3Com Router Module Guide
Chapter 4
4-51
4.15 ROUTER 2-PORT FXS/2-PORT FXO FIC and ROUTER
4-PORT FXS/4-PORT FXO FIC
4.15.1 Introduction
The 2-/4-port voice subscriber circuit interface card, processes and transmits over
data communications networks voice signals for 2/4 regular analog phones, faxes, or
AT0 loop trunks of telephone exchanges.
The 2-/4-port voice AT0 analog trunk interface card, processes and transmits over
data communications networks voice signals for 2/4 loops of telephone exchanges.
Caution:
When connecting the ROUTER 2-PORT FXS/2-PORT FXO FIC or the ROUTER 4-PORT FXS/4-PORT
FXO FIC, make sure your router has access to an IP network or some other WAN.
4.15.2 Interface Attributes
The following table describes the interface attributes of the ROUTER 2-PORT
FXS/2-PORT FXO FIC and the ROUTER 4-PORT FXS/4-PORT FXO FIC.
Table 4-33
Interface attributes of the ROUTER 2-PORT FXS/2-PORT FXO FIC and the ROUTER
4-PORT FXS/4-PORT FXO FIC
Attribute
Description
Connector
RJ-45
Number of
connectors
2 (ROUTER 2-PORT FXS/2-PORT FXO FIC)
4 (ROUTER 4-PORT FXS/4-PORT FXO FIC)
Cable
Telephone cable with ferrite core
Interface standard
ITU Q.512-compliant subscriber circuit interface
ITU Q.552-compliant loop trunk interface
ITU K.20-compliant overcurrent protection
Dial-up mode
Dual-tone multifrequency (DTMF), compliant with GB3378
(Pulse dial is not available.)