Parameter: Cause Release Location

Cause release location when ISUP is sending REL automatically.

   *User: User (val=0)
   *Private network LU: Private network serving the local user (val=1)
   *Public network LU: Public network serving the local user (val=2)
   *Transit network: Transit network (val=3)
   *Public network RU: Public network serving the remote user (val=4)
   *Private network RU: Private network serving the remote user (val=5)
   *Local interface: Local interface (val=6)
   *International network: International network (val=7)
   *Network beyond interworking point: Network beyond interworking point (val=10)
   *No info: No information available (val=15)
   *Relay: Relay release location from other leg