Try calling 101 to 107 => works
Try calling 114 to 101 => doesn’t work
Try calling 101 to 114 => works
Capture logs and import it into Sip analyzer:
603 SIP means
The destination does not wish to participate in the call, or cannot do so, and additionally the destination knows there are no alternative destinations (such as a voicemail server) willing to accept the call.
Check services for 101: show subscriber dn 101 type all
See DDS is enabled
DDS means: Do not disturb service, 101 can make outgoing calls but incoming calls to him are restricted.
Solution: Disable DDS using this command: config deactiveservice dn 101 type dds