Ip Dect - NEC UNIVERGE SV9100 Manual

TCP Connection for SIP Extensions (Release 3)
When a SIP terminal application, such as a smartphone SIP client is used remotely through a
Firewall, we need to have a keep-alive to check it's availability.
If a SIP terminal uses the UDP protocol, then the SIP terminal sends keep-alive. But if TCP protocol
is used, then the system sends keep-alive, and the client application remains idle. This can increase
the performance of the spartphone battery so it can be used for longer.
Whether TCP or UDP is used is determined by the SIP terminal when it sends a REGISTER request
to the SV9100.
Easy Edit – Advanced Items/VoIP/Extensions/SIP Extensions/SIP Terminal Settings
Transport Protocol -
2.5.3

IP DECT

IP DECT
IP DECT is an NEC product that combines the functionality of traditional DECT with the flexibility of the
Standard SIP protocol giving a robust and reliable wireless solution.
The handsets use the traditional DECT protocol to communicate with the DECT Access Points (DAPs) and
the DAPs use the Standard SIP Protocol to communicate with the SV9100.
To run IP DECT extensions the SV9100 must have:
GCD-CP10
GPZ-IPLE
IP DECT License(s).
General Information
IP DECT handsets are seen as Standard SIP extensions by the SV9100 so the registration
process is the same. See the
The SV9100 can support up to 896 IP DECT handsets (license dependant).
One DAP can support upto 25 IP DECT registrations so multiple DAPs may be required even if the
coverage area does not warrant it.
One DAP will support upto 12 simultaneous calls.
This displays the transport protocol. used by the SIP terminal.
Standard SIP Extension
Part 2: VoIP Manual
page for more details.
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(PRG15-05-51)