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Allow Auto Answer by
Call-Info
Refer-To Use Target
Contact
Transfer on Conference
Hangup
Check SIP User ID for
Incoming INVITE
Preferred Vocoder
SRTP Mode
Symmetric RTP
Silence Suppression
Grandstream Networks, Inc.
If the Call-Info header contains answer-after=0, the call be answered automatically.
This fields need to be set to Yes if users would like to have the phone to be
paged/intercom.
Default is "No". If set to
uses the transferred target's Contact header information.
Defines whether or not the call is transferred to the other party if the initiator of the
conference hangs up. Default is "No".
Check the SIP User ID in Request URI. If they don't match, the call will be rejected.
GXP21xx supports up to 7 different Vocoder types including G.711(a/µ) (also known
as PCMU/PCMA), G.723.1, G.729A/B, G.726-32, iLBC, G.722 (wide-band).
Configure Vocoders in a preference list that is included with the same preference
order in SDP message. Enter the first Vocoder in this list by choosing the
appropriate option in "Choice 1". Similarly, enter the last Vocoder in this list by
choosing the appropriate option in "Choice 8".
Enable SRTP mode based on selection. Default is "No".
Selects whether or not symmetric RTP is supported.
This controls the silence suppression/VAD feature of the audio codec G.723 and
G.729. If set to "Yes", when silence is detected, a small quantity of VAD packets
(instead of audio packets) will be sent during the period of no talking. If set to "No",
this feature is disabled.
GXP21xx User Manual
Firmware version: 1.0.1.110
"Yes",
then for Attended Transfer, the "Refer-To" header
Page 43 of 48
Last Updated: 01/2012
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