H3C MSR Router Comware 5 Series Manual page 97

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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 the MIM-2BSV/MIM-4BSV module,
where the traffic is compressed and sent out of the BSV interface to the connected ISDN switch.
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Working in conjunction with the FXS or FXO analog voice interface modules,
MIM-2BSV/MIM-4BSV provides flexibility in voice call routing.
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The signaling on the ISDN BRI D channel is processed separately on CPU.
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The BSV interfaces support remote power supply and thus can be directly connected to ISDN
phones.
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MIM-2BSV/MIM-4BSV is dedicated to voice applications, which is different from the BS
interface modules where BRI data applications are supported.
Interface specifications
Table 120 Interface specifications
Item
Connector
Number of connectors
Interface standard
Interface rate
Cable
Supported service
Interface LEDs
Figure 94 MIM-2BSV panel
Figure 95 MIM-4BSV panel
MIM-2BSV module
RJ-45
2
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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
88
MIM-4BSV module
4