4. Sistemas de apoyo de operaciones Cobranza y Atención al Cliente
Aprovisionamiento de Servicios
Bases de datos de suscriptores • Tarifas fijas y cobranza por consumo • Servicios integrados/paquetes de cobranza • Cuidado del cliente • Administración de la pérdida de suscriptores •
• Servicios de datos • Servicios de voz • Servicios de video
Red de cable
Servicios Avanzados (Redes Inteligentes)
Administración de Red (Fallas/Desempeño) •
•
•
Recolección y análisis de alarmas Monitoreo del desempeño y la capacidad del sistema Identificación y corrección de problemas
•
•
•
Servicios integrados de voz, video y datos Capacidad de crear servicios rápidamente Servicios de suscripción y servicios basados en el uso
4. Sistemas de apoyo de operaciones •
Aplicaciones que establecen la interconexión entre la operación de la red con la del negocio. Datos del negocio
Suscriptor
•
Datos de la red
OSS
Facilitan la generación de procesos claves: Facturación y atención al cliente • Aprovisionamiento de servicios • Administración de la red • Servicios avanzados •
RED
4. Sistemas de apoyo de operaciones Sistemas de Facturación y Servicio al cliente • En esta rama caen todos los CRM (Customer Relationship Management). Ej. Siebel, Comarch, etc. • Muchas veces son sistemas desarrollados “In house” •
El sistema de facturación se comunica con el sistema de aprovisionamiento para habilitar o deshabilitar servicios
4. Sistemas de apoyo de operaciones Sistemas de Aprovisionamiento de Servicios • Son los servidores que soportarán la configuración de los equipos finales (MTAs) • Contienen servicios de DHCP, ToD, TFTP, DNS. • Pudieran contener también los servidores de Kerberos para seguridad • Ejemplos de estos son: Intraway, Incognito, Cisco IP Solution Center, etc.
4. Sistemas de apoyo de operaciones Sistemas de Administración de Red • Por lo general, los cable operadores cuentan con un NOC desde donde se hace todo el monitoreo de los equipos. • Están al pendiente de cualquier falla que pudiera ocurrir, para darle una pronta solución • El monitoreo debe ser 24 horas, los 365 días del año. • Se realizan estadísticas que sirven para preveer la capacidad del sistema.
4. Sistemas de apoyo de operaciones Servicios Avanzados • Son los servidores que permiten aplicaciones avanzadas como teleconferencias, video juegos, video digital, etc. • Permiten la habilitación de servicios en demanda. • Servidores de Políticas y Servidores de Aplicaciones.
Cuestionario de repaso
• •
Mencione tres problemas comunes en el servicio de telefonía IP ¿En qué área del diagrama Sistema de Apoyo de Operaciones se encuentra usted en cuanto a la operación del sistema?
BIBLIOGRAFÍA Y LIBROS RECOMENDADOS • Ciciora,Walter
et. al. Modern Cable Television Technology 2nd Edition. Ed. Morgan Kaufmann. USA. 2004. • www.cablelabs.com
MUCHAS GRACIAS! Felipe Guerra IP Systems Engineer Motorola de México Connected Home Solutions Bosque de Alisos 125 Mexico DF Email:
[email protected] Mobile: +52 55 2900 9554
GLOSARIO ABSBH
Average Busy Season Busy Hour. The three months (not necessarily consecutive) with the highest average traffic in the busy hour are termed the “busy season.” The busy hour traffic level averaged across the busy season is termed the “ABSBH load”.
ANC ANP AS (ANS) BH BHCA BPI+ CA CableLabs Call Agent CLASS CM
CMS CMTS CODEC
Announcement Controller Announcement Player Announcement Server Busy Hour Busy Hour Call Attempts. Measure of call signal loading. Baseline Privacy Plus. A DOCSIS 1.1 security service for providing DES encryption of HFC messages. Call Agent. A North American cable industry forum driving standards for voice and data services. Term used for the entity responsible for managing voice call setup and teardown. Custom Local Area Signaling Services Cable Modem. The customer premises equipment for DOCSIS. This devices bridges Ethernet based data traffic to and from the cable network. Call Management Server. PacketCableTM term for the Call Agent. Cable Modem Termination System. The head end component of a cable modem network. In particular, the CMTS manages access to the downstream and upstream bandwidth according to DOCSIS or EuroDOCSIS standards. Voice Coder/Decoder. As used here, the device that takes analog voice signals and digitizes them or digitized voiced and converts back to analog.
