Grandstream Networks GXW40XX User Manual page 33

Subscribe for MWI Default is No. When set to "Yes" a SUBSCRIBE for Message Waiting Indication will be
sent periodically.
Send Anonymous If this parameter is set to "Yes", the "From" header along with Privacy and
P_Asserted_Identity headers in outgoing INVITE message will be set to anonymous,
blocking Caller ID.
Anonymous Call Default is No. If set to Yes, incoming calls with anonymous Caller ID will be rejected with
Rejection
486 Busy message.
Special Feature Default is Standard. Choose the selection to meet some special requirements from
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 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 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
Refresher proxy 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.
Send Re-INVITE After Default is No, If set to "Yes", device will send an INVITE with audio vocoders upon
Fax
completition of Fax to continue session in audio only.
Use First Matching Default is No. If set to "Yes", device will include only the first match vocoder in its 200OK
Vocoder in 200OK
response, otherwise it will include all match vocoders in same order received in INVITE.
SDP
Preferred Vocoder
The GXW40XX 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.
appropriate option in "Choice 1".
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
Grandstream Networks, Inc.
www.InternetVoipPhone.co.uk | sales@internetvoipphone.co.uk | 0800 088 4846
The first Vocoder is entered by choosing the
The last Vocoder is entered by choosing the
GXW40XX User Manual
Firmware 1.0.4.2
Page 33 of 38
Last Updated: 06/2011