Grandstream Networks GXW400x User Manual page 29

Special Feature Default is Standard.
Softswitch vendors. Example of vendors - CBCOM, RNK.
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. When 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 If selecting "Yes" the phone will use session timer when it makes outbound calls if remote
Timer party supports session timer.
Callee Request If selecting "Yes" the phone will use session timer when it receives inbound calls with session
Timer timer request.
Force Timer 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 As a Caller, select UAC to use the phone as the refresher, or UAS to use the Callee or proxy
Refresher server as the refresher.
UAS Specify As a Callee, select UAC to use caller or proxy server as the refresher, or UAS to use the
Refresher
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.
Preferred Vocoder The GXW400x supports up to 5 different Vocoder types including G.711 A-/U-law, G.726
(Supports bit rates 16, 24, 32 and 40), G.723.1, G.729A/B/E and iLBC. The user can
configure Vocoders in a preference list that will be included with the same preference order in
SDP message. The first Vocoder is entered by choosing the appropriate option in "Choice
1". The last Vocoder is entered by choosing the appropriate option in "Choice 8".
G723 Rate Defines the encoding rate for G.723 vocoder. By default, 6.3kbps rate is chosen.
iLBC Frame Size Sets the iLBC frame size in 20ms or 30ms
iLBC Payload type Default value is 97. Defines payload type for iLBC. The valid range is between 96 and 127.
G726-16 Payload Default value is 98. Range is from 96 to 127.
type
G726 - 24 Payload Default value is 99. Range is from 96 to 127.
type
G726 - 32 Payload Default value is 100. Range is from 96 to 127.
type
G726 - 40 Payload Default value is 103. Range is from 96 to 127.
type
G729E payload Default value is 102. Range is from 96 to 127.
type
Grandstream Networks, Inc.
Choose the selection to meet some special requirements from
GXW400x User Manual
Firmware 1.0.0.67
Page 29 of 35
Last Updated: 10/2007