Ipvs Source Numbering Requirements - NEC SL1100 Adminstrators Manual

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IPVS Source Numbering Requirements

Please note that the following prerequisites must be satisfied for successful deployment:
Any SIP call must present a number with a current registration on the IPVS platform in one or more of
the following headers of the SIP message transmitted by the IP-PBX (listed in order of significance):
1. Diversion
2. P-Asserted-Identity
3. Remote-Party-Id
4. From
If you see a 604 SIP message back from IPVS then the device is not presenting the correct CLI to the
IPVS platform or the account is not present on the IPVS platform.
SIP Trunking DDI Users must have an active Public Number (DDI) on the IPVS Platform.
Legacy PBX users/extensions
the SIP Trunk Group number or 'Bearer Number' as their outbound CLI for calls to be able to traverse
the IPVS platform.
Issue 1: 2012© British Telecommunications plc
(who do not have a SIP Trunking User account provisioned)
IN STRICTEST CONFIDENCE
must present
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IN STRICTEST CONFIDENCE