BTS3900E GSM
Installation Guide
Issue: 01 Date: 2011-09-15 HUAWEI TECHNOLOGIES CO., LTD.
Contents Safety Information ………………………………………………………………… 2 Installation Tools…………………………………………………………………… 3 Installation Instruction……………………………………………………………… 4 Installation Procedure for the DC BTS3900E …………………………………… 4 Space Requirements for the DC BTS3900E …………………………………… 5 Installation Modes for the DC BTS3900E ……………………………………… 9 Installation Components ………………………………………………………… 12 Installing the DC BTS3900E on a Wall ………………………………………… 13 Installing the DC BTS3900E on a Pole ………………………………………… 15 Installing the DC BTS3900E on an Angle Steel …………………………………20 Installing the DC BTS3900E on a U-Steel ……………………………………… 20 Installing the DC BTS3900E on a L-Shaped Stand …………………………… 21 Hoisting the DC BTS3900E and Mounting Brackets onto a tower……………... 25 Installing the DC BTS3900E Cables …………………………………………… 27 Mounting and Grounding Requirements of the DC BTS3900E ……………… 34 Installing the Cables Between the APM30 and BTS3900E …………………… 36 Installing the Cables Between the APM30H(Ver.B) and BTS3900E ………… 37 Installing the Cables Between the PS4890 and BTS3900E ……………………38 Installing the Cables Between the EMU and the BTS3900E ………………… 39 Installing the Cables Between the Power2000 and the BTS3900E … … … …40 Installing transmission cables in the public network……………………………... 41 Space Requirements for the AC BTS3900E ………………………… …………42 Installation Modes for the AC BTS3900E …………………………………………42 Installing AC BTS3900E Cables ………………………………………………… 43 Dimensions and Installation Clearance Requirements of an AC Surge Protection Box……………………………………………………………………. 47 Installation Options of an AC Surge Protection Box…………………………… 48 Installing the AC Surge Protection Box (on a pole) …………………………… 49 Installing the Integrated Antennas of the BTS3900E……………………………52 Powering on the BTS3900E……………………………………………………… 54 Appendix…………………………………………………………………………… 55
1
Copyright © Huawei Technologies Co., Ltd. 2011. All rights reserved.
Safety Information Following All Safety Precautions Before any operation, read the instructions and precautions in this document carefully to minimize the possibility of accidents. The Danger, Caution, and Note items in the documents do not cover all the safety precautions that must be followed. They only provide the generic safety precautions for operations. When operating Huawei products and equipment, you must comply with safety precautions and special safety instructions related to corresponding equipment provided by Huawei. The safety precautions in the document are related to only Huawei products. Huawei is not liable for any consequence that results from the violation of universal regulations for safety operations and safety codes on design, production, and equipment use.
Complying with the Local Safety Regulations When operating the device, comply with the local safety regulations. The safety precautions provided in the documents are supplementary. You must comply with the local safety regulations.
Qualified Personnel Only The personnel in charge of installation and maintenance must be trained and master the correct operating methods and safety precautions before beginning work.
Symbols DANGER
Indicates a hazard with a high level of risk, which if not avoided, will result in death or serious injury.
WARNING
Indicates a hazard with a medium or low level of risk, which if not avoided, could result in minor or moderate injury.
CAUTION
Indicates a potentially hazardous situation, which if not avoided, could result in equipment damage, data loss, performance degradation, or unexpected results.
TIP
Indicates a tip that may help you solve a problem or save time.
NOTE
Provides additional information to emphasize or supplement important points of the main text.
Safety of Personnel • The high voltage power supply provides power for running the system. Direct contact with the high voltage power supply or contact through damp objects may result in fatal danger. • Non-standard and improper high voltage operations may result in fire and electric shock. • In a thunderstorm, do not perform operations on high voltage and AC power supply facilities or on a steel tower and mast. • Ground the device before powering on the device. Otherwise, the personnel and device are in danger. • Power off the device before performing operations on the power supply equipment. • High power radio-frequency signals are harmful to human body. Before installing or maintaining an antenna on a steel tower or mast with a large number of transmitter antennas, the operator should coordinate with all parties to ensure that the transmitter antennas are shut down. • When handling optical fibers, do not stand close to, or look into the optical fiber outlet with unaided eyes. • Protect yourself when drilling holes. Flying dust may hurt your eyes or you may inhale the dust. • Power off the batteries before connecting the cables to the batteries. Otherwise, casualties may occur. • When working at a height, be cautious about falling objects.
Device Safety • Check the electrical connection of the device before operation and ensure that the device is reliably grounded. • The static electricity generated by the human body may damage the electrostatic sensitive components on the circuit board, such as the large-scale integrated circuit (LIC). Wear an ESD wrist strap or ESD gloves when performing the operation. • When working on batteries, take measures to prevent short circuits in the batteries and electrolyte spill/loss. The electrolyte may erode metal and boards, or even cause rust of the equipment or short circuits in the boards. • When the equipment is unpacked, it must be powered on in 24 hours. The maximum duration of the poweroff state of the equipment is 24 hours during maintenance.
2
Installation Tools
Marking pen
Phillips screwdriver (M2 to M6)
Flat-head screwdriver (M2 to M6)
Wrench (with the diameter of at least 32 mm)
Crimping pliers for power cables
Torque screwdriver (14 kgf·cm)
Percussion drill (Ø14)
Knife
Rubber mallet
Cleaner
Wire cutter for power cables
Inner hexagon wrench
Heat gun
Wire stripper
Level bar
Combination wrench
Multimeter
Long measuring tape
3
(21mm to 21mm) for pole installation (17mm to17mm) for wall installation
Installation Instruction BTS3900Es are classified into DC and AC BTS3900Es. The procedure for installing DC and AC BTS3900Es are provided in this document.
• The RF port at the bottom of the BTS3900E does not have load capacity. Do not place the BTS3900E on the ground on its bottom during installation. • When you perform this operation, you need to place the foam pads or paper under the BTS3900E to avoid any damage to the shell.
