600
SIP
600 Busy Everywhere
The callee's end system was contacted successfully but the callee is busy and does not wish to take the call at this time. Unlike 486 (Busy Here), this is a definitive response.
Cuándo verás este código
When the callee has rejected the call on all devices. No other endpoints should be tried. The user is universally busy.
Cómo solucionarlo
Wait and try again later. No alternative contact points exist. The callee must become available on their own.
Especificación
Códigos relacionados
Comparaciones
Comparar con
Guías
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
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Glosario
Status Code
Request Method (HTTP Verb)
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TCP/IP
Port Number
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Socket
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TURN (Traversal Using Relays around NAT)
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SRTP (Secure Real-time Transport Protocol)
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SBC (Session Border Controller)
Codec Negotiation
SIP Response Classes
VoIP (Voice over IP)
Presence (SIP)
PBX (Private Branch Exchange)
MFA (Multi-Factor Authentication)
TLS Versions