H3C MSR Router Comware 5 Series Manual page 38

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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.
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Working in conjunction with the FXS or FXO analog voice interface modules, SIC-2BSV
provides flexibility in voice call routing.
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The ISDN BRI D channel signaling is processed separately on CPU.
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A BSV interface supports remote power supply and thus can be connected directly to an ISDN
phone, saving extra power supply device.
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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 specifications
Table 40 Interface specifications
Item
Connector
Number of connectors
Interface standard
Interface rate
Cable
Supported service
Interface LEDs
Figure 34 SIC-1BSV panel
Figure 35 SIC-2BSV panel
SIC-1BSV
RJ-45
1
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ITU-T I.430
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Q.921
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Q.931
192 Kbps
ISDN S interface cable
Voice access over ISDN S interface cable
29
SIC-2BSV/
2