Grandstream Networks GXW410X

Grandstream Networks, Inc. GXW410x User Manual Page 27 of 35

Firmware Version 1.3.4.13 Last Updated: 3/2012

Session Expiration Grandstream implemented SIP Session Timer. The session timer extension enables SIP

sessions to be periodically “refreshed” via a SIP request (UPDATE, or re-INVITE. Once the

session interval expires, if there is no refresh via a UPDATE or re-INVITE message, the

session will be terminated. Session Expiration is the time (in seconds) at which the session

is considered timed out, if no successful session refresh transaction occurs beforehand. The

default value is 180 seconds.

Min-SE The minimum session expiration (in seconds). The default value is 90 seconds.

Caller Request

Timer If selecting “Yes” the phone will use session timer when it makes outbound calls if remote

party supports session timer.

Callee Request

Timer If selecting “Yes” the phone will use session timer when it receives inbound calls with session

timer request.

Force Time

If selecting “Yes” the phone will use session timer even if the remote party does not support

this feature. Selecting “No” will allow the phone to enable session timer only when the remote

party support this feature. To turn off Session Timer, select “No” for Caller Request Timer,

Callee Request Timer, and Force Timer.

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 (Provision al Ackno wledgment) method enables reliability to be offered

to SIP provisional responses (1xx series). This is very important if PSTN inter-networking is

to be supported. A user’s request to use reliable provisional responses is invoked by the

100rel tag which is appended to the value of the required header of initial signalling

messages.

Refe

-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.

INVITE Ring-no-

answer Timeout In case incoming call has arrived from PSTN to VoIP and INVITE message was generated by

GXW device, the call will be disconnected after preconfigured timeout if not answered by

VoIP extension.

Accept INVITE

from Proxy Only Default is YES. The device will authenticate and accept only incoming INVITE messages

from the peered SIP server.

Preferred Vocode

The GXW410x supports up to 5 different Vocoder types including G.711 A-/U-law, GSM,

G.723.1, G.729A/B. The user can configure Vocoders in a preference list that will be

included with the same preference order in SDP message. The first Vocoder in this list can

be entered by choosing the appropriate option in “Choice 1”. Similarly, the last Vocoder in

this list can be entered by choosing the appropriate option in “Choice 8”.

Special Feature Default is Standard. Choose the selection to meet some special requirements from Soft

Switch vendors like Nortel, Broadsoft, etc.