10/5/12
GSM Protoc ol Analy z er
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GSM Protocol Analyzer
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Overview
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The Global Sy stem for Mobile communications is a digital cellular communications communicati ons system. GSM standards ar e used to prov ide the interface between the various entities in GSM network.
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Network Monit Monitoring oring Solution All Networks VoIP Network TDM Network Wireless Network Network Impairment Simulation
TDM Testing Solutions Analysis Platforms Hand Portable Te st Instruments Instruments T1/E1/T3/E3 Testing • Basic Applications • Optional A pplications pplications • Call & Signaling Analysis • Client/Server Software • Protocol Analysis • Protocol Emulation • MAPS™ Based Emulation Emulation • Echo Canceller Te sting sting • Voice Logger (CMU) T3 E3 OC 3/12 STM1/4 Testing Testing Digital & Analog Call S imulation imulation • Digital CO S witch witch • Analog Phone • BRI PRI SS7 • VQuad™ Voice Q uality Solutions Fax / Modem Te sting Miscellaneous Miscellaneous Software
GSM networks presently operate in three different frequency ranges, GSM 900 (operates in the 900 MHz frequency range; is used in most parts of the world -Europe, most of A sia, Australia, Africa, Middle East), GSM 1800 or DCS 1800 18 00 (operates in the 1800 MHz frequency range; is
User's Guide Product Brochure GSM Protocol Tutorial Sample Messages View Presentation
found in a numb found num ber of countries c ountries including including France, Ge rmany, Switzerland, the UK, and Russia) PCS 1900 or DCS 1900 - ( used in the United United States States and C anada). The differences between these appear to be minor and mainly confined to power levels, frequency, and minor changes in signaling. GL's GSM Analyzer is used to analyze GSM protocols, a switching switching and signaling telecommunication protocol protocol between MSC & BS C, BS C & BTS , MSC & SMLC, UMA & MS,. and so on. GSM analyzer also supports decoding proprietary 'Mobis' 'Mobis' Interface (Motorola equivalent of the GSM A-bis interface) with additional additional license XX151 be tween BSC (Base S tati tation on Controller) - BTS (Base Transceiver Station) and BSC (B ase Station Controller) - PCU (Packet Co ntroll ntroller er Unit). Other interfaces interfaces supported include Ls / Lb / Lp Interface (Interface between MSC and SMLC), and Up (Interface be tween UNC (UMA network controller) and MS). HDLC frames are par sed according to Q.921, SS7 information parsing is based on ANSI and IT U standards: T1.111, T1.111, T1.112, T1.113, T1.113, Q.703, Q.704, Q.708, Q.723, Q.763 & GSM information parsing is based on 3GPP TS 08.08¸ 3GPP TS 24.008,, 03.40, 3GPP TS 04.11, 3GPP TS 08.58, 3GPP TS 04.18. MTP2 is parsed according to A NSI-ITU standards and the 24.008 higher GSM layer information parsing depends on the user's selection of GSM 900, DCS 1800 & PCS 1900 according GSM variants. GL C ommunicati ommunications ons supports the following following types of GS M analyzers: Real-time GSM Analyzer (Pre -requisites: GL's field field proven E1 or T1 internal cards or USB Laptop E1 or T1 external units, required licenses and Windows XP (or higher) Operating System) Offline GSM Analyzers(Pre-requisites: Hardware Dongles and Windows XP (or higher) Ope rating System) In addition the following following GSM applications are supported that further help in emulating GSM protocol over A & Abis interfaces: Scripted GSM A Emulati Emulation on using MAPS™ Scripted GSM Abis Emulati Emulation on using MAPS™
GSM Analyzer Main Features Interfaces supported are A (Interface b/w BSC and MSC), A-bis (Interface b/w BSC and BTS), Mobis (Motorola (Motorola Proprietary Interface b/w BSC and BTS and also b/w BSC and PCU), Gs (Interface between SGSN and MSC), Ls / Lb / Lp Inte rface (Interfa ce be tween MSC and S MLC), Up ( Interfac e betwee n UNC ( UMA network c ontroller) and MS).
IP / VoIP Testing Solutions
www.gl.com/gsmanalyzer.html
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GSM Protocol Analyzer IP & VoIP A nalysis & Simulation LTE Analysis & Simulation PPP and ML PPP Te sting Protocol Analyzers Protocol Emulators MAPS™ Based Emulation IP Fax / Modem Testing IP Voice Quality Solutions VoIP EC Testing GL DataTest Server
Displays Summa ry, De tail, Hex-dump, Statistics, and C all Trace Views, the contents of this view can a lso be copied to clipboard. Summary View displays MTP2, MTP3 information, GSM Message types, information about various channels used during the call, frequency hopping and so on in a tabular forma t. Detail View displays decodes of a user-selected frame from the Summary V iew. Decoding of ma ny RR lay er non-transparent messages such as "System Information", "Measurement Result", "Immediate Assignment" etc. Statistics View displays statistics based on frame count, byte count, frames/sec, bytes/sec etc for the entire captured data. Ca ll Detail View displays ca ll statistics such as number of active/completed calls, durations of the completed calls, Type of Ca ll (e.g. SMS/Location Update/Authentication/Speech C all), IMSI/TMSI associated with each call.
