- Provides (16) VoIP channels when more than the (8) built-in VoIP channels are required- Allows addition of VoIP channels in increments of (16), up to the system maximum of (128)- VoIP channels are used for IP telephones, IP trunks, and IP networking- Additional VoIP channels require VoIP Channel Licenses (see below)- Equipped with gigabit port (RJ45 8-conductor jack)- Installs in dedicated connector on CPU card