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Figure 853 Call route advanced settings page
Table 303 Configuration items
Item Description
Codecs and
Priorities
Codec with the First Priority.
Codec with the Second Priority.
Codec with the Third Priority.
Codec with the Lowest Priority.
DTMF Transmission
Mode
Specify DTMF transmission mode:
• In-band Transmission.
• Out-of-band Transmission.
• RFC2833: Adopt DTMF named telephone event (NTE) transmission mode.
When you adopt this transmission mode, you can configure the payload type
field in RTP packets.
By default, the value of the NTE payload type field is 101.
Route Selection
Priority
Set the priority of the call route. The smaller the value, the higher the priority.
VAD
The VAD discriminates between silence and speech on a voice connection
according to their energies. VAD reduces the bandwidth requirements of a voice
connection by not generating traffic during periods of silence in an active voice
connection. Speech signals are generated and transmitted only when an active
voice segment is detected. Researches show that VAD can save the transmission
bandwidth by 50%.
• Enable.
• Disable.
By default, VAD is disabled.
Select the Route(s)
Select the boxes of desired call routes, and then click the
Apply to Selected
Route(s)
button to apply the above advanced settings to the selected call routes.
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