Техническая Спецификация для Cisco 1-Port ISDN BRI NT-1 WAN Interface Card for 1700/2600/3600/3700 Series Routers WIC-1B-U-V2=
Модели
WIC-1B-U-V2=
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Voice Trunk Network Module (NM-HDV), 2 slot IP Communications Enhanced Voice/Fax Network Module (NM-HD-2VE), or IP
Communications High-Density Digital Voice/Fax Network Module (NM-HDV2), IP Communications High-Density Digital Voice NM with 1
T1/E1 (part number NM-HDV2-1T1/E1), IP Communications High-Density Digital Voice NM with 2 T1/E1 (part number NM-HDV2-2T1/E1).
APPLICATIONS
Packet Voice Solutions: PBX and Central-Office Connectivity
The Cisco MFT VWIC2 interface cards, through its digital T1/E1 ports, supply PBX and public-switched-telephone-network (PSTN) connectivity
for the Digital T1/E1 Packet Voice Trunk Network Module (NM-HDV), 2 slot IP Communications Enhanced Voice/Fax Network Modules (NM-
HD-2VE), IP Communications High-Density Digital Voice/Fax Network Modules (NM-HDV2), IP Communications High-Density Digital Voice
NM with 1 T1/E1 (part number NM-HDV2-1T1/E1), IP Communications High-Density Digital Voice NM with 2 T1/E1 (part number NM-HDV2-
2T1/E1), and access routers with on-board VIC/WIC/HWIC slots. The NM-HDV, NM-HD-2VE, NM-HDV2, NM-HDV2-1T1/E1, NM-HDV2-
2T1/E1, and access routers support H.323-, Session Initiation Protocol (SIP)-, Media Gateway Control Protocol (MGCP)-, and Skinny Client
Control Protocol (SCCP)-based VoIP-, FRF.11-, and FRF.12-based VoFR, and ATM Adaption Layer 5 (AAL5)-based voice-over-ATM (VoATM)
industry standards.
Note:
For each of these packet voice applications (VoIP, VoFR, or VoATM), an appropriate WIC also is required.
Packet Voice Solutions: Echo Cancellation for Demanding Network Conditions
The Cisco MFT VWIC2 interface cards have an onboard slot for a 32- or 64-channel Cisco MFT Dedicated ECAN Module (part number EC-MFT-
32 or EC-MFT-64) (see Figure 2). These optional daughter cards provide a dedicated hardware resource that runs the Cisco Enhanced ITU-T G.168
ECAN feature. The processing and memory resources of the dedicated ECAN module help enable configuration of the echo canceller with
predefined settings and an extended 128-ms echo tail buffer, providing a robust echo-cancellation performance for demanding network
environments. The 32- and 64-channel configurations of the dedicated ECAN modules match the requirements of the Cisco 1- and 2-port MFT
VWIC2 cards, respectively.
Figure 2. Cisco 2-Port T1/E1 MFT VWIC2 (part number VWIC2-2MFT-T1/E1) with an Optional 64-Channel MFT Dedicated ECAN
Module (part number EC-MFT-64)
Data Solutions: 1- and 2-Port T1/E1 WIC with Integrated DSU/CSU
The Cisco MFT VWIC2 interface cards simplify branch-office connectivity by integrating the functions of a router, T1/E1, and fractional T1/E1
serial interface with a fully managed DSU/CSU.
When used for “data-only” WAN connectivity, the Cisco MFT VWIC2 cards support numerous functions, including Cisco IOS
®
Software
Command-Line Interface (CLI)-initiated loopback control, similar to the popular 1 Port T1/Fractional T1 DSU/CSU WAN Interface Card
(part number WIC-1DSU-T1). Additionally, the MFT VWIC2 also is offered in dual-port versions, including dual T1/E1 configurations, enabling
increased WAN port density in Cisco 1800, 2800 and 3700 series and Cisco 3800 routers and supported Cisco 1700, 2600 and 3600 series access
routers. The T1/E1 MFT VWIC2 versions include integrated DSU functions for E1 deployments and integrated CSU and DSU functions for T1
deployments, simplifying remote network management.