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Analog Voice Modules Passport 4400 Hardware Installation Manual
8-13
Analog Voice Module (AVM)
The Analog Voice Module converts analog signals to digital for processing by the
Passport 4400 unit. FXS, FXO, and E&M interfaces are determined by changing
the straps on the front of the module’s circuit board.
Figure 8-14. Front View and Indicators for Analog Voice Module
Figure 8-15. Dual and Single Analog Voice Modules
OK LO RO LS RS TM OK LO RO LS RS TM
Dual Channel Analog Voice Module
OK LO RO LS RS TM
Single Channel Analog Voice Module
Dual Channel Analog Voice
Single Channel Analog Voice