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Grandstream Networks, Inc. HT503 User Manual Page 32 of 38
Firmware 1.0.4.2 Last Updated: 06/2011
{ ^1900x. | <=1617>[2-9]xxxxxx | 1[2-9]xx[2-9]xxxxxx | 011[2-9]x. | [3469]11 }
Explanation of example rule (reading from left to right):
• ^1900x. - prevents dialing any number started with 1900
• <=1617>[2-9]xxxxxx - allows dialing to local area code (617) numbers by dialing
7 numbers and 1617 area code will be added automatically
• 1[2-9]xx[2-9]xxxxxx |- allows dialing to any US/Canada Number with 11 digits
length
• 011[2-9]x. - allows international calls starting with 011
[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: { [x*]+ }.
Subscribe for MWI Default is No. When set to “Yes” a SUBSCRIBE for Message Waiting Indication will be
sent periodically.
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 Time
r
If selecting “Yes” the phone will use session timer when it makes outbound calls if
remote party supports session timer.
Callee Request Time
r
If selecting “Yes” the phone will use session timer when it receives inbound calls with
session timer request.
Force Time
r
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 Refreshe
r
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 Refreshe
r
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.
Invite Ring-No-Answer
Timeout
Default is 40 seconds, the range is between 5 and 300 seconds.
Preferred Vocode
r
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”.
G723 Rate:
This defines the encoding rate for G723 vocoder. Default setting is 6.3kbps.
iLBC Frame Size:
This sets the iLBC size in 20ms or 30ms