Manual

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28430414RequestURItoolong.Errortype:NON_RETRYABLE.
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28431 415 Unsupported media type: The media gateway does not support G.711 μlaw or does not               
supportT.38.Errortype:NON_RETRYABLE.
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28432416UnsupportedURIscheme.Errortype:NON_RETRYABLE.
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28436420Badextension.Errortype:NON_RETRYABLE.
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28437421Extensionrequired.Errortype:NON_RETRYABLE.
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28439423Intervaltoobrief.Errortype:NON_RETRYABLE.
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28496 480 Temporarily Unavailable: The gateway rejected the initial INVITE with a generic “480             
Temporarilyunavailable”anddidnotincludeanadditionalQ.850causecode.Errortype:BUSY.
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28497481Callortransactiondoesnotexist.Errortype:NON_RETRYABLE.
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28498482Loopdetected.Errortype:NON_RETRYABLE.
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28499483Toomanyhops.Errortype:NON_RETRYABLE.
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28500484Addressincomplete.Errortype:NON_RETRYABLE.
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28501485Ambiguous.Errortype:NON_RETRYABLE.
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28502 486 Busy here: The gateway rejected the initial INVITE with a generic “486 Busy here,” and                
didnotincludeanadditionalQ.850causecode.Errortype:BUSY.
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28503 487 Request terminated: An inprogress but not yet answered call was terminated by a BYE               
or CANCEL. This can be caused by the gateway having a shorter noanswer timeout than IPFax, and so                 
terminatesthecall.(Seedial_wait;thisisnormally45seconds.)Errortype:NON_RETRYABLE.
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28504 488 Not acceptable here: The gateway does not support either the G.711 μlaw or T.38               
codec,orhasrejectedthecallforsomeotherreason.Errortype:NON_RETRYABLE.
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28507491Requestpending.Errortype:NON_RETRYABLE.
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28509493Undecipherable.Errortype:NON_RETRYABLE.
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4.1.928672–28685:SIP500Messages
These are error codes returned by the media gateway or fax service. The second number listed is                
theequivalentstandardSIPcode.Errortype:NON_RETRYABLE.
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28672 500 Server Internal Error: The gateway encountered an unexpected condition that           
preventeditfromfulfillingtherequest.Errortype:NON_RETRYABLE.
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28673501Notimplemented.Errortype:NON_RETRYABLE.
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28674502Badgateway.Errortype:NON_RETRYABLE.
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28675 503 Service Unavailable: The gateway rejected the initial INVITE with a generic “503             
Service unavailable.” This could be due to lack of system resources, overload, or administrative             
maintenance.Errortype:BUSY.
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28676504Servertimeout.Errortype:NON_RETRYABLE.
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28677505Versionnotsupported.Errortype:NON_RETRYABLE.
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28685513Messagetoolarge.Errortype:NON_RETRYABLE.
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ProprietaryFaxBack,Inc.2014 155