COPS
Common Open Policy Service. Protocols used to carry PacketCable DQOS gate control messages between CMS and CMTS.
CPE
Customer Premises Equipment. Refers equipment in or at the customer premises. This refers to non-DOCSIS/non-PacketCable such as telephones, faxes, and computers, but may also refer to eMTAs and Cable Modems. Dynamic Host Control Protocol. Used dynamically to assign IP addresses to terminals and provide additional information typically required at terminal boot time. Domain Name Server. Translates a FQDN to an IP address.
DHCP DNS
GLOSARIO DOCSIS Downstream DQOS eMTA
Erlang ErlangB FEC Gateway GC G.711 HDBH
Data Over Cable Service Interface Specifications. A series of specifications defining physical and link layer protocols and appropriate support systems for use in providing IP based services over cable plant. From the head end toward the terminal. Dynamic Quality of Service. A PacketCable standard for assigning and policing DOCSIS 1.1 resources. Embedded Multimedia Terminal Adaptor. A residential VoIP gateway device with embedded cable modem. The eMTA may be an inside or outside, tabletop or wall-mount device providing primary or secondary telephone line service. Measure of voice loading The probability of voice call blocking Forward Error Correction. In this context, a Public Switched Telephone Network gateway, used to convert from the packet domain of the VoIP network to the circuit switched domain of the PSTN. Gate Controller International Standard for PCM High Day Busy Hour. The one-day among the same ten days that has the highest traffic during the busy hour is designated the (annually recurring) “high day”.
Head End HFC HHP HSD ISUP
KDC Kerberos LE LEC MAC
The signal source point for a cable plant. Hybrid Fiber Coax. A network architecture where content is carried using fiber for long hauls and coax cable in the neighborhood. HouseHolds Passed – the number of possible subscribers the HFC plant could reach. High-speed data interface. Ethernet or USB in eMTA products. ISDN User Part. A protocol within SS& suite of protocols that is used for call signaling within an SS& network. Key Distribution Center A key management protocol Local Exchange – The switching device between the PSTN trunks and the Access Network.
Local Exchange Carrier Media Access Layer
GLOSARIO MG MGC MGCP MOS MSO MTA
NCS NMS OSS PacketCableTM PCMM QAM QOS QPSK RF RFI RKS RTCP RTP SDH SDP SF
Media Gateway Media Gateway Controller. The CMS function used to control MG in a Full VoIP architecture. Media Gateway Control Protocol. An IETF protocol that merges SGCP and IPDC (Internet Protocol Device Control) MEAN Opinion Score. A single number describing voice quality on a scale of 1 to 5. Multi-System Operator. Multimedia Terminal Adaptor. Subscriber equipment that provides the interface for call signaling and media transport between the telephone and network elements. There are two types of MTA, embedded (eMTA) and standalone (sMTA).
Network-based Call Signaling. A PacketCable protocol for managing call setup in a Voice over IP network, a profile of MGCP with additional commands supporting network management. Network Management Server Operations Support System. Any one of a multitude of large-scale applications used to support the day-to-day operations of the extremely large scope networks deployed by major data and voice carriers. A CableLabsTM sponsored initiative focusing on standardizing the delivery of multimedia traffic (particularly Voice over IP) over HFC cable plants. PacketCable™ Multimedia
Quadrature Amplitude Modulation Quality of Service Quaternary Phase Shift Keying. Radio Frequency. The DOCSIS Radio Frequency Interface Specification. Record Keeping Server Real Time Control Protocol used to manage RTP. Real Time Protocol used to stream audio in VoIP. Synchronous Digital Hierarchy Session Description Protocol. Service Flow. A unidirectional flow of packets on the RF interface of a DOCSIS system.
