SIP 300 Multiple Choices vs 483 Too Many Hops
SIP 300 (Multiple Choices) is a 3xx Redirection response, while 483 (Too Many Hops) is a 4xx Client 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, 483 means that the Max-Forwards header has reached zero, indicating the request has passed through too many proxies.
Descrição
The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
Quando você o vê
When a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
Como corrigir
Select one of the provided Contact addresses and resend the request to that specific URI.
Descrição
The Max-Forwards header has reached zero, indicating the request has passed through too many proxies.
Quando você o vê
When a request traverses more proxies than the Max-Forwards counter allows (default 70). Often indicates a routing loop.
Como corrigir
Check for routing loops. If the path is legitimately long, increase Max-Forwards. Usually indicates misconfigured routing.
Diferenças principais
300 is a 3xx Redirection response, while 483 is a 4xx Client 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 483: The Max-Forwards header has reached zero, indicating the request has passed through too many proxies.
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 483 when when a request traverses more proxies than the Max-Forwards counter allows (default 70). Often indicates a routing loop.
Quando usar qual
For 300 (Multiple Choices): Select one of the provided Contact addresses and resend the request to that specific URI. For 483 (Too Many Hops): Check for routing loops. If the path is legitimately long, increase Max-Forwards. Usually indicates misconfigured routing.