Calls to and from IP devices can require conversion to the audio codec format being used by the IP device. In the IP Office this conversion is done by voice compression channels. These support the common IP audio codecs G711, G723 and G729a. For the IP Office 400 control units, channels can be added by fitting Avaya IP Office 400 VCM Cards.

IP400 Voice Compression Modules (VCM)

IP500 Voice Compression Modules (VCM)
Avaya IP400/500 VCM Expansion Kit - 4 Channel (700359854)

Avaya IP400/500 VCM Expansion Kit - 4 Channel (700359854) The Avaya VCM Expansion Kit will provide users up to 4 channels for IP400/500. Voice Compression...

Avaya IP400/500 VCM Expansion Kit - 4 Channel (700359854) The Avaya VCM Expansion Kit will provid...

In Stock
IP500 Voice Compression Modules (VCM)
Avaya IP400/500 VCM Expansion Kit - 5 Channel (700185119)

Avaya IP400/500 VCM Expansion Kit - 5 Channel (700185119) The Avaya voice compression module will provide users with up to five channels. This VCM is...

Avaya IP400/500 VCM Expansion Kit - 5 Channel (700185119) The Avaya voice compression module will...

In Stock
IP500 Voice Compression Modules (VCM)
Avaya IP400/500 VCM Expansion Kit - 8 Channel (700359862)

Avaya IP400/500 VCM Expansion Kit - 8 Channel (700359862) The Avaya voice compression module will provide users with up to eight channels. This VCM is...

Avaya IP400/500 VCM Expansion Kit - 8 Channel (700359862) The Avaya voice compression module will...

In Stock
$105.99
IP500 Voice Compression Modules (VCM)
Avaya IP400/500 VCM Expansion Kit - 10 Channel (700185127)

Avaya IP400/500 VCM Expansion Kit - 10 Channel (700185127) The Avaya voice compression module will provide users with up to 10 channels. This VCM is...

Avaya IP400/500 VCM Expansion Kit - 10 Channel (700185127) The Avaya voice compression module wil...

In Stock
$118.00
IP500 Voice Compression Modules (VCM)
Avaya IP400/500 VCM Expansion Kit - 16 Channel (700359870)

Avaya IP400/500 VCM Expansion Kit - 16 Channel (700359870) The Avaya voice compression module will provide users with up to 16 channels. This VCM is...

Avaya IP400/500 VCM Expansion Kit - 16 Channel (700359870) The Avaya voice compression module wil...

In Stock
$128.99
IP500 Voice Compression Modules (VCM)
Avaya IP400/500 VCM Expansion Kit - 20 Channel (700185135)

Avaya IP400/500 VCM Expansion Kit - 20 Channel (700185135) The Avaya voice compression module will provide users with up to 20 channels. This vcm is...

Avaya IP400/500 VCM Expansion Kit - 20 Channel (700185135) The Avaya voice compression module wil...

In Stock
$338.99
IP500 Voice Compression Modules (VCM)
Avaya IP400/500 VCM Expansion Kit - 24 Channel (700359888)

Avaya IP400/500 VCM Expansion Kit - 24 Channel (700359888) The Avaya voice compression module will provide users with up to 24 channels. This VCM is...

Avaya IP400/500 VCM Expansion Kit - 24 Channel (700359888) The Avaya voice compression module wil...

In Stock
$377.99
IP500 Voice Compression Modules (VCM)
Avaya IP400/500 VCM Expansion Kit - 30 Channel (700293939)

Avaya IP400/500 VCM Expansion Kit - 30 Channel (700293939) The Avaya voice compression module will provide users with up to 30 channels. This VCM is...

Avaya IP400/500 VCM Expansion Kit - 30 Channel (700293939) The Avaya voice compression module wil...

In Stock
$395.99