准备说明 Installation Procedure for the DC BTS3900E
Start
Prepare for the installation
Install the BTS3900E on a wall
Install the BTS3900E on a pole
Install the BTS3900E on an angle steel
Install BTS3900E cables
Power on the BTS3900E
End
4
Install the BTS3900E on a U-steel
Install the BTS3900E on a L-shaped stand
Space Requirements for the DC BTS3900E a
Dimensions of a Single DC BTS3900E 268mm
130mm
485mm
b
c
Recommended Clearance for a Single DC BTS3900E
Minimum Clearance for a single DC BTS3900E 200mm
≥300mm
300mm
≥500mm
d
Minimum Installation Clearance for a Single DC BTS3900E Installed on a Tower 200mm 400mm
280mm
300mm
5
280mm
Space Requirements for the DC BTS3900E e
Recommended Clearance for Multiple DC BTS3900Es Installed on a Wall in Standard Mode
f
Minimum Clearance for Multiple DC BTS3900Es Installed on a Wall in Standard Mode
g
Recommended Clearance for Multiple DC BTS3900Es Side-Mounted on a Wall
6
Space Requirements for the DC BTS3900E h
Recommended Horizontal Spacing Between DC BTS3900Es
i
Minimum Horizontal Spacing Between DC BTS3900Es
j
Recommended Vertical Spacing Between DC BTS3900Es
k
Minimum Vertical Spacing Between DC BTS3900Es
7
Space Requirements for the DC BTS3900E l
Recommended Clearance for Multiple Centralized DC BTS3900Es on a Pole ≥300mm
≥500mm
m
Minimum Clearance for Multiple Centralized DC BTS3900Es on a Pole 200mm
300mm
8
Installation Modes for the DC BTS3900E
a
Installing the BTS3900E on a Wall
On a wall
b
When BTS3900Es are installed on a wall, the specifications of the wall are as follows: • The wall is able to bear weight four times that of the BTS3900E. The weight of a DC BTS3900E is 13.5kg. The weight of an AC BTS3900E is 17kg. • When the BTS3900E is installed on the wall, the fastening torque of the expansion bolt should be 30N•m. Ensure that the expansion bolt are properly tightened and there is no crack on the wall. •The brackets cannot be combined when BTS3900Es are installed on a wall, as shown in the figure on the right.
Installing the BTS3900E on a Pole
• A maximum of two BTS3900Es can be installed on a pole with the diameter of 60mm to 76mm. • When more than two BTS3900Es are installed on a pole in centralized mode, the diameter of the pole must range from 76mm to 114mm.
On a pole
Diameter of a pole
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Installation Modes for the DC BTS3900E
c
Installing the BTS3900E on an angle steel
BTS3900E
Angle steel
On an angle steel
d
Diameter of an angle steel
≤10°
•It is recommended that only one BTS3900E be installed on angle steel. •The vertical deviation angle of angle steel must be less than or equal to 10 degrees, as shown in the preceding figure.
Installing the BTS3900E on a U-steel
BTS3900E
U-steel
On a U-steel
Diameter of a U-steel
10
≤10°
•It is recommended that only one BTS3900E be installed on U-steel. •The vertical deviation angle of U-steel must be less than or equal to 10 degrees, as shown in the preceding figure.
Installation Modes for the DC BTS3900E
e
Installing the BTS3900E on a L-shaped stand
•In the scenario where a cable rack is more than 2 m above the floor (hereinafter referred to as the height-unrestricted scenario), the BTS3900Es are installed on beam 1 and beam 3 by default. •In the scenario where a cable rack is 1.8 m to 2 m above the floor (hereinafter referred to as the height-restricted scenario), the BTS3900Es are installed on beam 2 and beam 4 by default. •If the BTS3900E needs to be installed on the L-shaped stand, only the main bracket is required. •BTS3900E can be installed on an L-shaped stand in standard installation mode, reverse installation mode, or side installation mode.
On a L-shaped stand
Height-unrestricted scenario Cable rack
Cable rack
Height-restricted scenario
Beam 1 Beam 2
Beam 3 Beam 4
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Installation Components a
The front and rear view of a BTS3900E Cover plate
b
Brackets for Installing the BTS3900E
Attachment plate
Hoist clamp on the main mounting bracket
Main mounting bracket
Front view
Rear view
Dual-nut bolt assembly
Auxiliary mounting bracket
Expansion bolt
•The brackets are used for installing the BTS3900E on a pole, wall, angle steel, or U-steel. •When installing the main mounting bracket, ensure that the contact piece on the bracket is securely fixed.
To protect the RF ports on the bottom of the BTS3900E, remove the dustfree caps when installing RF cables.
12
Installing the DC BTS3900E on a Wall a
Place the auxiliary mounting bracket on the wall at the installation position, adjust the levelness of the bracket, and then mark the anchor points by using a marking pen.
It is recommended that the bottom of the auxiliary mounting bracket is 1200mm to 1600mm above the ground.
b
Drill holes at the anchor points and install the expansion assemblies. Bolt M10x65 Spring washer 10 Plastic tube Flat washer 10 Expansion tube
20~30mm
•⑤⑥After the expansion bolt is removed, dispose of the plastic tube. •⑦Do not hammer the bolt into the expansion tube completely and leave20 mm to 30mm of the bolt outside the wall.
13
Installing the DC BTS3900E on a Wall c
Fix the auxiliary mounting bracket on the wall securely.
d
Install the main mounting bracket.
•Fix the auxiliary mounting bracket on the expansion bolts and then tighten the bolts by using a combination wrench (17mm-17mm). • The auxiliary mounting bracket must be installed between the flat washer of the expansion bolt and the wall.
e
Install the BTS3900E on the main mounting bracket until the BTS3900E snaps shut. ≤2°
BTS3900E
Wall
•Choose standard or reverse installation mode according to site survey. This figure is based on the standard installation mode. •When the BTS3900E is installed on the wall, ensure that the angle between the BTS3900E and the wall is less than 2 degrees as shown in the preceding figure.
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Installing the DC BTS3900E on a Pole (a single BTS3900E) a
b
Install the main mounting bracket. Then, install the auxiliary mounting bracket between the nuts of the dual-nut bolt assembly on the main mounting bracket.
Use an adjustable wrench to tighten the nut by the fastening torque 40N•m. In this way, the main and auxiliary mounting brackets are secured on the pole.
c
Install the BTS3900E on the main mounting bracket until the BTS3900E snaps shut.
40N•m
Tighten the two dual-nut bolt assemblies alternatively. After the brackets are secured properly, measure the spacing between the main and auxiliary mounting brackets on both sides and ensure that the spacing is the same on the two sides.
