We recently established an Access Tandem we will call ULT. We are processing TRS calls between an SS7 Trunk Group from a customer who can manipulate the TNS field in the message to establish carrier of choice. When the call is sent to ULT it is being rejected for no circuit available. Decoding the message received form the customer we see all the correct features such as CIC and Network Circuit ID that the local provider is requesting.This is being presented in the 48th Octet. HOWEVER the Local provider of this AT is stating they are not receiving the Circuit ID. When we examine the ISUP message we only see half of the message. I believe that this is caused by the call Originating and Terminating to the same OPC. Does anyone have an opinion on any of this? We are "sending" the appropriate OZZ/Circuit ID. Do we need to reserve? Calls terminating into the same switch and TF calls work just fine.
18 years ago