I have a MCD 3300 with an existing PRI I have connected a Nursecall system to it via Sip Trunks
I have setup calling between the two units and can place calls between them
When the Nursecall dials 9 + a local call the call routes out the PRI
When the Nurse call Dials 9 + a long distance call it is denied
SMDR shows the 9 being stripped and the 11 digits going out but the call is disconnected with an E code "Calling Error"
There is no toll restriction on the trunks and it is the same outbound route that the MN3300 uses.