Grandstream Networks HandyTone-488 User Manual page 25

HandyTone-488 User Manual
Voice Frames per
TX
G723 Rate:
iLBC frame size:
iLBC payload type: This defines payload time for iLBC. Default value is 98. The valid range is
Silence Suppression This controls the silence suppression/VAD feature of G723 and G729. If set to
SIP Registration
Unregister on
Reboot
Layer 3 QoS
Layer 2 QoS
Use DNS SRV:
User ID is Phone
Number
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.
e.g., if the first vocoder is configured as G723 and the "Voice Frames per TX"
is set to be 2, then the "ptime" value in the SDP message of an INVITE request
will be 60ms because each G723 voice frame contains 30ms of audio.
Similarly, if this field is set to be 2 and if the first vocoder chosen is G729 or
G711 or G726, then the "ptime" value in the SDP message of an INVITE
request will be 20ms.
If the configured voice frames per TX exceeds the maximum allowed value, the
HandyTone ATA will use and save the maximum allowed value for the
corresponding first vocoder choice. The maximum value for PCM is 10(x10ms)
frames; for G726, it is 20 (x10ms) frames; for G723, it is 32 (x30ms) frames;
for G729/G728, 64 (x10ms) and 64 (x2.5ms) frames respectively.
This defines the encoding rate for G723 vocoder. By default, 6.3kbps rate is
chosen.
This sets the iLBC size in 20ms or 30ms
between 96 and 127.
"Yes", when a silence is detected, 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.
This parameter controls whether the HandyTone ATA needs to send
REGISTER messages to the proxy server. The default setting is "Yes".
Default is No. If set to yes, the SIP user will be unregistered on reboot.
This field defines the layer 3 QoS parameter which can be the value used for IP
Precedence or Diff-Serv or MPLS. Default value is 48.
This contains the value used for layer 2 VLAN tag. Default setting is
blank.
Default is No. If set to Yes the client will use DNS SRV for server lookup
If the HandyTone ATA has an assigned PSTN telephone number, this field
should be set to "Yes". Otherwise, set it to "No". If "Yes" is set, a
"user=phone" parameter will be attached to the "From" header in SIP request
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Grandstream Networks, Inc.