Router 1-Port T1 Voice Fic; Introduction; Interface Attributes - 3Com 3C13886 - Router OC-3 ATM SML Flexible Interface Card Installation Manual

3Com Router Module Guide
Router Router
Figure 4-55 Extend an E1 120-ohm balanced twisted-pair cable
If the impedance of the to-be-connected port is 75-ohm,
Use a 75-to-120-ohm adapter for connection.
Step 3: Power on the router, and check the behavior of the LINK LED on the ROUTER
1-PORT E1 VOICE FIC panel: OFF means fault occurs on the line. Check it for the
cause.

4.17 ROUTER 1-PORT T1 VOICE FIC

4.17.1 Introduction

ROUTER 1-PORT T1 VOICE FIC, the 1-port T1 voice interface card, is intended for
handling dense signals in a VoIP system. It delivers the VoIP function on T1 lines.
The ROUTER 1-PORT T1 VOICE FIC comprises one motherboard and one daughter
card, providing a CT1/PRI interface for handling 24 channels of voice signals.

4.17.2 Interface Attributes

The following table describes the ROUTER 1-PORT T1 VOICE FIC interface
attributes.
Table 4-37 Interface attributes of the ROUTER 1-PORT T1 VOICE FIC
Connector
Number of connectors
Cable
Operating mode
DB-15 DB-15
RJ-45 RJ-45
120- ohm balanced 120- ohm balanced
Network interface Network interface
twisted pair cable twisted pair cable
Attribute
RJ-45 RJ-45
120- ohm E1 120- ohm E1
trunk cable trunk cable
connector connector
DB-15
1
ROUTER 1-PORT T1 VOICE FIC cable (100-ohm balanced
STP)
Network connector
CT1
ISDN PRI
4-57
Chapter 4
Voice Voice
Device Device
Description