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Published Option
p-alcatel-csbu
Default Value: fb=notransfer;dtmf_auto=on
Valid Values: Can be an empty string or a valid SIP header string.
Changes Take Effect: Immediately/session
This parameter specifies the value to be set in the P-Alcatel-CSBU header of the 200OK response
to the initial incoming INVITE, when the request contains this header.
If the parameter value is empty string, no header will be set.
Draft Option
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