Sip Trunk E.164 Support - NEC Univerge SV8100 Features And Specifications Manual

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UNIVERGE SV8100

System Availability

All Multiline Terminals

Required Component(s)

SIP Trunk E.164 Support

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:

P-Asserted Identity

P-Preferred Identity

IP Trunk – (SIP) Session Initiation Protocol