Domain of an upstream SIP PBX when the ISDN user is to be logged in as a SIP user. The domain must be configured for a SIP PBX line in order for upstream login to be performed.
SNMP ID: 2.33.3.2.2.7
Telnet path: /Setup/Voice-Call-Manager/User/ISDN-User/Users
Possible Telnet values:
- Max. 63 characters
Default: Blank
Note: Only required when the user registers at an upstream SIP PBX.