Grandstream Networks HT503 User Manual

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HT503 User Manual
Subscribe for MWI
Default is No. When set to “Yes” a SUBSCRIBE for Message Waiting
Indication will be sent periodically.
Send Anonymous
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.
Anonymous Call
Rejection
Default is No. If set to “Yes”, incoming calls with anonymous Caller ID will
be rejected with a 486 busy message.
Special Feature
Default is Standard. Choose the selection to meet some special
requirements from Softswitch vendors.
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. 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.
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.

Grandstream Networks HT503 Specifications

General

Brand	Grandstream Networks
Model	HT503
Category	Telephone Accessories
Language	English