Grandstream Networks HANDYTONE 486 - Manual (Page 22)

HandyTone-486 User Manual Grandstream Networks, Inc.
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G723 Rate: This defines the encoding rate for G723 codec. By default, 6.3kbps rate is chosen.
iLBC frame size: This sets the iLBC packet frame size in 20ms or 30ms. Default is 20ms. For Asterisk PBX,
30ms might need to be set.
iLBC payload type: This defines payload time for iLBC. Default value is 98. The valid range is between 96 and
127. For Asterisk PBX, 97 might need to be set.
Silence Suppression This controls the silence suppression/VAD feature of G723 and G729. If set to “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.
Voice Frames per TX 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 codec in the
above codec Preference List or the actual used payload type negotiated between the 2
conversation parties at run time.
e.g., if the first codec 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 codec
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 codec 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. Please be careful when massage those parameters.
Fax Mode T.38 (Auto Detect) FoIP by default, or Pass-Through (must use codec PCMU/PCMA)
Layer 3 QoS 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.
Layer 2 QoS This contains the value used for layer 2 VLAN tag. Default setting is blank.
Use DNS SRV: Default is No. If set to Yes the client will use DNS SRV to lookup for the server
User ID is Phone
Number
If the HandyTone ATA has an assigned PSTN telephone number,
then this field will 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
SIP Registration This parameter controls whether the HandyTone ATA needs to send REGISTER messages to
the proxy server. The default setting is “Yes”.
Unregister on Reboot Default is No. If set to yes, the SIP user will be unregistered on reboot.
Register Expiration This parameter allows the user to specify the time frequency (in minutes) the HandyTone ATA
will refresh its registration with the specified registrar. The default interval is 60 minutes (or 1
hour). The maximum interval is 65535 minutes (about 45 days).
Early Dial Default is No. Use only if proxy supports 484 response
Dial Plan Prefix Sets the prefix added to each dialed number
No Key Entry timeout Default is 4 seconds. User can short or extend that depends on digits dialed