SMC Networks Barricade SMC7908VoWBRA2 - Manual (Page 115)

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SIP Setting
The following SIP related parameters are configurable.
Parameter Description
SIP Parameters
SIP Listen Port This option allows you to change the default SIP
Listen Port. The default setting is 5060. It is
recommended to leave this value unchanged.
Codec Rate(G723, G729,
G711)
You can select the desired Codec rate. It is
recommended to leave this value unchanged.