Installing IP500/IP500 V2 Page 263
15-601042 Issue 28c (19 August 2013)IP Office 9.0
System Components: IP400 Internal Cards
10.8.2 Voice Compression Modules
IP400 VCMs are optional cards that can be installed inside the IP Office control unit. Each VCM provides a number of voice
compression channels , indicated by a number suffix. For example, a VCM 8 has 8 voice compression channels.
· For the IP500 control unit, to use an IP400 Voice Compression Card an IP500 Carrier Card is also required for
each IP400 VCM. For IP500 control units, voice compression channels can also be added using up to 2 IP500 VCM
base cards with VCM licenses .