Phones Connected to the IAD Cannot Make Calls to Numbers Starting with 800

Symptom

Network: IAD-*** softswitch.

Phones connected to the IAD can make calls to other phone numbers except numbers starting with 800.

Possible Cause

The possible cause is that the digitmap does not match.

Solution

                               Step 1     Capture IAD network packets and obtain MGCP packets. Check the digitmap information contained in RQNT messages. The digitmap delivered from the softswitch is 0[2-9]xxxxxx. When the called number 08008302118 is matched to the digitmap, the number 08008302 is reported, which results in the call failure.

                               Step 2     Modify the digitmap delivered by *** softswitch to 0[2-9]xxxxxxXXX.

                               Step 3     Check whether the fault is rectified.

l   If yes, the procedure ends.