300
SIP
300 Multiple Choices
The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
On this page
When You See This Code
When a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
How to Fix
Select one of the provided Contact addresses and resend the request to that specific URI.
Specification
Compare With
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
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SIP Response Classes
VoIP (Voice over IP)
Presence (SIP)
PBX (Private Branch Exchange)
MFA (Multi-Factor Authentication)
TLS Versions
Frequently Asked Questions
What is SIP 300 Multiple Choices?
The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
When do you see SIP 300 Multiple Choices?
When a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
How to fix SIP 300 Multiple Choices?
Select one of the provided Contact addresses and resend the request to that specific URI.