VoicePlus

Модуль ForeRunner Voice для ATM коммутаторов
ASX-200BX и ASX-1000
Производитель: FORE Systems

Назначение: интеграция WAN- каналов, включая данные, голос и видео в ATM поток.
ForeRunner Voice Circuit Emulation Service модуль для коммутаторов ASX200BX и ASX1000 позволяет непосредственно подключать к своим 6-ти E1 портам АТС, мультиплексоры, видео кодеры. В ряде случаев это позволяет избежать затрат на покупку отдельных устройств доступа. Отличительными особенностями модуля являются возможность индивидуально маршрутизировать каждый DS0 канал из любого E1 канала ( при этом модуль распознает и передает внутриканальную сигнализацию) и возможность уменьшать задержки пакетизации, повышая качество передаваемой речи, путем изменения степени заполнения ATM ячеек передаваемым трафиком.

ForeRunner VoicePlus Circuit Emulation Services (CES) Network Module

ForeRunner^® VoicePlus^TM delivers robust Circuit Emulation Service for the seamless migration of time division multiplexing (TDM) equipment to a common multi-service ATM infrastructure.

VoicePlus enables FORE's customers to optimize their investment in ATM switching by taking full advantage of ATM’s inherent quality-of-service (QoS) capabilities, cost-effectively consolidating separate overlay voice, videoconferencing, video distribution, and data networks to a scalable ATM backbone.

Substantial network savings are realized through the reduction of leased line charges, network support and administrative costs, and overall network complexity. The VoicePlus network module is fully compatible with FORE's existing line of ASX-200BX and ASX-1000 backbone ATM switches
VoicePlus Application Diagram

Technical Specifications

Port Capacity: 6-port DS-1 and E-1 network modules

Data Rate: DS-1 1.544 Mbps
E-1 2.048 Mbps

Media: Unshielded twisted pair (UTP)

Connector: RJ-48c

Circuit Framing: Structured Service: Digital cross-connect emulation where Nx64 kbps and Nx56 kbps circuits are mapped to unique ATM Virtual Connections (VCs); N = 1 to 24/1 to 31 contiguous or non-contiguous Digital Signal Level Zero (DS-0) channels per DS-1/E-1 VoicePlus port
Unstructured Service: Full bandwidth 1.544 Mbps (DS-1) and 2.048 Mbps (E-1) clear channel service per VoicePlus port

Circuit Signaling: Channel Associated Signaling (CAS) and Basic modes supported with Structured Service

Line Framing: DS-1 Version - ESF (Extended Superframe) and SF (Superframe)
E-1 Version - G.704

Line Coding: DS-1 Version - AMI and B8ZS
E-1 Version - HDB3 (G.703)

Clocking: Synchronous Clocking - Structured and Unstructured Services: primary and secondary 8 kHz reference source from internal fabric (default), network port, or on-card crystal
Asynchronous Clocking - Unstructured Service

Variable Cell Fill: Configurable AAL1 ATM cell payload fill from 9 to 47 bytes

Loopbacks: Per port line/payload loopback

Statistics/Alarms: Header errors, pointer re-frames, lost cells, buffer underflows, buffer overflows, errored seconds (ES), severely errored seconds (SES), severely errored framing seconds (SEF), unavailable seconds (UAS), controlled slip seconds (CSS), path coding violations (PCV), line errored seconds (LES), bursty errored seconds (BES), degraded minutes (DM), line coding violations (LCV), cell loss status, loss of frame (LOF), alarm indication signal (AIS), loss of signal (LOS), loss of multi-frame (LOMF)

Compliance: ATM Forum Circuit Emulation Service Interoperability Specification v2.0 (ATM Forum/95-1504R1), ANSI/Bellcore T1.403, ITU-T G.703, G.704, G.823, G.824

Port Capacity:	6-port DS-1 and E-1 network modules
Data Rate:	DS-1 1.544 Mbps E-1 2.048 Mbps
Media:	Unshielded twisted pair (UTP)
Connector:	RJ-48c
Circuit Framing:	Structured Service: Digital cross-connect emulation where Nx64 kbps and Nx56 kbps circuits are mapped to unique ATM Virtual Connections (VCs); N = 1 to 24/1 to 31 contiguous or non-contiguous Digital Signal Level Zero (DS-0) channels per DS-1/E-1 VoicePlus port Unstructured Service: Full bandwidth 1.544 Mbps (DS-1) and 2.048 Mbps (E-1) clear channel service per VoicePlus port
Circuit Signaling:	Channel Associated Signaling (CAS) and Basic modes supported with Structured Service
Line Framing:	DS-1 Version - ESF (Extended Superframe) and SF (Superframe) E-1 Version - G.704
Line Coding:	DS-1 Version - AMI and B8ZS E-1 Version - HDB3 (G.703)
Clocking:	Synchronous Clocking - Structured and Unstructured Services: primary and secondary 8 kHz reference source from internal fabric (default), network port, or on-card crystal Asynchronous Clocking - Unstructured Service
Variable Cell Fill:	Configurable AAL1 ATM cell payload fill from 9 to 47 bytes
Loopbacks:	Per port line/payload loopback
Statistics/Alarms:	Header errors, pointer re-frames, lost cells, buffer underflows, buffer overflows, errored seconds (ES), severely errored seconds (SES), severely errored framing seconds (SEF), unavailable seconds (UAS), controlled slip seconds (CSS), path coding violations (PCV), line errored seconds (LES), bursty errored seconds (BES), degraded minutes (DM), line coding violations (LCV), cell loss status, loss of frame (LOF), alarm indication signal (AIS), loss of signal (LOS), loss of multi-frame (LOMF)
Compliance:	ATM Forum Circuit Emulation Service Interoperability Specification v2.0 (ATM Forum/95-1504R1), ANSI/Bellcore T1.403, ITU-T G.703, G.704, G.823, G.824