Grandstream GXW400x User Manual - Manual (Page 52)

FIRMWARE VERSION 1.0.14.1 GXW400X USER MANUAL Page 50 of 60
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
Rejection
Default is No. If set to Yes, incoming calls with anonymous Caller ID will be rejected with
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
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.