Wireless Testing Solutions
Ca ll Detail Recording feature includes data link gr oups that help in defining the direction of the calls in a given network and form logical groups comprised of unidirectional (either 'Forward' or 'Backward') data links. Hex dump view displays raw fra me data as hex adecimal and AS CII octet dump, the contents of this view can
LTE Analysis & Simulation Wireless Voice Quality Wireless Protocol Analysis Wireless Protocol Emulation Voice Q uality Solutions
also be copied to clipboard. Search and filtering capabilities. Exports Summary View information to a comma de limited file for subsequent import into a da tabase or spreadsheet.
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Ca pability to export detailed decode information to an ASC II file. Any protocol field can be adde d to the summary view, filtering, and search features providing users more flexibility to monitor required protocol fields. Remote monitoring capability using GL's Network Surve illance System.
Additional features supported by real time GSM analyzer are Streams ca n be captured on the se lected time slots (contiguous or non-contiguous), sub-channels or full bandwidth. Real-time filtering based on the frame length. Supports decoding of frame s with FCS of 16 bits and 32 bits, or none. Recorded trace files can be played ba ck using HDLC Playback a pplication. Multiple streams of GS M traffic on various T1/E1 channels can be simultaneously decoded with different GUI instances. Frames can be transmitted or captured in either, n x 64 kbps, or n x 56 kbps data channels. The variations accommodated in the software are inverted or non-inverted data, and byte re versal or nonreversal.
Additional features supported by Offline GSM Analyzer: Trace files for analysis ca n be loaded through simple command-line arguments. Multiple trace files can be loaded simultaneously with different GUI instances for offline analysis.
The supported protocol interfaces in GSM analyzer are A -Interface, Abis-Interface, Gs-Interface, Up-Interface, Lb,Ls,LpInterfaces, Mobis Interface.
Supported Protocols: Supported Protocols
Specification Used
TC P
RFC 793
UDP
RFC 768
IP
RFC 791
MAC
IEEE 802.3
MTP2
Q.703, ITU-T Blue Book / ANSI T1.111-1996
MTP3
Q.704, ITU-T Blue Book / ANSI T1.111-1996
SC C P
Q.713, C C ITT (ITU-T) Blue Book / ANSI T1.112-1996
BSSMAP / DTAP
3GPP TS 48.008 10.0.0
SMS
3GPP TS 03.40 V7.5.0 & 3GPP TS 04.11 V7.1.0 GSM 03.38 version 7.2.0 Release 1998
Test & Network Management Messages (ITU)
ITU-T Q.703, Q.704
Test & Network Management Messages (ANSI)
ANSI T1.111.4, ANSI T1.111.7
MM
3GPP TS 04.08 V7.17.0
CC
3GPP TS 04.08 V7.17.0
LAPD
Q.921, C C ITT (ITU-T)
BTSM
3GPP TS 08.58 V8.6.0
RR
3GPP TS 04.18 V8.13.0
BSSAP+
3GPP TS 29.018 V6.0.0
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RRLP
3GPP TS 44.031 V 7.5.0
BSSLAP
3GPP TS 48.071 V 7.2.0
SMLC PP
3GPP TS 48.031 V 6.6.0
LLP
3GPP TS 44.071 V 6.0.0
BSS AP-LE (B SSMAP-LE/D TAP-LE)
3GPP TS 49.031 V 7.3.0
Mobis Layer 3
BSC-BTS: Motorola GSM Base Station System BSC to BTS Interface Design Specification. Document ID: GS D-GSM_NRS-MULTI_FA-IDS001. BSC-PC U: Motorola GSL External Interface Spe cification - GSR9. Document ID: GSD-GSR9-GSL-EIS-001.
UMA Protocols (Stage 3) R1.0.4
TS 24.008, Mobile radio interface layer 3 specification, Core Network Protocols - Stage 3 TS 25.331, RRC Protocol Specification TS 44.018, Mobile radio interface layer 3 specification TS 48.018, Base Station System (BSS) - Se rving GPRS Support Node (SGSN) TS 48.008, BSS GPRS Protocol (BSSGP) TS 45.008, Radio subsystem link control
GC C (Group C all C ontrol)
3GPP TS 44.068 V9.0.0
BC C (Broadcast C all C ontrol)
3GPP TS 44.069 V9.0.0
Click here to view the protocol glossary page for more information
Summary, Detail and Hex dump View The GSM analyzer application is invoked from the main me nu of GL's T1/E1 Analyzer for real-time analyzer. The offline GSM analyzer is invoked from the installation directory of the offline GSM Analyzer. The a nalyzer displays Summar y, Detail and Hex dump View in different panes. The Summary View displays Frame Number, Time, Length, BSN, BIB, FSN, FIB, SLC, OPC , DPC , SSN and Type of GSM Messages for all the frames. User can select a frame in Summary V iew to analyze and decode each frame in the Detail View. The Hex dump View displays the frame information in HEX and ASCII format.
