606
SIP
606 Not Acceptable
The user's agent was contacted successfully but some aspects of the session description (SDP) are not acceptable. Unlike 488, this is a global failure — no other server can satisfy this request.
Quand vous voyez ce code
When the callee definitively cannot accept any of the offered media types or codecs. Different from 488 which is location-specific.
Comment résoudre
Check the Warning header or response body for which session parameters are unacceptable. Modify the SDP offer to use compatible codecs and media types.
Spécification
Codes associés
Comparaisons
Comparer avec
Guides
401 Unauthorized vs 403 Forbidden: When to Use Each
Security & Authentication
SIP Response Codes: Understanding VoIP Call Flow
Real-Time Protocols
SIP Call Flow: Understanding Session Setup
Real-Time Protocols
WebRTC Signaling with SIP and WebSocket
Real-Time Protocols
RFC 3261: SIP Protocol Deep Dive
Protocol Deep Dives
TLS 1.3: Faster, Simpler, More Secure
Protocol Deep Dives
Scénarios de débogage
Glossaire
Status Code
Request Method (HTTP Verb)
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Port Number
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TURN (Traversal Using Relays around NAT)
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Codec Negotiation
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PBX (Private Branch Exchange)
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TLS Versions