This card provides voice compression channels for use with VoIP calls, SIP trunks and IP-based voice networking. The actual number of channels provided is controlled by the VCM Channels licenses entered into the IP Office 500 system configuration.

Each VCM card has 4 VCM channels enabled by default. Further channels can be enabled up to the maximum (32 or 64) through adding one or more licenses (available in 4, 8, 16, 28 and 60 channel increments). The maximum number of voice compression channels supported, using IP Office 500 VCM base cards and / or IP400 VCM cards on IP Office 500 Legacy Card Carriers, is 128. The card can be fitted with an IP Office 500 daughter trunk card, which uses the 4 RJ45 ports for trunk connections.

• This card accepts one IP Office 500 trunk daughter card of any type.
• Maximum of 2 VCM Cards in a IP Office 500 Control Unit