IP Phone User's Manual

GXV3140 USER MANUAL www.grandstream.com
SOFTWARE VERSION 1.0.0.44 [e-mail]
Enable 100rel Obtains a SIP temporary response (1xx) using PRACK method in order to
support the PSTN network. Request for a reliable temporary response with
100rel tag added to the first message request header.
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.
SIP Transport Selects the SIP transport method. There are three types: TCP, UDP and TLS.
Symmetric RTP Selects whether or not 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.
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 5 different Vocoders: including G.711(a/μ)
（PCMU/PCMA）,GSM,G726-32k,G.723.1,G.729A/B and iLBC
When this has been configured, the system will select the preferred vocoder
from the list and the same order is sent with the SDP messages.
The user can change the preferred vocoder priority order by toggling with the up
and down buttons. It is recommended to use the default setting “PCMU”; if other