Trunks (PJSIP)

• Name – Friendly name, e.g. VoxCarrier ZA
• Transport – e.g. transport-udp
• CallerID – e.g. "Main Line" <0111234567>
• From Domain / User – As required by the ITSP
• Identify By – username (typical) or ip
• DTMF Mode – rfc4733 (safe default)
• NAT – auto_contact if behind NAT
• Codecs – ulaw, alaw, g729 etc. per ITSP
• Registration – Set registrar host if ITSP requires REGISTER

Inbound Routes

• DID Number – Number delivered by carrier (e.g. 27111234567)
• Destination – Extension / Ring Group / IVR etc.
• CID Match (optional) – Only route if caller matches pattern

Outbound Routes

• Name – e.g. Local SA
• Pattern – Asterisk dial pattern: _0X. (local), _00. (international)
• Strip – Digits to remove from start (e.g. 1 strips a leading 0)
• Prepend – Digits to add first (e.g. 27)
• CallerID Match – Limit to certain callers (e.g. 10XX)
• Trunk Order – CSV of trunks to try (e.g. trunk-vox,trunk-backup)
• Require PIN / PIN Code – Prompt users before dialing
• Emergency – Flag emergency patterns