3Com 3C13886 Installation Guide - Page 160

3Com Router Module Guide Chapter 4 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.) 4-51