Chapter 2 Processor Cards Feature Summary
Voice and WAN Interface Cards
2-44
Cisco ICS 7750 System Description
78-10360-02
VWICs
This section describes the VWICS that are available for use in the MRP card and
the ASI81 card:
• VWIC-1MFT-T1 and VWIC-2MFT-T1
• VWIC-1MFT-E1 and VWIC-2MFT-E1
VWIC-1MFT-T1 and VWIC-2MFT-T1
The VWIC-1MFT-T1 card is a one-port, RJ-48 multiflex trunk T1 interface card
that supports 24 channels (see Figure 2-16). The VWIC-2MFT-T1 card is a
two-port, RJ-48 multiflex trunk T1 interface card that supports 48 channels (see
Figure 2-17). Use the cards for the following applications:
• Data: As a WIC for T1/fractional T1 applications. The card integrates a fully
managed CSU/DSU.
• Packet voice: As a VIC for the Digital T1 Packet Voice Trunk Network
Module to provide T1 connections to PBXs and central offices (COs),
enabling new services and reducing voice/fax toll charges.
• Multiplexed voice/data: As a dual-port T1with integrated CSU/DSUs,
reducing the complexity and number of network components and easing
migration to bandwidth-efficient packet voice.
Configuration Guidelines
The following configuration guidelines apply to the VWIC-1MFT-T1 and
VWIC-2MFT-T1 cards:
• Each MRP supports a maximum of two T1 spans.
• Each MRP supports a maximum of one T1 voice span.
• Each MRP supports a maximum of one T1 data span.
–
When one VWIC-1MFT-T1 card is used for data, it supports 24
simultaneous data connections.
–
When one VWIC-2MFT-T1 card is used for a T1 voice span, it can
support up to 24 simultaneous voice connections.
• Each VWIC card supports a maximum of one channelized T1 group for data.
