NEC Univerge SV9100 Manual page 350

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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:

With SIP Trunk E.164 Support enabled, the SIP call can be displayed once dialed as:

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:

System Availability

Number dialed = 00441202223344

Request-URI: Invite sip: 00441202223344@172.16.18.100 SIP/2.0

Request-URI: Invite sip:+441202223344@172.16.18.100 SIP/2.0

P-Asserted Identity

P-Preferred Identity

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

SIP Trunking