Stephen Technologies Co.,Limited SVP303 SIP / H.323 ip phone user manual
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Set acoustic echo cancellation. The check box’s being ticked off means AEC
is used; while the check box’s being not ticked off means AEC is not used.
7 Input volume of the transmitter
Set input volume of the transmitter and the parameter is set among 0-15.
8 Output volume of the telephone receiver
Set output volume of the telephone receiver and the parameter is set
among 0-31.
9 Output volume of HAND FREE
Set the volume of HAND FREE and the parameter is set among 0-31.
3 Protocol Settings
There are 19 options, which are selected according to the settings. The needed
settings are instructed in details as follows:
1 Protocol: Option of communication protocol can only be effective after service
option is started. Protocol is unnecessary for communication in LAN.
The selection of communication protocol depends on the protocol used by
service provider. There are 4 protocols:
1 h323
2 sip
3 mgcp
4 net2phone
2 Start service: Whether use GK of service provider (Gate Keeper, server, GK).
START SERVICE needs to be selected (ticked) when the phone is
registered at GK for outside calling. In addition, a communication
protocol needs to be selected.
START SERVICE is unnecessary (not ticked) for point-to-point
calling in LAN.
3 Service type: The related service provider is selected according to the service
