SIP Trunk E.164 CLIP Enhancement
Description
With the SIP Trunk E.164 CLIP Enhancement enabled, when an incoming SIP call from an external
ITSP is presented at the system with a “+” in the From header field as the international access code, it
is recognized and displayed as an international call at the terminal display and also logged in the
terminals incoming caller history, allowing any outbound calls made from a multiline terminals caller
history possible using this numbering scheme.
This presentation can be a requirement of certain SIP ITSPs (Internet Telephony Service Providers) so
it is necessary the PBX can handle these calls and modify any SIP messages to the correct format
accordingly.
Conditions
• E.164 Enhancement is applied for the SIP trunk interface.
• Outgoing call from caller history of incoming calls is only possible from multiline terminals.
Default Settings
Disabled
System Availability
Terminals
Multiline Terminals
Trunks
IP SIP
Required Component(s)
• VoIPDB-C1
• IP Trunk License
Related Features
• E.164 Support
• F-Route
SL2100
ISSUE 1.0
1-778
SIP Trunk E.164 CLIP Enhancement
S
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