The following trunks licenses can be used by a IP Office Essential Edition system.
•IP500 Universal PRI (Additional channels)
These licenses are used to enable additional B-channels above the basic 8 on an IP500 PRI-U card. The IP500 PRI-U card supports E1, T1 and E1-R2 PRI modes. The IP Office system supports 8 unlicensed B-channels on each IP500 PRI-U port fitted. Additional B-channels, up to the capacity of ports installed and PRI mode selected require licenses. These additional channels consume licenses based on which additional channels are configured as in-service from port 9 of slot 1 upwards. D-channels are not affected by licensing. The license is available in 2, 8 and 22 channel variants which can be combined for the total number of channels required.
•SIP Trunk Channels
These licenses are used to configure the maximum number of simultaneous SIP trunk calls supported. The licenses are consumed by calls in progress on a SIP channel. For SIP support the system also requires VCM resources from an Combination card. The license is available in 1, 5, 10 and 20 channel variants which can be combined for the total number of channels required.