• Created by user-45924, last modified on 2017-11-15

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SIP Response CodeSIP MeaningISDN Cause CodeISDN Meaning

400

 Bad Request

41

Temporary Failure

401

Unauthorized21Call Rejected
402Payment Required21Call Rejected
403Forbidden21Call Rejected
404Not Found1Unallocated / Unassigned Number
405Method Not Allowed63Service or Option Unavailable
406Not Acceptable79Service / Option Not Implemented
407Proxy Authentication Required21Call Rejected
408Request Timeout102Recovery On Timer Expiry
410Gone22Number Changed (no diagnostic)
413Request Entry Too Long127Interworking Unspecified
414Request URI Too Long127Interworking Unspecified
415Unsupported Media Type79Service / Option Not Implemented
416Unsupported URI Scheme127Interworking Unspecified
420Bad Extension127Interworking Unspecified
421Extension Required127Interworking Unspecified
423Interval Too Brief127Interworking Unspecified
480Temporarily Unavailable18User Not Responding
481Call Transaction Does Not Exist41Temporary Failure
482Loop Detected25Exchange Routing Error
483Too Many Hops25Exchange Routing Error
484Address Incomplete28Invalid Number Format
485Ambiguous1Unallocated / Unassigned Number
486Busy Here17User Busy
500Server Internal Error41Temporary Failure
501Not Implemented79Service / Option Not Implemented
502Bad Gateway38Network Out of Order
503Service Unavailable41Temporary Failure
504Server Timeout102Recovery On Timer Expiry
505Version Not Supported127Interworking Unspecified
513Message Too Long127Interworking Unspecified
600Busy Everywhere17User Busy
603Decline21Decline
604Does Not Exist Anywhere1Unallocated Number
All other codes 31Normal Unspecified
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