Grandstream Networks HT503 User Manual page 71

Subscribe for MWI
Anonymous Call
Rejection
Special Feature
Session Expiration
Min-SE
Caller Request Timer
Callee Request Timer
Force Timer
UAC Specify
Refresher
Note: In some cases user wishes to dial strings such as *123 to activate
voice mail or other application provided by service provider. In this case *
should be predefined inside dial plan feature and the Dial Plan will be:
{ [x*]+ }.
Default is No. When set to "Yes" a SUBSCRIBE for Message Waiting
Indication will be sent periodically.
Default is No. If set to "Yes", incoming calls with anonymous Caller ID will
be rejected with a 486 busy message.
Default is Standard. Choose the selection to meet some special
requirements from Softswitch vendors.
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.
The minimum session expiration (in seconds). The default value is 90
seconds.
If selecting "Yes" the phone will use session timer when it makes outbound
calls if remote party supports session timer.
If selecting "Yes" the phone will use session timer when it receives inbound
calls with session timer request.
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.
As a Caller, select UAC to use the phone as the refresher, or UAS to use the
Callee or proxy server as the refresher.
HT503 User Manual
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