Problem description:
1. Background:
Extension B -- U1981 in B -- SIP trunk -- U1981 in A -- Extension A -- PSTN (The CFNR service is configured on the SIP server U1981 for extension A and the call is forwarded to the mobile number of extension A.)
When extension B calls extension A's short number (local call), extension B hears the announcement "Sorry you are not allowed to make this call, please contact System Administrator", and the call is automatically released.
Processing procedure:
step 1:
According to the announcement content, the cause may be that the call is not authorized.
In this case, call rights involve the following:
1. SIP user A has the call forwarding service rights and PSTN outgoing call rights. (The common and default users have only the inter and local rights, but do not have the DDD rights.) Users with advanced permissions and special effects permissions have the inter, local, and DDD permissions.
2. The SIP trunk link between the U1981 at site A and the U1981 at site B is used. That is, the trunk group must have the DDD permission except the inter&local permission.
step 2:
The check result shows that the trunk link XXX of PBXs A and B does not have the DDD permission. The trunk group number XXX can be found through the interconnection prefix.
Run the following command to grant the DDD permission to the trunk group on the LMT: config modify trunkgroup no XXX outgoingright inter&local&DDD
Test the call again. The fault is rectified.
Root cause:
The trunk link XXX of PBXs A and B does not have the DDD permission. The trunk group number XXX can be found based on the interconnection prefix.
Solution:
Run the following command to grant the DDD permission to the trunk group on the LMT: config modify trunkgroup no XXX outgoingright inter&local&DDD
