SIP 300 Multiple Choices vs 608 Rejected
SIP 300 (Multiple Choices) is a 3xx Redirection response, while 608 (Rejected) is a 6xx Global Failure response. 300 indicates 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. In contrast, 608 means that an intermediary machine or process rejected the call attempt. Similar to 607 but the rejection comes from the network rather than the end user.
Description
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 You See It
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.
Description
An intermediary machine or process rejected the call attempt. Similar to 607 but the rejection comes from the network rather than the end user.
When You See It
When a network element (not the callee) blocks the call. Used by analytics engines and call-blocking services in the network path.
How to Fix
This is a network-level block. Contact the network administrator or carrier to understand why the call was blocked.
Key Differences
300 is a 3xx Redirection response, while 608 is a 6xx Global Failure response.
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.
SIP 608: An intermediary machine or process rejected the call attempt. Similar to 607 but the rejection comes from the network rather than the end user.
You encounter 300 when when a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
You encounter 608 when when a network element (not the callee) blocks the call. Used by analytics engines and call-blocking services in the network path.
When to Use Which
For 300 (Multiple Choices): Select one of the provided Contact addresses and resend the request to that specific URI. For 608 (Rejected): This is a network-level block. Contact the network administrator or carrier to understand why the call was blocked.