Issue 1.0 Spectrum Enterprise
2 SIP Trunk Programming Guide
1.4 Requirements
With the SV9300, a VoIP gateway daughter board is required in addition to
licensing for IP (SIP) trunks.
A minimum of four IP (SIP) trunks are required due to the NEC Communications
Server infrastructure setup.
The system software for the NEC Communications Server should be version
V3.2.1 or higher.
NEC recommends that the requirements and programming are completed with as
much information as possible before scheduling an activation appointment with
your SIP trunk provider.
1.5 Limitations
The following limitations apply:
Faxing is not supported for Spectrum Enterprise SIP trunks, it is
recommended to have analog lines for faxing and modem connectivity.
SIP diversion header is not supported – Call forwarding to 8xx numbers
SIP Privacy – Cannot mark the calling party number as private or
restricted
Secondary SIP server for failover is not supported
Spectrum Enterprise SIP trunks are supported as registered and
non-registered.
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