Screen Shot of Summary, De tail and Hex dump View
Real-time and Offline Analysis Users can capture and analyze multi GSM links in real-time and record a ll or filtered traffic into trace file. The recorded trace file can be used for offline analysis or e xported to a comma-delimited file, or ASC II file. Real-time capturing requires (except for Up Interface) user to specify timeslots, bit inversion, octet bit reversion, user/network side, FCS, and data transmission rate. Recorded trace file can be opened later for o ffline analysis and can then transmit using HDLC playback file application.
Screen Shot of Rea l-time and Offline Analysis
Filtering and Search Users can record all or filtered traffic into a trace file. Filtering and se arch capabilities adds another powerful feature to the GSM Analyzer. This features isolate the required frames from cap tured frames in real-time as well as off-line. Users can specify custom values for frame length to filter frames during real-time capture. The frames can also be filtered after completion of capture according to Frame Number, Time, Length, Error, BSN, BIB, FSN, type of GSM Message and more. Similarly, search capa bility helps user to search for a particular frame base d on specific search criteria.
Screen Shot of Se tting the Filtering C riteria
Call Detail Record and Statistics View Important call specific parameters like status of each call (i.e. active/completed), duration of completed call, Call status, Call Typ e (e.g. SMS/Location Update/Authentication/ Speech C all), IMSI/TMSI associated with each call, C all OPC , DPC etc., are displayed in the C all Detail Record View. C all traces can also be logically grouped, with each group comprised of unidirectional (either 'Forward' or 'Backward') data links. Additionally, users are prov ided with the option to search for a particular call detail record from the captured traces. Statistics is an important feature ava ilable in GSM analyzer and ca n be obtained for all frames both in real-time as well as offline mode. Numerous statistics can be obtained to study the performa nce and trend in the GS M network and it is based on protocol fields and different parameters.
Screen Shot of Statistics and C all Detail Record View
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GSM Protocol Analyzer
Enhanced Trace Saving Options Users can control the captured trace files by saving the trace using different conventions such as trace files with userdefined prefixes, trace file with date-time prefixes, and slider control to indicate the total number of files, file size, frame count, or time limit. This feature also allows the captured frame s to be sa ved into a trace file based on the filtering criteria set using display filter feature.
Screen Shot of Enhanced Trace Saving Options
Save/Load All Configuration Settings Protocol Configuration window provides a consolidated interface for all the GUI a nd Protocol settings required in the analyzer. This includes various options such as protocol selection, startup options, filter/search cr iteria and so on. Any protocol field can be added to the summary view, filtering, and search features from this GUI providing the users more flexibility to monitor required protocol fields. All the configuration settings done in any of these options can be saved to a file, loaded from a configuration file, or user ma y just reve rt to the default values using the default option.
Screen Shot of Sa ve/Load All C onfiguration Settings
Scripted GSM Emulation over A & Abis interfaces using MAPS™ GL's GSM A I nterface Emulator is an adva nced protocol simulator/tester for GS M simulation over A Interface that can simulate network elements MSC and BS C by generating and receiving BSSMAP and DTA P messages. The signaling specification conforms to ITU-T and 3GPP standards. For more de tails, click here. GL's GSM Abis Interface Emulator is an advanced protocol simulator/tester for GSM simulation over Abis Interface that can simulate network elements BTS and BSC by generating and receiving B TSM messages. The signaling specification conforms to 3GPP standards. For more details, click here.
Bridge and Monitor C onnections Monitor from a DSX-Patch Panel Bridge Mode Connections for Monitoring T1/E1 Signals for RJ-45 Bridge Mode Connections Alternative Method RJ-45 C onnections
Buyer's Guide: Please Note: The XX in the Item No. refers to the hardware platform, listed at the bottom of the Buyer's Guide, which the software will be running on. Therefore, XX ca n either be ETA or EEA (Octal/Quad Boards), PTA or PEA (tProbe Units), UTA or UEA (USB Units), HUT or HUE (Universal C ards), and HDT or HDE (HD cards) depending upon the hardware. Item No.
Item Description
XX150
T1 or E1 Real-time GSM Protocol Analyzer
OLV150
Offline T1 or E1 GSM Protocol Analyzer
XX151
GSM Motorola Mobis option Related Software
XX600
Basic Client/Server Scripted Control Software
XX692
GSM A I nterface Emulator
XX693
MAPS™ GSM Abis Interface Emulator
XX090
HDLC Capture and Playback Software (T1 or E1)
XX120
Real-time SS7 Analyzer (T1 or E1)
XX153
TRAU Analyzer
XX155
GPRS Protocol Analyzer Related Hardware
PTE001
t Probe™
Dual T1 E1 Laptop Analyzer with Basic Analyzer S oftware
HDT001/HDE001
Legacy HD T1 or E1 (PCI) Cards with Basic Analyzer S oftware
HTE001
Universal T1/E1 Card with Basic Analyzer Software
UTE001
Portable USB based Dual T1 or E1 Laptop Analyzer with Basic Analyzer Software
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GSM Protocol Analyzer
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