Issue 2.0
6-4 SIP Trunking
SECTION 2 SIP TRUNK E.164 SUPPORT
Description
With SIP Trunk E.164 Support enabled, the PBX is able to support SIP configurations
where the number presentation within the SIP messages is formatted using the
E.164 international numbering scheme. Specifically the system is able to handle the
+ digit when required as the International Access Code.
For example, a normal international SIP call can be dialed and displayed as follows:
Number dialed = 00441202223344
Request-URI: Invite sip: 00441202223344@172.16.18.100 SIP/2.0
With SIP Trunk E.164 Support enabled, the SIP call can be displayed once dialed as:
Request-URI: Invite sip:+441202223344@172.16.18.100 SIP/2.0
This display is a requirement of certain SIP ITSPs (Internet Telephony Service
Providers) and may require that PBX handle these calls and modify any SIP
messages to the correct format accordingly.
This feature uses the following SIP header fields:
Request-URI
To
From
P-Asserted Identity
P-Preferred Identity
Conditions
E.164 support is applied on the SIP trunk interface.
E.164 is supported for all carrier choices (Program 10-29-14).
Netlink multi-carrier support uses E.164 support across all carrier
configurations at the secondary nodes.
Default Settings
Disabled
System Availability
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