Cisco Systems ICS 7750 Manual De Usuario

This section describes the VICS that are available for use in the MRP card and the 
ASI81 and MRP3-FXS card:

The VIC-2DID card is a DID interface card with two ports (see

). Use 

this card to connect directly to a PSTN line that has been provisioned for DID or 
to connect to a PBX. 

VWIC-2MFT-T1

Two-port T1/fractional T1 multiflex trunk with CSU/DSU

VWIC-2MFT-E1

Two-port E1/fractional E1 multiflex trunk with CSU/DSU

1.

DID = Direct Inward Dialing

2.

ISDN = Integrated Services Digital Network

3.

BRI = Basic Rate Interface

4.

FXO = Foreign Exchange Office

5.

E&M = ear and mouth

6.

CSU/DSU = channel service unit/data service unit