Chris,
The t_check_status("486") does exactly what you want.
Zeus
an example for a creating a header when diverting to voicemail for a negative response. To support the draft http://www.ietf.org/internet-drafts/draft-levy-sip-diversion-0 8.txt a reason (e.g. 486 busy here) would need to be understood in order to
support
the diversion header. From the example and the ser documentation, it
appears as if
there is no current method to detect exactly which 4xx response was
returned. Is my
statement correct?