Grandstream Networks HandyTone-286 User Manual page 18

HandyTone User Manual
Voice Frames
per TX
IP Qos
VLAN Tag
Dial Plan
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 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.
This value contains the dial plan prefix string (typically an ASCII
numeric string). If it is not blank, then this string will be used as a
prefix to the target URI string in the "To" header field of an INVITE
message.
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