Grandstream Networks HT503 User Manual page 60

Subscribe for MWI
Send Anonymous
Anonymous Call
Rejection
Special Feature
Session Expiration
Min-SE
Caller Request Timer
Callee Request Timer
Force Timer
Default is No. When set to "Yes" a SUBSCRIBE for Message Waiting
Indication will be sent periodically.
When set to "Yes", the "From" header along with Privacy and
P_Asserted_Identity headers in outgoing INVITE messages will be set to
anonymous, blocking Caller ID.
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.
HT503 User Manual
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