Section 7 Sip Trunk E.164 Support - NEC Sl2100 Networking Manual

ISSUE 1.0
S 7 SIP TRUNK E.164 SUPPORT
ECTION
7.1 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:
To
From
P-Asserted Identity
P-Preferred Identity
7.1.1 Condition
• 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.
7.1.2 Default Settings
Disabled
7.2 System Availability
7.2.1 Terminals
All Multiline Terminals
7.2.2 Trunks
IP SIP
7.2.3 Required Component(s)
IP7( )-CPU-C1
Networking Manual
SL2100
7-17