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Installing the DC BTS3900E on a Pole (two BTS3900Es) a
Install the first BTS3900E. For details, see page 15.
b
Install the other main mounting bracket on the auxiliary mounting bracket to secure the second BTS3900E.
c
Reinstall the attachment plate on the back and cover plate on the front of the second BTS3900E to interchange their positions.
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Installing the DC BTS3900E on a Pole (two BTS3900Es) d
Mount the second BTS3900E on the main mounting bracket.
When you install two BTS3900Es in back-to-back mode, ensure that the cabling cavities of these two BTS3900Es face the same direction. Reverse installation Standard installation
17
Installing the DC BTS3900E on a Pole (multiple BTS3900Es) a
Reinstall the attachment plate on the back and cover plate on the side of a BTS3900E to interchange their positions.
b
Mount the BTS3900E on the main mounting bracket.
c
side installation
18
Install the main mounting bracket of the second BTS3900E.
Installing the DC BTS3900E on a Pole (multiple BTS3900Es) d
Mount the second BTS3900E on the main mounting bracket.
e
Install the main mounting bracket of the third BTS3900E, and mount the third BTS3900E on the main mounting bracket.
The layout of three BTS3900Es installed on a pole must be symmetrical.
19
Installing the DC BTS3900E on an Angle Steel Plan view
Angle steel
• The procedure for installing the BTS3900E on an angle steel is the same as that on a pole. •When the BTS3900E is installed on an angle steel, the main mounting bracket and auxiliary mounting bracket can be installed on only the position as shown in the preceding figure.
Installing the DC BTS3900E on a U-Steel Plan view
U-steel
• The procedure for installing the BTS3900E on a U- steel is the same as that on a pole. • When the BTS3900E is installed on a U-steel, the main mounting bracket and auxiliary mounting bracket can be installed on only plane A, B, C, or D, as shown in the preceding figure.
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Installing the DC BTS3900E on a L-shaped stand (Height-unrestricted scenario)
a
Install the main mounting bracket. Label
Spring washer Rubber washer
If the BTS3900E needs to be installed on the L-shaped stand, only the main mounting bracket is required.
b
Link the M6 OT terminal at one end of the PGND cable to the wiring terminal at the bottom of the BTS3900E, and leave the other end idle.
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Installing the DC BTS3900E on a L-shaped stand (Height-unrestricted scenario)
c
Install the BTS3900E on the main mounting bracket.
22
Installing the DC BTS3900E on a L-shaped stand (Height-restricted scenario)
a
Install the main mounting bracket. Label
Spring washer Rubber washer
Before installing the main bracket in the height-restricted scenario, you must use a finger to push the rubber cap out.
b
Link the M6 OT terminal at one end of the PGND cable to the wiring terminal at the bottom of the BTS3900E, and leave the other end idle.
23
Installing the DC BTS3900E on a L-shaped stand (Height-unrestricted scenario)
c
Install the BTS3900E on the main mounting bracket.
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Hoisting the DC BTS3900E and Mounting Brackets onto a tower • The DC BTS3900E support installation on a tower, whereas the AC BTS3900E does not support installation on a tower. •Before installing a BTS3900E on a tower, bind the BTS3900E and mounting brackets and then hoist them onto the tower. The BTS3900E can be installed on a pole, angle steel, or U-steel. •When installed on a tower, only one BTS3900E can be installed in standard mode or reverse mode. Two BTS3900Es cannot be installed on the side or on a pole in back-to-back mode, and the brackets for more than two BTS3900Es cannot be combined.
a
Bind the BTS3900E and mounting brackets properly using a lifting sling.
•The cross-sectional area of the lifting sling and traction sling is around 20 mm, not more than 25 mm. In addition, the slings can bear the weight four times more than that of the BTS3900E. •When hoisting the BTS3900E and mounting brackets up to the tower, prevent the BTS3900E from colliding with the tower. •When hoisting the BTS3900E up to the tower, bind the E1 cable, FE cable, and alarm cable with outdoor black anti-ultraviolet cable ties.
b
Bind the BTS3900E by leading the lifting sling along the bottom of the attachment plate and through the BTS3900E handle. Then, bind mounting brackets to the lifting sling and bind the BTS3900E handle to the traction sling.
Lifting sling
•Do not hoist the BTS3900E by the handle only, as shown in the figure on the left. • Hoist the BTS3900E to the tower before it is installed on the pole, angle steel, or U-steel. Traction sling
25
Hoisting the DC BTS3900E and Mounting Brackets onto a tower c
Hoist the BTS3900E and mounting brackets onto the tower.
Fixed pulley
Lifting sling
1.Installers A climb onto the tower. Then, installer A fixes the pulley to the support of the tower platform and leads the lifting sling through the fixed pulley. 2.Installer C uses a lifting sling to bind the BTS3900E and mounting brackets as shown in the preceding figure and then tie a knot in the traction sling at the handle of the BTS3900E. 3.Installer B pulls the lifting sling, and at the same time, installer C pulls the traction sling away from the tower to prevent the BTS3900E and mounting brackets from colliding with the tower. 4.Installers A hold the BTS3900E and mounting brackets and untie the slings.
Traction sling
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Installing the DC BTS3900E Cables a
Cable Connections of a Single DC BTS3900E Antenna
Cable Connections of a DC BTS3900E (a) Alarm cable
(b) Ethernet cable
(c) DC
(for transmission)
power cable
(d) Ethernet cable (for maintenance)
(e) RF jumper
(f) Feeder
(g) PGND cable
(h)E1 cable
(i) USB
d i
f
Maintenance PC USB
Sequence of Installing the Cables Start
e Install the PGND cable
h c b
g a
External power system
External device
Transmission device
Install the RF jumper (interconnect jumper is optional)
RET/TST Install the power cable
E1/T1
MON
Install the transport cable Install the alarm cable(optional)
End
Bottom
•When installing the power cable, you must insulate the bare wires and screwdriver if the power cable must be led through the power cabinet of the operator. This prevents short circuit caused by the contact of the bare wire or screwdriver and other equipment. • When opening cabling cavity, do not impose pressure on the cover of the cabling cavity.
