Bedienungsanleitung Grandstream GXV-3000 (Seite 37 von 54) (Englisch)

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Grandstream Networks, Inc. GXV-3000 User Manual Page 35 of 54

Firmware 1.1.3.50 Updated: 04/2009

Force Timer

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”.

UAC Specify Refresher

As a Caller, select UAC to use the phone as the refresher, or UAS to use the Callee or

proxy server as the refresher.

UAS Specify Refresher

As a Callee, select UAC to use caller or proxy server as the refresher, or UAS to use the

phone as the refresher.

Force INVITE

Session Timer can be refreshed using INVITE method or UPDATE method.

Select “Yes” to use INVITE method to refresh the session timer.

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 inter-

networking. To invoke a reliable provisional response, the 100rel tag is appended to the

value of the required header of initial signaling messages.

Account Ring Tone 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.

Send Anonymous

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.

Anonymous Call Rejection

Default is NO. If set to YES, anonymous call will be rejected

Refer-To Uses

Target Contact

Default is NO. If set to YES, then for Attended Transfer, the “Refer-To” header uses the

transferred target’s Contact header information.

Auto Answer 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.

Preferred Vocoder

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”.

Preferred Video Coder

H.264, H.263 or H.263+. Codec H.264 is recommended.

Choose Video Codec By

Local Preference

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.

Jitter Delay

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.

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