User's Manual

Grandstream Networks, Inc. GXV3140H USER MANUAL Page 45 of 146
FIRMWARE VERSION 1.0.7.2 Updated : 11/2010
or select UAS to use the phone as the refresher.
Force INVITE The Session Timer can be refreshed using the INVITE or UPDATE
methods. Select “Yes” to use the INVITE method to refresh the session
timer
Caller Request Timer The default setting is Yes. If Yes is selected, the phone will use the session
timer when it makes outbound calls if remote party supports session timer.
Callee Request Timer If Yes is selected, the phone will use the session timer when it receives
inbound calls with session timer request.
Force Timer If Yes is selected, the timer will be activated even if the other party does not
support session timers. If No is selected, the timer will be activated only if
the other party supports the timer. To disable the timer, Caller Request
timer, Callee request timer and Force Timer should all be set to No.
Enable 100rel The use of the PRACK (Provisional Acknowledgment) method enables
reliability to SIP provisional responses (1xx series). This is very important in
order to support PSTN internetworking. To invoke a reliable provisional
response, the 100rel tag is appended to the value of the required header of
the initial signaling messages. The default setting is No.
SIP Transport Selects the SIP transport method. There are three types: TCP, UDP and
TLS.
Symmetric RTP Selects whether or not symmetric RTP is supported.
Support SIP Instance ID Selects whether or not SIP Instance ID is supported.
Validate Incoming
Messages
This configuration selects whether or not the incoming messages should be
validated.
SIP T1 Timeout This configures the timeout period for SIP T1. The default setting is 0.5
Seconds.
SIP T2 Interval This configures the time interval for SIP T2. The default setting is 4
seconds.
Remove OBP from route The SIP Extension notifies the SIP server that it is behind a NAT/firewall.
Account/Codec Settings
Enable Video --YES: Accepts all incoming video, this is the default setting;
--NO: video is disabled.
--Enable/Disable during dialing: Dialing time choice to enable/disable video
DTMF Assigns the mechanism to send DTMF. There are three supported modes:
in audio (with DTMF as audio signals), through RTP and through SIP INFO.
DTMF Payload Type Sends DTMF using RFC2833. The default is 101.
Preferred Vocoder This products supports up to 8 different Vocoders: including