27
Installing the DC BTS3900E Cables
b
Cable Connections of Combined DC BTS3900Es
(b) Signal cable for
Antenna
(a) RF jumper
Antenna
Cable Connections of Combined DC BTS3900Es
Extension Cabinet
combined DC BTS3900E (c) DC power cable
(d) PGND cable
(e) PGND cable for cascaded BTS3900Es
•When the BTS3900E uses DC power supply, it supports the cascading power supply mode. A maximum of three BTS3900Es can be cascaded in the chain topology. •When installing the signal cables for combined cabinets, ensure that port SFP0 of the main cabinet is connected to port SFP0 of the extension cabinet, or port SFP1 of the main cabinet of is connected to port SFP0 of the extension cabinet. • Port SFP0 of the main cabinet is preferentially used.
a
d c
External power system
28
b
e
Main Cabinet
Installing the DC BTS3900E Cables c
View of the DC BTS3900E Cables
• Press the strap on the exposed shielding layer of the power cable tightly. The OT terminal is pressed under the copper bar. Ensure that the lower edge of the exposed shielding layer does not exceed the position shown in the figure on the right. • The shielding layer of the other end of the power cable should be grounded. • To avoid sharp bending, the optical cable must be pressed by the strap next to the power cable during the optical cable installation.
•Wrap the joint of the RF jumper with the waterproof tape and then with PVC insulating. The tape is wrapped spirally upwards, downwards, and then upwards again in three layers. For every two adjacent tape layers, the tape on the upper layer overlaps about half the width of the tape on the lower layer. • When removing the SFP high-speed cable, you need to gently pull or push the puller according to the terminal type.
Shielding layer of the power cable
Power cable
RF jumper
Waterproof tape
PVC insulating tape
29
Installing the DC BTS3900E Cables d
List of Cables
Cable
Connector Type
PGND cable (PGND cable between cascaded BTS3900Es)
OT terminal OT terminal
Connected to Grounding screw at the bottom of the BTS3900E PGND cable: Wiring post on the protection grounding bar. PGND cable between cascaded BTS3900Es: Grounding bolt at the bottom of another cascaded BTS3900E.
DIN male connector
ANTA_TX/RX port or ANTB_RX port at the bottom of the
BTS3900E
Antenna jumper
DIN male connector
Feeder or antenna
North American standard : OT terminal for the blue wire DC power cable
Two OT terminals
to NEG (-)0 port in the cabling cavity of the BTS3900E and OT terminal for the black wire to the RTN (+)0 port European standard: OT terminal for the blue wire to NEG
(-)0 port in the cabling cavity of the BTS3900E and OT terminal for the brown wire to the RTN (+)0 port Bar wires
DC power cable for cascaded
OT terminal
Wiring post on the external power system
North American standard: connect the OT terminal of the blue cable to the NEG (-)1 port and the OT terminal of the black cable to the RTN (+)1 port on the cabling cavity of the upper-level BTS3900E
modules
European standard: connect the OT terminal of the blue cable to the NEG (-)1 port and the OT terminal of the black cable to the RTN (+)1 port on the cabling cavity of the upper-level BTS3900E OT terminal
North American standard: connect the OT terminal of the blue cable to the NEG0(-) port and the OT terminal of the black cable to the RTN0(+) port on the cabling cavity of the lower-level BTS3900E North American standard: connect the OT terminal of the blue cable to the NEG0(-) port and the OT terminal of the
black cable to the RTN0(+) port on the cabling cavity of the lower-level BTS3900E
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Installing the DC BTS3900E Cables d
List of Cables
Cable
Inter-BTS3900E signal cable
Connected to
Connector Type
Connect the connectors labeled with 1A and 1B to port
CPRI Optical Cable: DLC connector
SFP0 or port SFP1 in the cabling cavity of the main cabinet Connect the connectors labeled with 2A and 2B to port
SFP0 in the cabling cavity of the extension cabinet
SFP High Speed Signal Cable: SFP200 male
connector
SFP0 or SFP1 port in the cabling cavity of the main cabinet SFP0 port in the cabling cavity of the extension cabinet
（CPRI Optical Cable）
（SFP High Speed Signal Cable） DB9 female connector
E1/T1 port on the BTS3900E
Bar wires
Corresponding auxiliary devices
DB15 male connector
MON port at the bottom of the BTS3900E
Bar wires
Alarm signal port on the external device
E1 cable (75 ohm/120 ohm)
Alarm cable
RJ-45 connector
Ethernet cable
Transmission: FE port in the cabling cavity of the BTS3900E Maintenance: ETH port in the cabling cavity of the BTS3900E
PoE power supply: FE port in the cabling cavity of the BTS3900E Transmission: port on the corresponding transmission device RJ-45 connector
Maintenance: Ethernet port on the PC where the SMT is installed PoE power supply: microwave transmission device
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Installing the DC BTS3900E Cables e
Introduction to the cabling cavity Cable trough for power cables
Cabling cavity Cover plate of the cabling cavity Label for making power cables Waterproof filler
Opening the cover plate
f of the cabling cavity
• Make power cables by referring to the label on the cover plate of the cabling cavity. For details, see page 56 and 56. •After the cables are installed, the waterproof filler should be installed in the unused cable trough. •The installation method of the cabling cavity of the AC BTS3900E and the settings of DIP switches on the AC BTS3900E are similar to those of the DC BTS3900E.
g Closing the cover plate of the cabling cavity
•The screws on the cover plate are tightened in the order shown in the preceding figure. •Take proper ESD protection measures, for example, wear ESD gloves, to prevent electrostatic damage to the boards, modules, or electronic components.
32
安装线缆 Installing the DC BTS3900E Cables
h
Setting DIP Switches
•When a 75-ohm cable is used for the BTS3900E, the RX end is not grounded by default. •Bits 1 and 2 are used to specify whether the BTS3900E is a basic module or an extension module and the transmission mode. •When bits 1 and 2 are set to ON, bits 3 and 4 can be used to specify the grounding state of the 75-ohm E1 transmission.
Settings of DIP switches on the BTS3900E Switch Status 1
2
ON
ON
OFF ON
OFF
ON OFF
OFF
Description
Switch
Status
Description
3
ON
Channel 2 of 75-ohm E1, RX end grounded
OFF
Channel 2 of 75-ohm E1， RX end not grounded
ON
Channel 1 of 75-ohm E1， RX end grounded
OFF
Channel 1 of 75-ohm E1， RX end not grounded
Main cabinet, 75-ohm E1 mode Main cabinet, 120-ohm E1 mode
4
Main cabinet, T1 mode
Extension cabinet mode
33
Mounting and Grounding Requirements of the DC BTS3900E
a
Tower Mounting 1. Requirements of BTS3900E Installation and Port Surge Protection • The BTS3900E and its auxiliary devices must be installed within the 45ºprotection angle of the lightning rod. • The BTS3900E must be grounded to the nearest grounding point on the tower (within 1m from where the BTS3900E is installed). • None of the external ports of the BTS3900E require external surge protection units. • The BTS3900E and its transmission and power supply devices must be connected to the same grounding system and share the grounding grid of the site.
