NEC SL1000 Features And Specifications Manual page 429

ISSUE 2.0
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.
Below is the full list of SIP header fields used by this feature:
Request-URIToFromP-Asserted IdentityP-Preferred Identity
SIP Trunk E.164 CLIP Enhancement (V2.0 or higher)
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
• A maximum of 16 IP Trunks are supported in the SL1000/SL1100.
• SIP trunks are assigned in increments of two. Please note that if odd port number is set it will use 1
extra port.
• Calling Party Name is not provided for outgoing calls on SIP trunks.
• E.164 support and CLIP Enhancement feature are required for V2.0 software or higher. (V2.0 or
higher)
• E.164 is supported for all carrier choices (PRG 10-29-14). (V2.0 or higher)
• E.164 CLIP feature is only possible from Multiline Terminal. (V2.0 or higher)
• If VAD is Enable, RTP forwarding (PRG 10-26-02) is not running. (V2.0 or higher)
• PRG 84-13-65 applies to system not by each codec. (V2.0 or higher)
• VAD can negotiate by SIP using G.711 or G.729. (V2.0 or higher)
• VBD on SIP is only supported on SLT terminal. (V2.0 or higher)
• When modem signal is detected during a talking, a Codec is changed to VBD Codec.(V2.0 or
higher)
• VBD supports G.711 （PCMU/PCMA) codec. (V2.0 or higher)
• The selection of mode (FAX or VBD) is per terminal. (V2.0 or higher)
Fax Connection may not work properly when it is in VBD Mode.
• VBD supports the one way switching from Voice session to VBD. VBD to Voice session is not
supported. when VBD session is done, the session will be closed. (V2.0 or higher)
• VBD feature is not dependent on Carrier Type (PRG 10-29-14). (V2.0 or higher)
• VBD only supports only when the analog terminal and SIP Trunk is connected to a same system.
(V2.0 or higher)
• When changed into VBD codec, VoIPDB cancels VAD and Echo canceller automatically.
Default Settings
None
Features and Specifications Manual
SL1000/SL1100
1-419
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