Grandstream Networks GXV-3000 User Manual page 37

Force Timer
UAC Specify Refresher
UAS Specify Refresher
Force INVITE
Enable 100rel
Account Ring Tone
Send Anonymous
Anonymous Call Rejection Default is NO. If set to YES, anonymous call will be rejected
Refer-To Uses
Target Contact
Auto Answer
Preferred Vocoder
Preferred Video Coder
Choose Video Codec By
Local Preference
Jitter Delay
Grandstream Networks, Inc.
If set to "Yes", the phone will use session timer even if the remote party does not support
this feature. If set to "No", the phone enables the session timer only when the remote party
supports this feature. To turn off Session Timer, select "No".
As a Caller, select UAC to use the phone as the refresher, or UAS to use the Callee or
proxy server as the refresher.
As a Callee, select UAC to use caller or proxy server as the refresher, or UAS to use the
phone as the refresher.
Session Timer can be refreshed using INVITE method or UPDATE method.
Select "Yes" to use INVITE method to refresh the session timer.
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 inter-
networking. To invoke a reliable provisional response, the 100rel tag is appended to the
value of the required header of initial signaling messages.
There are 4 uniquely defined ring tones:
•
1 System Ring Tone: when selected, all calls will ring with system ring tone.
•
3 Customer Ring Tones: when selected, incoming calls from this account will play
selected ring tone.
If this parameter is set to "Yes", the "From" header in outgoing INVITE message will be set
to anonymous, essentially blocking the Caller ID from displaying.
Default is NO. If set to YES,
transferred target's Contact header information.
Default is No. If set to "Yes", GXV-3000 will automatically switch on speaker to answer the
incoming call after a short reminding beep.
If set to "Intercom/Paging" mode, it will answer the call based on the SIP info header sent
from the server/proxy.
The GXV-3000 supports up to 6 different Vocoder types including G.711 A-/U-law (nick-
name PCMU/PCMA), GSM, G.723.1, G.729A/B and G.726-32.
User can configure Vocoders in a preference list that is included with the same preference
order in SDP message. Enter the first Vocoder in this list by choosing the appropriate op-
tion in "Choice 1". Similarly, enter the last Vocoder by choosing the option in "Choice 8".
H.264, H.263 or H.263+. Codec H.264 is recommended.
Default is No.
If it is set to YES, we will choose the video codec using the configured preferred sequence
when we receive an SDP offer.
Select desired Jitter Buffer Delay. Default is Medium. It is using 100, 200 and 400ms to
match the setting of low, medium and high for audio. The video always buffered and played
in synchronize with audio.
Grandstream recommends "High" for a poor network environment.
GXV-3000 User Manual
Firmware 1.1.3.50
then for Attended Transfer, the "Refer-To" header uses the
Page 35 of 54
Updated: 04/2009