The Avaya IP400 VCM 4 provides four voice compression channels for your Avaya IP Office system. VCM channels allow you to add IP trunking and IP endpoint applications.
IP400 VCM 4 Features
4 channel voice compression module required for IP trunking and IP extensions
64ms echo cancellation
Compatibility
Compatible with IP403, IP406 V1, IP406 V2, and IP412 control units
Compatible IP500 and IP500 V2 control units when fitted with Legacy Card Carrier (sold separately; see accessory below); not compatible with IP Office 9.1 or higher