2. Recommendations for Transmission Device Protection If Huawei does not provide the transmission devices, the interconnection ports of the transmission devices should meet the following requirements: • The surge protection level of the FE port should be greater than or equal to 7.5kA (8/20us) in all-to-ground common mode. Otherwise, a surge protection unit should be installed near the FE port. • The surge protection level of the E1 port should be greater than or equal to 3kA in pair-to-ground differential mode or 5kA in pair-to-ground common mode. Otherwise, a surge protection unit should be installed near the E1 port.
3. Grounding points description Point 1: within 1m of where the BTS3900E is installed Point 2: within 1m of the bend in the cable leading away from the tower Point 3: over the grounding bar in front of the feeder window Point 4: at the inlet of an outdoor cabinet or inside the cabinet
4. Grounding Requirements of External Cables •The shielding layer of a DC cable must be grounded properly to the maintenance cavity of the BTS3900E. Therefore, external grounding is not required on the tower. •The shielding layers of the E1 cable and alarm cable are grounded on the BTS side with connectors. Therefore, grounding clips are not required on the tower. • If cable clips, cable ties, or pig tail clips are used to ground the cables on the power supply device and transmission devic e side, grounding clips are not required.
FE cable
DC power cable
E1 cable and alarm
Grounding Point (Power Supply
Grounding Point (Power Supply
Device and Transmission Device
Device and Transmission Device
Located in the Equipment Room)
Sharing an Outdoor Cabinet)
Description
• At points 1 and 2, use grounding clips to ground
Points 1 and 3
Points 1 and 4
Point 2 (The distance between the equipment room and the tower is
Point 2 (The distance between the cabinet and the tower is more than
more than 10m.)
10 m.)
Point 3
Point 4
Point 2 (The distance between the equipment room and the tower is
Point 2 (The distance between the cabinet and the tower is more than
more than 10m.)
10 m.)
Point 3
Point 4
the shielding layer of a cable by connecting the PGND cable to the nearest grounding bar of the tower. • At point 3, use grounding clips to ground the shielding layer of a cable by connecting the PGND cable to the nearest grounding bar of the feeder window. • At point 4, use grounding clips to ground the shielding layer of a cable by connecting the PGND
cable to the nearest grounding bar of the cabinet. • For details about how to install grounding clips, see page 64.
cable
34
Mounting and Grounding Requirements of the DC BTS3900E
b
Rooftop Mounting 1. Requirements of BTS3900E Installation and Port Surge Protection • The BTS3900E and its auxiliary devices must be installed within the 45º protection angle of the lightning rod. • The BTS3900E must be grounded to the nearest metal pole or rooftop surge protection belt (within 1m from where the BTS3900E is installed). • None of the external ports of the BTS3900E require external surge protection units. • The BTS3900E and its auxiliary devices are installed on the same rooftop. • External cables must be routed in lightning-free areas and cannot be short-circuited to the surge protection belt on the rooftop or to the external conductors on the building.
2. Recommendations for Transmission Device Protection If Huawei does not provide the transmission devices, the interconnection ports of the transmission devices should meet the following requirements: • The surge protection level of the FE port should be greater than or equal to 7.5kA (8/20us) in all-to-ground common mode. Otherwise, a surge protection unit should be installed near the FE port. • The surge protection level of the E1 port should be greater than or equal to 3kA in pair-to-ground differential mode or 5kA in pair-to-ground common mode. Otherwise, a surge protection unit should be installed near the E1 port.
3. Grounding points description •Point 1: within 1m of where the BTS3900E is installed •Point 3: over the grounding bar in front of the feeder window •Point 4: at the inlet of an outdoor cabinet or inside the cabinet •Point 5: on the roof edge within 1m of the bend of the cable ladder
4. Grounding Requirements of External Cables •The shielding layer of a DC cable must be grounded properly to the maintenance cavity of the BTS3900E. Therefore, external grounding is not required on the rooftop. • The shielding layers of the E1 cable and alarm cable are grounded on the BTS side with connectors. Therefore, grounding clips are not required on the rooftop. • Insulating tapes or L-shaped plastic pipes must be used to protect cables from damage. • If cable clips, cable ties, or pig tail clips are used to ground the cables on the power supply device and transmission devic e side, grounding clips are not required.
FE cable
Grounding Point (Power Supply Device and
Grounding Point (Power Supply Device and
Transmission Device Located in the Equipment Room)
Transmission Device Sharing an Outdoor Cabinet on the Rooftop)
Points 1 and 3
Points 1 and 4
Point 5 (The length of the cable
-
• At points 1 and 5, use grounding clips to ground the
shielding layer of a cable by connecting the PGND cable to the nearest surge protection belt on the rooftop.
routed horizontally on the
• At point 3, use grounding clips to ground the shielding
rooftop is more than 20m.) DC power cable, E1 cable, and alarm cable
Description
Point 3
Point 4
Point 5 (The length of the cable routed horizontally on the
-
layer of a cable by connecting the PGND cable to the nearest grounding bar of the feeder window. • At point 4, use grounding clips to ground the shielding layer of a cable by connecting the PGND cable to the nearest grounding bar of the cabinet.
rooftop is more than 20m.)
• For details about how to install grounding clips, see page 64.
35
Installing the Cables Between the APM30 and BTS3900E Shielding layer for the power cable (25mm)
APMI USLP2 PDU
Strip the jacket of the power cable for a small part, press the exposed shielding layer on the strap, and then connect the PGND cable on the strap to the nearest grounding bolt on the side in the APM30.
Power cable Alarm cable
Power Alarm cable cable
36
The power cable is connected to one of the LOAD4 to LOAD9 terminals of the PDU.
Installing the Cables Between the APM30H (Ver.B) and BTS3900E
COM_IN
EPS LOAD8～13
Alarm Power cable cable
•Add RJ-45 connectors to the four wires labeled PSU485 TX-, PSU485 TX+, PSU485 RX-, and PSU485 TXof the alarm cable and cut off other wires. Then, link the RJ-45 connectors to the COM_IN port on the HEUA or on the CMUA. •Strip the jacket of the power cable for a small part, press the exposed shielding layer on the strap. For details, see page 36.
