SIP 200 OK vs 600 Busy Everywhere
SIP 200 (OK) is a 2xx Success response, while 600 (Busy Everywhere) is a 6xx Global Failure 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, 600 means that 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.
描述
The request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully.
何时出现
When a call is answered (INVITE 200 OK), a registration succeeds (REGISTER 200 OK), or a subscription is accepted (SUBSCRIBE 200 OK).
如何修复
No fix needed — this is a success response. The caller should send an ACK to complete the three-way handshake for INVITE transactions.
描述
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.
何时出现
When the callee has rejected the call on all devices. No other endpoints should be tried. The user is universally busy.
如何修复
Wait and try again later. No alternative contact points exist. The callee must become available on their own.
主要区别
200 is a 2xx Success response, while 600 is a 6xx Global Failure response.
SIP 200: The request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully.
SIP 600: 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.
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 600 when when the callee has rejected the call on all devices. No other endpoints should be tried. The user is universally busy.
何时使用哪个
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 600 (Busy Everywhere): Wait and try again later. No alternative contact points exist. The callee must become available on their own.