Grandstream Networks HT503 User Manual page 40

Subscribe for MWI
Anonymous Call
Rejection
Special Feature
Session Expiration
Min-SE
Caller Request Timer
Callee Request Timer
Force Timer
UAC Specify Refresher
UAS Specify Refresher
Force INVITE
Invite Ring-No-Answer
Timeout
Enable 100rel
Preferred Vocoder
Voice frame per TX
FIRMWARE VERSION 1.0.6.8
[3469]11 - allow dialing special and emergency numbers 311, 411, 611 and 911
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:
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.
As a Callee, select UAC to use caller or proxy server as the refresher, or UAS to use
the phone as the refresher.
Session Timer can be refreshed using INVITE method or UPDATE method. Select
"Yes" to use INVITE method to refresh the session timer.
Default is 40 seconds, the range is between 5 and 300 seconds.
The use of the PRACK (Provisional Acknowledgement) method enables reliability to be
offered to SIP provisional responses (1xx series). This is very important if PSTN inter-
networking is to be supported. A user's request to use reliable provisional responses is
invoked by the 100rel tag which is appended to the value of the required header of
initial signalling messages.
The HT503 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. The first Vocoder is entered by choosing the appropriate
option in "Choice 1". The last Vocoder is entered by choosing the appropriate option in
"Choice 8".
This field contains the number of voice frames to be transmitted in a single packet.
When setting this value, the user should be aware of the requested packet time (used
in SDP message) as a result of configuring this parameter. This parameter is
associated with the first vocoder in the above vocoder Preference List or the actual
used payload type negotiated between the 2 conversation parties at run time.
HT503 USER MANUAL
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