H3C Technologies H3C MSR 50 - Manual (Page 295)

5-5
z
The multi-service module A (MSCA) of an MSR 50 series router provides VCPM and VPM slots,
but the multi-service module B (MSCB) provides only one VCPM slot. No VCPM and VPM slots are
installed when MSR is shipped.
z
Install VCPM and VPM modules on a MSCA when installing the SIC-VE1/SIC-VT1 on the MSR 50
series routers. The specifications and number of VPM modules needed depend on the number of
calls.
z
The FIC-1VE1/FIC-1VT1 module provides one VCPM slot and one VPM slot and the
FIC-2VE1/FIC-2VT1 module provides one VCPM and two VPM slots. The FIC-2VE1/FIC-2VT1
module has a VCPM installed when MSR is shipped.
z
The VCPM module installed on the MSCR/MSCB of an MSR 50 series router is different from that
installed on the FIC-VE1/FIC-VT1 module. Therefore, they cannot be used interchangeably.
z
The FIC-VE1/FIC-VT1 is used with a VPM module installed. The specifications and number of
VPM modules needed depend on the number of calls.
z
The VPM modules installed on the MSCA of the MSR 50 series routers are the same as that
installed on the FIC-VE1/FIC-VT1 modules.
z
If you install more than two FIC-VE1/FIC-VT1 modules on an MSR 30 series router, you need to
add another VCPM module on the MSCA/MSCA.
VCPM
Introduction
Voice co-processing module (VCPM) provides transmission channel between DSP strip and system
memory for voice data, thus implementing TDM HW exchange for each PCM data voice channel.
VCPM module is required for voice communications of routers.
Interface attributes
Table 5-5 Interface attributes of the VCPM module
Attribute Description
Connector Double-edge connector
Interface type PCI 2.2, EHPI
Data transmission
rate
z Operating rate for PCI bus: 33 MHz/66 MHz
z
Maximum bandwidth: 264 Mbps
z
BURST transmission: Up to 1 KB of data can be transmitted once and the maximum
number of bytes transmitted can be configured.
Interface LEDs
There is no LED on the VCPM module and display of the status of the module is implemented through
the VCPM interface LED on the main board of the router.
The following table describes the LEDs on the main board:
Table 5-6 Description on the LEDs
LED Description
VCPMx
z
Green: VCPM module is in the slot and is operating normally.Yellow: VCPM module is in
the slot but cannot be accessed by the router.