433
SIP
433 Anonymity Disallowed
The request has been rejected because the server policy requires caller identification and the request was anonymous.
当您看到此代码时
When calling with caller ID suppressed (anonymous) to a server or destination that requires caller identification.
如何修复
Remove the Privacy header or include proper caller identification. Some networks require valid From header identity.
与之对比
指南
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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Request Method (HTTP Verb)
TLS Handshake
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TCP/IP
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VoIP (Voice over IP)
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TLS Versions