IP Phone 202 User Manual
with low-bit-rate codec), via RTP (RFC2833), or via SIP INFO.
DTMF Payload
Type
This parameter sets the payload type for DTMF using RFC2833
Send Anonymous
If this parameter is set to “Yes”, the “From” header in outgoing INVITE message will
be set to anonymous, essentially blocking the Caller ID from displaying.
Send Flash Event
This parameter allows users to control whether to send a SIP NOTIFY
message indicating that the phone’s Flash key has been pushed, or just to switch to the
voice channel when users press the Flash key.
Audio Settings:
Audio Settings
Options
Meaning
Preferred Codec
The IPPH 202 supports up to 7 different Codec types including G.711
G.723.1, G.726, G.728, G.729A/B, iLBC. Users can configure Codecs in a preference
list that will be included with the same preference order in SDP message. The first
Codec in this list can be entered by choosing the appropriate option in “Choice 1”.
Similarly, the last Codec in this list can be entered by choosing the appropriate option in
“Choice 7”.
G723 Rate:
This defines the encoding rate for G723 codec. By default, 6.3kbps rate is
chosen.
iLBC Frame Size:
This defines the size of the iLBC codec frame. The default setting is
20ms.
iLBC Payload Type:
This defines payload time for iLBC. Default value is 97.
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