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Configurable through the configuration files only
Parameter sip use basic
c
odecs
This parameter is used to reduce the codec list size
specified in the SDP portion of the SIP INVITE packet. This
increases compatibility with other vendor products that have
a limit to the length of the codec list they are able to parse.
This parameter overrides the sip customized codec
parameter.
Description
Boolean
Format
0 (disable)
Default Value
0 or1
Range
sip use basic codecs: 1
Example
sip use basic codecs: 0
Configurable through the configuration files only
Parameter sip customized
codecs
This parameter is used to set the codec, packetization rate
(ptime), and silence suppression (Voice Activity Detection)
preference order for all outgoing calls from the IP phone.
This parameter will not be used if the sip use basic codecs
parameter is enabled (1).
Description
Text
Format
(none)
Default Value
Accepted payload values are 0 (G711 u-law), 8 (G711 a-
law)and 18 (G729).
Range
Accepted ptime values are 10, 20, or 30 in milliseconds.
Accepted silsupp values are on or off.
sip customized codec: payload=0;ptime=30;silsupp=on
Example
sip customized codec: payload=0;ptime=30;silsupp=on,
payload=8;ptime=30;silsupp=on,payload=18;ptime=30;silsup
p=on
Configurable through the configuration files only
Parameter sip dial plan
terminator
If set to false (0), the terminator of the local dial plan is ‘#’. If
set to true (1), then the terminator of the dial plan is ‘. ‘
Description
Boolean 0: false, 1: true
Format
0 (false)
Default Value
0 or 1
Range
sip dial plan terminator: 1
Example
SIP 480i IP Phone Admin Guide 31