Predefined source lines to filter calls from local users.
- SNMP ID:
 - 2.33.4.5.1
 - Console path:
 - Setup > Voice-Call-Manager > Lines > Source-Filters
 - Possible values:
 - USER.ANALOG
 - For calls from a local analog subscriber.
 - USER.ISDN
 - For calls from a local ISDN subscriber.
 - USER.SIP
 - For calls from a local SIP subscriber.
 - USER#
 - For calls from a local subscriber in general.
 
- Default:
 - USER.ANALOG
 
- USER.ISDN
 
- USER.SIP
 
- USER#