SIP 204 No Notification vs 580 Precondition Failure
SIP 204 (No Notification) is a 2xx Success response, while 580 (Precondition Failure) is a 5xx Server Failure response. 204 indicates that the request was successful but the server has decided not to send a NOTIFY for this SUBSCRIBE request. In contrast, 580 means that the server is unable or unwilling to meet some of the preconditions specified in the request for resource reservation.
Mô tả
The request was successful but the server has decided not to send a NOTIFY for this SUBSCRIBE request.
Khi bạn thấy mã này
When subscribing to event packages that may not generate immediate notifications, such as dialog or presence packages.
Cách khắc phục
No fix needed. The subscription was accepted but there is no state change to notify about yet.
Mô tả
The server is unable or unwilling to meet some of the preconditions specified in the request for resource reservation.
Khi bạn thấy mã này
When using QoS preconditions (RFC 3312) and the network cannot guarantee the required quality of service for the media session.
Cách khắc phục
Relax the precondition requirements or ensure the network path supports the required QoS. Consider removing precondition requirements for best-effort calls.
Sự khác biệt chính
204 is a 2xx Success response, while 580 is a 5xx Server Failure response.
SIP 204: The request was successful but the server has decided not to send a NOTIFY for this SUBSCRIBE request.
SIP 580: The server is unable or unwilling to meet some of the preconditions specified in the request for resource reservation.
You encounter 204 when when subscribing to event packages that may not generate immediate notifications, such as dialog or presence packages.
You encounter 580 when when using QoS preconditions (RFC 3312) and the network cannot guarantee the required quality of service for the media session.
Khi nào dùng cái nào
For 204 (No Notification): No fix needed. The subscription was accepted but there is no state change to notify about yet. For 580 (Precondition Failure): Relax the precondition requirements or ensure the network path supports the required QoS. Consider removing precondition requirements for best-effort calls.