The call prefix is a number placed in front of the caller number (CLI; SIP "From:") for all incoming calls. This generates unique telephone numbers for return calls.
- SNMP ID:
- 2.33.4.3.1.4
- Console path:
- Setup > Voice-Call-Manager > Lines > ISDN
- Possible values:
Max. 9 characters from [0-9]
- Default:
- empty
