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MGC Manager User’s Guide
A-13
SIP Failure (cont.) SIP client error 481 The endpoint sent a SIP
Client Error 481 (Call/
Transaction Does Not
Exist) response.
SIP client error 482 The endpoint sent a SIP
Client Error 482 (Loop
Detected) response.
SIP client error 483 The endpoint sent a SIP
Client Error 483 (Too
Many Hops) response.
SIP client error 484 The endpoint sent a SIP
Client Error 484
(Address Incomplete)
response.
The server received a
request with a To
address or Request-URI
that was incomplete.
SIP client error 485 The endpoint sent a SIP
Client Error 485
(Ambiguous) response.
The address provided in
the request (Request-
URI) was ambiguous.
SIP client error 488 The endpoint sent a SIP
Client Error 488 (Not
Acceptable Here)
response.
SIP forbidden The SIP server rejected
the request.
The server understood
the request, but is
refusing to fulfill it.
Table A-1: Primary Disconnection Reasons (Continued)
Category Cause Message Description