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HP MSR3000 Router Series Installation Guide

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Figure 64 MSR3064 internal module locations
(1) Front panel (2) Rear panel
(3) VPMs
(4) Memory module
Replacing a VPM
VPM (Voice Processing Module) functions to implement the encryption/decryption, EC and CNG of
voices. The following types of VPM modules are available on the MSR3000 routers:
• 256-channel voice processing module (256-VPM)
• 512-channel voice processing module (512-VPM)
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