37
Installing the Cables Between the PS4890 and BTS3900E a
PS4890 ＋BTS3900E BTS3900E
Power Cable Alarm cable
LOAD0
PMU
Shielding layer for the power cable
b
PS4890 ＋ USLP2 Board＋ BTS3900E BTS3900E Power cable Alarm cable
PMU
LOAD0
USLP2
Shielding layer for the power cable
38
Installing the Cables Between the EMU and the BTS3900E Pin on the DB15 Connector X1.11
X1.12 X1.13 X1.14
BTS3900E alarm cable
Wire Type Wire Color
Twisted pair cable Twisted pair cable
Signal Type
Red
TX-
Blue
TX+
Red
RX-
Orange
RX+
Pin on the DB9 Connector
Wire Type
Wire Color
Signal Type
X1.7
Twisted pair cable
Orange
TX-
White and orange
TX+
Twisted pair White and cable blue
RX-
X1.2 DB15 connector
X1.6 DDF
X1.1
Blue
RX+
EMU alarm cable
DB9 connector For the description of the pin on the DB15 connector, see page 55.
39
Installing the Cables Between the Power2000 and the BTS3900E
Ensure that all the MCBs are set to OFF before the cable connection.
Dry contact Power cable
Alarm cable
•The four wires of the BTS3900E alarm cable marked with PSU 485 are connected to the J18 port according to the cable sequence in the preceding figure. •The signal cables of the BTS3900E alarm cable marked with SWITCH and GND can be connected to the door status monitoring cable or other dry contact alarm cables through interconnection terminals. •The interconnection terminals are placed in Power 2000.
40
Installing transmission cables in the public network a
Indoor Installation of the BTS3900E
•In the public network transmission scenario, the connection between the AC-powered BTS3900E and the Eudemon 200E-C and that between the DC-powered BTS3900E and the Eudemon 200E-C are the same. •Connect the FE signal cable that is led out from the FE port on the cabling cavity panel of the BTS3900E to the port on the electric interface card of the Eudemon 200E-C.
Eudemon 200E-C
b
Outdoor Installation of the BTS3900E
Eudemon 200E-C
•Connect the FE signal cable that is led out from the FE port on the cabling cavity panel of the BTS3900E to the INSIDE FE0 port of the UFLP on the SLPU, and then connect the FE signal cable that is led out from the OUTSIDE FE0 port on the UFLP to the port on the 1FE electric interface card of the Eudemon 200E-C. •The FE signal cables on the BTS3900E side and the SLPU side are grounded through grounding clips. The length of the FE cables between the BTS3900E and the grounding clips and that between the SLPU and the grounding clips is within 1m. •For details about how to install the Grounding Clip, see page 64.
41
Space Requirements for the AC BTS3900E a
Dimensions of a Single AC BTS3900E 370mm
130mm
485mm
•The space requirements for the AC BTS3900E is the same as that of the DC BTS3900E.
Installation Modes for the AC BTS3900E •The installation scenarios and modes of the AC BTS3900E are the same as those of the DC BTS3900E. For details, see pages 9 to 24. •The AC BTS3900E does not support installation on a tower.
42
Installing the AC BTS3900E Cables a
Cable Connections of a Single AC BTS3900E Antenna
Cable Connections of a AC BTS3900E (a) Alarm cable
(b) Ethernet cable
(c) AC
(for transmission)
power cable
(d) Ethernet cable (for maintenance)
(e) RF jumper
(f) Feeder
(g) PGND cable
(h)E1 cable
(i) USB Maintenance PC
d i
f
USB
Sequence of Installing the Cables Start
g
e Install the PGND cable
Alarm device
Install the RF jumper (interconnect jumper is optional)
a
b
h
c
Transmission device
Install the power cable
RET/TST E1/T1 MON
Surge protection box
External power system
Port for AC power input
Install the transmission cable Install the alarm cable(optional)
End RF port
Bottom
•When installing the power cable, you must insulate the bare wires and screwdriver if the power cable must be led through the power cabinet of the operator. This prevents short circuit caused by the contact of the bare wire or screwdriver and other equipment. • When opening maintenance cavity, do not impose pressure on the cover of the maintenance cavity.
43
Installing the AC BTS3900E Cables
b
Cable Connections of Combined AC BTS3900Es
(c) AC power cable
(d) PGND cable
Antenna
(b) Inter-BTS3900E signal cable
Antenna
(a) RF jumper
Extension Cabinet
Main Cabinet
(e) Equipotential cable
The combined AC BTS3900Es do not support cascading through power cables.
d
a b
When the BTS3900E is installed outdoors, the surge protection box for AC power is required.
e
c
Surge protection box
External power system
c
View of the AC BTS3900E Cables
•The two antenna ports and AC input power port on the AC BTS3900E must be wrapped with waterproof tape and PVC insulating tape. For details, see page 29. •AC power cables use aeronautical connectors. When connecting AC power cables, you must warp them with PVC corrugated tubes and waterproof tapes.
RF jumper Waterproof/PVC insulating tape
Corrugated pipe
44
Power cable
Installing AC BTS3900E Cables d
List of Cables
Cable
Connector Type
Connected to
PGND cable (PGND
OT terminal
Grounding screw at the bottom of the BTS3900E
cable between cascaded BTS3900Es)
OT terminal
PGND cable: Wiring post on the protection grounding bar.
PGND cable between cascaded BTS3900Es: Grounding bolt at the bottom of another cascaded BTS3900E.
