H3C Technologies H3C MSR 50 - Manual (Page 73)

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voice packets from the TE device to the Internet through a WAN interface on the router, thus
implementing VoIP. The module has the following features.
z
A BSV interface supports two modes: user and network, respectively for connecting an ISDN
network and a TE device.
z
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-1BSV/SIC-2BSV, where the traffic is
decompressed and sent to the TE device.
z
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-1BSV/SIC-2BSV, where the traffic is
compressed and sent out of the BSV interface to the ISDN switch.
z
Working in conjunction with the FXS or FXO analog voice interface modules, SIC-1BSV/SIC-2BSV
provides flexibility in voice call routing.
z
The ISDN BRI D channel signaling is processed separately on CPU.
z
A BSV interface supports remote power supply and thus can be connected directly to an ISDN
phone, saving extra power supply device.
z
The SIC-1BSV/SIC-2BSV is dedicated to voice applications, which is different from the BS
interface modules where BRI data applications are supported.
Interface attributes
Table 2-42 Interface attributes of SIC-1BSV/SIC-2BSV
Attribute SIC-1BSV SIC-2BSV
Connector RJ-45
Number of connectors 1 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-1BSV panel.
Figure 2-67 SIC-1BSV panel