Polycom RealPresence 1800 Administration Manual page 327

Disconnection Cause Values
Value Call Disconnection Cause
255 SIP remote cancelled call
256 SIP bad status
257 SIP remote stopped responding
258 SIP remote unreachable
259 SIP transport error
260 SIP bad name
261 SIP trans error TCP invite
300 SIP redirection 300
301 SIP moved permanently
302 SIP moved temporarily
305 SIP redirection 305
380 SIP redirection 380
400 SIP client error 400
401 SIP unauthorized
402 SIP client error 402
403 SIP forbidden
404 SIP not found
405 SIP client error 405
406 SIP client error 406
407 SIP client error 407
408 SIP request timeout
409 SIP client error 409
410 SIP gone
411 SIP client error 411
413 SIP client error 413
414 SIP client error 414
415 SIP unsupported media type
420 SIP client error 420
480 SIP temporarily not available
Polycom, Inc.
Disconnection Causes
306