Equipotential cable (outdoor AC BTS3900E)
OT terminal
Grounding screw at the bottom of the BTS3900E
OT terminal
Grounding bar on the surge protection box
DIN male connector
ANTA_TX/RX port or ANTB_RX port on the BTS3900E
DIN male connector
Feeder or antenna
3-pin round connector
PWR port at the bottom of the BTS3900E
OT terminal
AC surge protection box
Antenna jumper
AC power cable (outdoor AC BTS3900E）
45
Installing AC BTS3900E Cables Cable
Connector Type
AC power cable
3-pin round connector PWR port at the bottom of the BTS3900E
（indoor AC BTS3900E)
Bar wires
External power system
DB9 female connector
E1/T1 port on the BTS3900E
Bar wires
Corresponding auxiliary devices
DB15 male connector
MON port at the bottom of the BTS3900E
Bar wires
Alarm signal port on the external device
RJ-45 connector
Transmission: FE port in the cabling cavity of the BTS3900E Maintenance: ETH port in the cabling cavity of the BTS3900E
E1 cable (75 ohm/120 ohm)
Alarm cable
Connected to
PoE power supply: the FE port in the cabling cavity of the BTS3900E
Ethernet cable
RJ-45 connector
Transmission: port on the corresponding transmission device Maintenance: Ethernet port on the PC where the SMT is installed PoE power supply: microwave transmission device
InterBTS3900E
CPRI Optical Cable :
Connect the connectors labeled with 1A and 1B to port SFP0
DLC connector
or port SFP1 in the cabling cavity of the main cabinet. Connect the connectors labeled with 2A and 2B to port SFP0 in the cabling cavity of the extension cabinet.
signal cable
SFP High Speed Signal SFP0 or SFP1 port in the cabling cavity of the main cabinet Cable: SFP200 male SFP0 port in the cabling cavity of the extension cabinet connector （ CPRI Optical Cable） （SFP High Speed Signal Cable）
46
Dimensions and Installation Clearance Requirements of an AC Surge Protection Box
b Recommended clearance for
a Dimensions of an AC
an AC surge protection box
surge protection box
c Minimum clearance for
an AC surge protection box
47
Installation Options of an AC Surge Protection Box a AC surge protection box
AC surge protection box
b installed on a wall
installed on a pole
•The procedure for installing an AC surge protection box on a wall is the same as that for installing a BTS3900E on a wall. For details, see Installing the DC BTS3900E on a Wall. •Following is the procedure for installing an AC surge protection box on a pole.
48
Installing the AC Surge Protection Box (on a pole) a
Install an AC surge protection box on a pole.
1.Loosen the screw on the clamp using an M4 Phillips screwdriver. 2. Lead the clamp through the gap between the rear cover plate and the case of the surge protection box. 3.Circle the clamp around the pole, and then tighten the screw on the clamp.
b
Loosen the screws on the AC surge protection box using the M4 phillips screwdriver and open the cover plate. Then, remove the thread-lock sealing nut from the PG connector of the surge protection box, and store waterproof blocks properly.
Do not use the removed thread-lock sealing nut of the PG connector with the thread-lock sealing nuts on other surge protection boxes.
49
Installing the AC Surge Protection Box (on a pole) c
Glide the thread-lock sealing nut and then the PG connector over the power cable. Connect power cables to the AC surge protection box.
1. Lead the power cable between the surge protection box and the external power device through the PG connector labeled IN. Connect the OT terminals of the blue, brown, and yellow/green core wires to the Lin, Nin, and GND ports on the surge protection box respectively. 2. Lead the power cable between the BTS3900E
and the AC surge protection box through the PG connector labeled OUT. Connect the OT terminals of the blue, brown, and yellow/green core wires to the Nout, Lout, and GND ports on the surge protection box respectively. 3.Tighten the thread-lock sealing nut, and then use a wrench to tighten the PG connector to ensure it is waterproofed properly.
Ensure that the insulation layer of each power cable is fastened using clips.
d
Close the cover plate of the surge protection box and tighten the screw to 1.4N·m using an M4 Phillips screwdriver.
50
Installing the AC Surge Protection Box (on a pole) e
Wrap waterproof tape and then PVC insulation tape around both ends of each power cable and connectors between corrugated pipes.
Corrugated pipes
f
Corrugated pipes
Install the PGND cable between the BTS3900E and the AC surge protection box.
PGND cable
Equipotential cable
51
Installing the Integrated Antennas of the BTS3900E a
Installing Directional Antennas
M6
3.0
M30
45N•m
52
ANTA_TX/RX
Installing the Integrated Antennas of the BTS3900E
b
Installing Omni-Directional Antennas
M6
M30
ANTA_TX/RX 45N•m
53
3.0
Powering on the BTS3900E Start
Power on the BTS3900E
Rectify the fault
Check whether the status of the RUN LED is 0.125s ON, 0.125s OFF and that of ALM LED is OFF?
No
Yes
When the BTS3900E is unpacked, it must be powered on within 24 hours. Each time the BTS3900E is maintained after being put into use, the power-off duration cannot exceed 24 hours.
End
54
Appendix a
Lifting the CPRI optical cable up to the tower
1. Cut off a 200mm long corrugated pipe with the
diameter of 25mm. 2. Lead the fiber tails labeled 1A and 1B of the optical cable into the corrugated pipe by 160mm. 3. Wrap the corrugated pipe and optical cable with the color tape. 4. For the tower made of steel pipes, tie the black jacket to the corrugated pipe at the position 150 mm away from the color tape, and then lift the optical cable up to the tower. 5. For the tower made of angle steel girders, carry the optical cable onto the tower when climbing up to the tower. 6. After the optical cable is lifted up to the tower, remove the color tape and corrugated pipe before installing the optical cable.
Corrugated pipe Color tape
b
Binding Waterproof Labels Attach waterproof labels to corresponding cables
Mapping of waterproof labels and cables
Silkscreen on the Waterproof Label
Cable
PWR
Power cable
SFP
Signal cable for combined BTS3900Es
ALM
Alarm cable
E1
E1 cable
FE
FE cable
ANTA
RF jumper
ANTB GND
The default position for attaching a waterproof label is 2cm away from the connector. In special scenarios, the label can be attached at another position to avoid a bend of a cable or a position where installation is difficult. Generally speaking, all the waterproof labels should be attached neatly and consistently.
PGND cable
Both ends of a cable near connectors should be attached with waterproof labels, and the silkscreen on the label should be in consistent with the corresponding cable. For details, see the preceding figure.
55
Appendix c
Making OT Terminals by Using a Wire Stripper (Recommended)
Add two OT terminals to the end of the power cable
-48V DC power cable
-48V DC power wire
OT terminals
GND wire Shielding layer
Determine lengths of power cables for different operations according to the scales on the inner side of the cover plate of the cabling cavity.
Based on the determined length, remove the jacket and shielding layer from the power cable.
Remove the jacket from each wire.
Add an OT terminal to each wire.
Strip a 15 mm jacket off the power cable to reveal the shielding layer of the power cable.
The assembling of OT terminals to the power cable must be complete before the BTS3900E is installed.
56
Appendix Making OT terminals at the input end of the power cable by using a knife
Do not damage the shielding layer of the power cable when cutting the jacket.
