Grandstream ht-503 ユーザーズマニュアル
Grandstream Networks, Inc.
HT503 User Manual
Page 30 of 37
sent periodically.
Send Anonymous
When set to “Yes”, the “From” header will have value “anonymous”, blocking Caller ID.
Pre-configured account user Id is put in the P-Asserted-Identity field.
Pre-configured account user Id is put in the P-Asserted-Identity field.
Anonymous Call
Rejection
Rejection
Default is No. If set to “Yes”, incoming calls with anonymous Caller ID will be rejected
with a 486 busy message.
with a 486 busy message.
Special Features
Default is Standard. Choose the selection to meet some special requirements from
Softswitch vendors.
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.
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.
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.
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.
To turn off Session Timer, select “No” for Caller Request Timer, Callee Request Timer,
and Force Timer.
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 Refresher
As a Caller, select UAC to use the phone as the refresher, or UAS to use the Callee or
proxy server as the refresher.
proxy server as the refresher.
UAS Specify Refresher
As a Callee, select UAC to use caller or proxy server as the refresher, or UAS to use
the phone as the refresher.
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.
“Yes” to use INVITE method to refresh the session timer.
Preferred Vocoder
The HT503 supports 5 different Vocoder types including
1. G.711 A/µ law, (Displayed as PCMA/PCMU)
2. G.723.1,
2. G.723.1,
3. G.726 (Supports bit rates 16, 24, 32, and 40)
4. G.729A/B/E,
4. G.729A/B/E,
5. iLBC
Users can configure Vocoders in a preference list that will be included with the same
preference order in SDP message.
preference order in SDP message.
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
iLBC Payload Type
This defines the payload type for iLBC. Default value is 97. The valid range is between
96 and 127.
96 and 127.
G726-16 Payload
Defines payload type for G726-16. Default value is 100. Range is from 96 to 127.
G726-24 Payload Type
Defines payload type for G726-24. Default value is 99. Range is from 96 to 127.
G726-40 Payload Type
Defines payload type for G726-40. Default value is 103. Range is from 96 to 127.
G729E Payload Type
Defines payload type for G729E. Default value is 102. Range is from 96 to 127
VAD
Default is No. VAD allows detecting the absence of audio and conserves bandwidth by
preventing the transmission of “silent packets” over the network.
preventing the transmission of “silent packets” over the network.
Symmetric RTP
Default is No. When set to “Yes” the device will change the destination to send RTP
packets to the source IP address and port of the inbound RTP packet last received by
the device.
packets to the source IP address and port of the inbound RTP packet last received by
the device.
Fax Mode
T.38 (Auto Detect) FoIP by default, or fax Pass-Through (must use PCMU/PCMA)
Firmware 1.0.0.9
Last Updated: 9/2007