4000 Router Series Interface Module Guide

• When a BSV interface works in network mode, traffic is processed as follows: The digital voice

traffic received on the BSV interface is compressed and forwarded through the CPU on the main

control board to a WAN interface. The IP voice traffic received on a WAN interface is forwarded

through the CPU on the main control board to SIC-2BSV, where the traffic is decompressed and sent

to the TE device.

• When a BSV interface works in user mode, traffic is processed as follows: The digital voice traffic

received from the B channels on the BSV interface is decompressed and forwarded through the CPU

on the main control board to a local FXS or FXO analog voice interface. The voice signals received

on the local FXS or FXO analog voice interface are processed by VoIP and forwarded through the

CPU on the main control board to SIC-2BSV, where the traffic is compressed and sent out of the BSV

interface to the ISDN switch.

• Working in conjunction with the FXS or FXO analog voice interface modules, SIC-2BSV provides

flexibility in voice call routing.

• The ISDN BRI D channel signaling is processed separately on CPU.

• A BSV interface supports remote power supply and thus can be connected directly to an ISDN

phone, saving extra power supply device.

• The SIC-2BSV is dedicated to voice applications, which is different from the BS interface modules

where BRI data applications are supported.

Interface attributes

Table 38 Interface attributes of SIC-2BSV

Attribute SIC-2BSV

Connector RJ-45

Number of connectors 2

Interface standard ITU-T I.430, Q.921, Q.931

Interface rate 192 Kbps

Cable ISDN S interface cable

Supported service Voice access over ISDN S interface cable

Interface LEDs

The following figure illustrates the SIC-2BSV panel.

Figure 25 SIC-2BSV panel

The following table describes the LEDs on SIC-2BSV panel.

Table 39 LEDs on SIC-2BSV panel

LED Descri

tion

Green

Flashing indicates data is being transmitted or received on B1 channel.