I'm having an issue passing caller ID from a PRI to a SIP trunk connected to an IVR. When the ICR rings directly to the IVR it is seeing the inbound caller ID correctly. Problem is, the call needs to first ring a hunt group first. While they are hearing the queued call greeting, I have setup a transfer to the IVR for a callback feature. The IP Office is using the group extension number, instead of the PRI line caller ID when it sends the call to the IVR. The short code I'm using is just 288xx, dial, ., SIP trunk line group ID. The call routes correctly in the IVR. IP Office 500 V2 11.1. Any ideas how to correct? Thanks.