1
2
3
4
5
6
7
8
9
10
11
12
57
Appendix d
Pin Assignment for the Wires of the Alarm Cable DB15 Connector
Wire
Wire Color
X1.1
X2.1
White
X1.6
X2.2
Blue
X1.2
X2.3
White
X1.7
X2.4
Orange
X1.3
X2.5
White
X1.8
X2.6
Green
X1.4
X2.7
White
X1.9
X2.8
Brown
X1.11
X2.9
Red
X1.12
X2.10
Blue
X1.13
X2.11
Red
X1.14
X2.12
Orange
58
Wire Type Twisted pair
Label SWITCH_H1 GND
Twisted pair
SWITCH_H2 GND
Twisted pair
SWITCH_H3 GND
Twisted pair
SWITCH_H4 GND
Twisted pair
PSU485 TX-
PSU485 TX+ Twisted pair
PSU485 RXPSU485 RX+
Appendix e
Pin Assignment for E1 Cable 75-ohm E1 cable
Pin of the DB9 female connector
Wire type
Coaxial Series NO.
Signal
Description
X1.1
Tip
2
R0
-
X1.2
Ring
X1.3
Tip
X1.4
Ring
X1.6
Tip
X1.7
Ring
X1.8
Tip
X1.9
Ring
4
R1
-
1
T0
Start X1.Shell
3
T1
Start X1.Shell
120-ohm E1 cable Pin of the DB9 female connector
Color
Wire type
Signal
Label
X1.1
White
Twisted pair
R0
R0+
X1.2
Orange
X1.3
White
X1.4
Brown
X1.6
White
X1.7
Blue
X1.8
White
X1.9
Green
R0Twisted pair
R1
R1+ R1-
Twisted pair
T0
T0+
T0Twisted pair
T1
T1+ T1-
59
Appendix
f
General Cabling Requirements
1. The bending radius of the cables must meet the following specifications: •The bending radius of the 7/8'' feeder must be more than 250 mm (9.84 in.), and the bending radius of the 5/4'' feeder must be more than 380 mm (14.96 in.). •The bending radius of the 1/4'' jumper must be more than 35 mm (1.38 in.). The bending radius of the superflexible 1/2'' jumper must be more than 50 mm (1.97 in.), and the bending radius of the ordinary 1/2'' jumper must be more than 127 mm (5 in.). •The bending radius of the power cable or PGND cable must be at least five times the diameter of the cable. •The bending radius of the optical fiber must be at least 20 times the diameter of the optical fiber. •The bending radius of the E1/T1 cable must be at least five times the diameter of the cable. •The bending radius of the signal cable must be at least five times the diameter of the cable.
2. The cables must be bound as follows: •Different types of cables must be separately routed and cannot be entangled. •The cables must be bound tightly and neatly. The sheaths of the cables must not be damaged. •The cable ties must face the same direction, and those at the same horizontal line must be in a straight line. • Extra length of cable ties must be cut. •Labels or nameplates must be attached to the cables after they are installed.
3. The cables must be routed as follows: •Different types of cables must be separately routed with a minimum space of 30 mm (1.18 in.) between every two cables. •Different types of cables must be installed in an untangled and orderly fashion. •Different types of cables must be routed in parallel or separated by special objects.
g
Special Cabling Requirements
1. Cabling requirements for power cables are as follows: •-48 V DC power cables must be bound together. •+24 V DC power cables must be bound together. •Power cables, transmission cables, and signal cables are routed separately. •Multiple power cables must be bound when routed. •Power cables must be installed in the position specified in engineering design documents. •If the length of power cables is insufficient, replace the cables rather than adding connectors or soldering joints to lengthen the cables.
2. Cabling requirements for PGND cables are as follows: •PGND cables for the base station must be connected to the same ground bar. •PGND cables must be buried in the ground or routed indoors. They should not be routed overhead before they are led into the equipment room. •The exterior of the coaxial wire and the shield layer of the shielded cable must have proper electrical contact with the metal surface of the equipment to which they are connected. •PGND cables and signal cables must be installed in an untangled and orderly fashion. A certain distance must be reserved between them to prevent interference from each other. •Fuses or switches must not be installed on the PGND cables. •Other devices must not be used for electrical connections of the PGND cables. •All the metal parts in the housing of the equipment must be reliably connected to the ground terminal.
60
Appendix
g Special Cabling Requirements 3. Cabling requirements for E1 cables are as follows: •E1 cables must not cross power cables, PGND cables, or RF cables when routed. If transmission cables are routed with power cables, PGND cables, or RF cables in parallel, the spacing between them must be greater than 30 mm (1.18 in.). •E1 cables are routed straightly and bound neatly with cable ties. •Sufficient slack is provided in E1 cables at turns.
4. Cabling requirements for optical fibers are as follows: •Do not stretch, step on, or place heavy objects on optical fibers. Keep the fibers away from sharp objects. •When optical fibers are routed, the extra length of the fibers must be coiled around special devices, such as a fiber coiler. •When coiling optical fibers, apply even strength. Do not bend the fibers with force. •Vacant optical connectors must be covered with dustproof caps.
h
Appearance of the Cables Installed in the BTS3900E —on the wall
Extension cabinet
Transmission device Alarm device
Main cabinet
External power supply system Cascaded SFP cables Cascaded optical fiber
• When the spacing between the main cabinet and the extension cabinet is less than 2 m, the cascaded SFP cable should be used. If the spacing between the main cabinet and the extension cabinet is within the range from 2 m to 10 m, the cascaded optical fiber should be used. • Bending radius of the cables should meet the specifications.
61
Appendix
i
Appearance of the Cables Installed in the BTS3900E —on the pole
Uplink cable ： RF jumper
A certain distance should be reserved between the AC power cable and other cables.
Downlink cable: Power cable PGND cable Alarm Cable Transmission cable Cascaded signal cable
62
Appendix
j
Installing the Grounding Clip Selecting the installation position of the grounding clip and stripping off the cable sheath with electric knife without any damage to the shielding layer.
Fixing the grounding clip and waterproofing it.
The angle resulting from the grounding wire of the clip and the cable should not be larger than 15 degrees. When the cable is vertically routed, the grounding wire of the clip should be led downwards.
63
Change History This describes the changes in the BTS3900E Installation Guide. 01 (2011-09-15) This is the first release.
64
HUAWEI TECHNOLOGIES CO., LTD. Huawei Industrial Base Bantian Longgang Shenzhen 518129 People’s Republic of China www.huawei.com
