Appendix A: Disconnection Causes
A-10
SIP Failure (cont.) SIP capabilities don't
match The remote device
capabilities are not
compatible with the
conference settings.
SIP card rejected
channels The IP card could not
open the media
channels.
SIP client error 400 The endpoint sent a SIP
Client Error 400 (Bad
Request) response.
The request could not
be understood due to
malformed syntax.
SIP client error 402 The endpoint sent a SIP
Client Error 402
(Payment Required)
response.
SIP client error 405 The endpoint sent a SIP
Client Error 405
(Method Not Allowed)
response.
The method specified in
the Request-Line is
understood, but not
allowed for the address
identified by the
Request-URI.
Table A-1: Primary Disconnection Reasons (Continued)
Category Cause Message Description