SIP 200 OK vs 300 Multiple Choices
SIP 200 (OK) is a 2xx Success response, while 300 (Multiple Choices) is a 3xx Redirection response. 200 indicates that the request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully. In contrast, 300 means that the address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
Açıklama
The request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully.
Gördüğünüzde
When a call is answered (INVITE 200 OK), a registration succeeds (REGISTER 200 OK), or a subscription is accepted (SUBSCRIBE 200 OK).
Nasıl Düzeltilir
No fix needed — this is a success response. The caller should send an ACK to complete the three-way handshake for INVITE transactions.
Açıklama
The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
Gördüğünüzde
When a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
Nasıl Düzeltilir
Select one of the provided Contact addresses and resend the request to that specific URI.
Temel Farklar
200 is a 2xx Success response, while 300 is a 3xx Redirection response.
SIP 200: The request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully.
SIP 300: The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
You encounter 200 when when a call is answered (INVITE 200 OK), a registration succeeds (REGISTER 200 OK), or a subscription is accepted (SUBSCRIBE 200 OK).
You encounter 300 when when a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
Hangisini Ne Zaman Kullanmalı
For 200 (OK): No fix needed — this is a success response. The caller should send an ACK to complete the three-way handshake for INVITE transactions. For 300 (Multiple Choices): Select one of the provided Contact addresses and resend the request to that specific URI.