Grandstream Networks GXP1450 User Manual page 45

Transfer on Conference
Hangup
Check SIP User ID for
incoming INVITE
Preferred Vocoder
SRTP Mode
Symmetric RTP
Silence Suppression
Voice Frames Per TX
No Key Entry Timeout (s)
Use # as Dial Key
G723 Rate
G.726-32 Packing Mode
iLBC Frame Size
iLBC Payload Type
FIRMWARE VERSION 1.0.4.23
Contact header information for attended transfer. The default setting is
"No".
Defines whether or not the call is transferred to the other party if the
initiator of the conference hangs up. The default setting is "No".
If set to "Yes", SIP User ID will be checked in the Request URI of the
incoming INVITE. If it doesn't match the phone's SIP User ID, the call will
be rejected. The default setting is "No".
7 different vocoder types are supported on the phone, including G.711
U-law (PCMU), G.711 A-law (PCMA), G.723.1, G.729A/B, G.722 (wide
band), iLBC and G72-32. Users can configure vocoders in a preference
list that is included with the same preference order in SDP message.
Enables the SRTP mode based on your selection. The default setting is
"Disabled".
Defines whether symmetric RTP is supported or not. The default setting
is "No".
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. The default setting is
"No".
Configures the number of voice frames transmitted per packet. When
configuring this, it should be noted that the "ptime" value for the SDP will
change with different configurations here. This value is related to the
codec used and the actual frames transmitted during the in payload call.
For end users, it is recommended to use the default setting, as incorrect
settings may influence the audio quality.
Defines the timeout (in seconds) for no key entry. If no key is pressed
after the timeout, the digits will be sent out. The default value is 4
seconds.
Allows users to configure the "#" key as the "Send" key. If set to "Yes",
the "#" key will immediately dial out the input digits. In this case, this key
is essentially equivalent to the "Send" key. If set to "No", the "#" key is
included as part of the dialing string.
Selects encoding rate for G723 codec. The default value is 5.3kbps.
Selects "ITU" or "IETF" for G726-32 packing mode.
Selects iLBC packet frame size. The default value is 30ms.
Specifies iLBC Payload type. The default value is 97. The valid range is
GXP2120/GXP2110/GXP2100/GXP1450 USER MANUAL Page 45 of 69