Unified express ver 4.1
VIC2 bri s/t card (2 port) when dialpeer is configured to use trunkgroup it fails when trying to place a call, if I configure my dial-peer to use either of the ports on the card it works fine.
I am using the exact same config for trunkgroups, that have worked in the past, the only difference was that the card that worked with trunkgroups was VIC 2 bri NT/TE, does that make any difference?
VIC-2BRI-S/T-TE is not supported in the 2801. See 6th table in:
I don't know why it actually works in "non-trunkgroup mode" for you, but unfortunately not being officially supported, you won't be able to get help from the TAC for this case. So using the correct part is probably the only solution.
Hope this helps, please rate post if it does!