Step 1 Run the show softargu configinfor id 269 command to view the value of software parameter 269. The software parameter has been set to 1. Therefore, the intra-office number is sent to the carrier as the calling number. The first possible cause can be excluded because the intra-office number can make outgoing calls.
Step 2 Compare the SETUP messages for a successful and a failed call.
The first figure shows the SETUP message generated when the intra-office number forwards an incoming call from an outer-office mobile phone number to an outer-office number but the carrier rejects the call. In the Calling party number section, Type of number is National number.
The second figure shows the SETUP message generated when the intra-office number successfully forwards an incoming call from another intra-office number to an outer-office number. In the Calling party number section, Type of number is Subscriber number.
Step 3 Run the config protocol pra officeno x typeofclinumber subscriber command to change the type of the calling number. Incoming calls from outer-office numbers can be successfully forwarded to the specified outer-office number.