NEC UNIVERGE SV9100 Manual page 115
Voice over ip
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Also See for UNIVERGE SV9100:
- Features and specifications (1403 pages) ,
- Programming manual (954 pages) ,
- Manual (766 pages)
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T.38 Fax Relay
Video Support*
* 3 Please refer to the SIP Video section below.
Conditions
The above list of features are supported by the system for SIP extensions, however, this does not mean the
device will work for all of these features.
The SIP extension certificate confirms which features are supported in Peer to Peer mode and non Peer to
Peer mode for the specific device.
Operation
The operation for each feature is as described in each specific feature section.
Doorphone
To allow the SIP extension to operate the door lock PRG90-03-01 needs to be enabled. This command can
only be accessed via handset programming.
A SIP extension can belong to a Doorphone ring group but the operation differs slightly from that of an SLT
telephone. The operation has been tested using an NEC IP DECT handset:
Doorphone call button is pressed
IP DECT handset rings
IP DECT user answers the Doorphone
IP DECT user and the Doorphone user speak
IP DECT user presses 'R' (green button) to operate the lock
IP DECT user presses 'R' again to speak to the Doorphone user
IP DECT user hangs up.
Note: If the IP DECT user does not press the 'R' button for the second time before hanging up the call, the
Doorphone may recall back to the IP DECT user.
Peer to Peer
By default if two IP extensions are on an internal call together, the RTP will be sent directly between the two
endpoints. This reduces the DSP consumption, reduces delay on the VoIP packets and increases voice
quality on the call.
There may be instances where this operation is not supported. May be the SIP terminal does not support
this operation or the customers network may not allow it. If this is the case it is possible to disable Peer to
Peer for SIP extensions. Use the Peer to Peer option in Easy Edit
Extensions/SIP Terminal Settings (PRG15-05-50)
DTMF Relay (RFC2833)
By default any DTMF tones transmitted from a SIP extension will be sent as audio tones in the speech path.
It is possible that these tones can be misinterpreted by the receiving device because of packet loss or
errors on the IP network.
DTMF relay is a way of converting the DTMF tone into a signal then sending the signal across the IP
network instead of the actual tone. To use this feature both devices (SV9100 and the SIP device) must
support DTMF relay (RFC2833).
To enable this feature set the 'DTMF Relay Mode' option to 'RFC2833' in Easy Edit –
Extensions/SIP Extensions/SIP Terminal DTMF Settings (PRG84-34)
3
Part 2: VoIP Manual
– Advanced Items/VoIP/Extensions/SIP
Advanced Items/VoIP/
115
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Troubleshooting
