Retry-After-Headerm(A SIP (Session Initiation Protocol) header placed in the server response to a client's request, so that the client comes back after the specified period)
Retry-After(A SIP (Session Initiation Protocol) header placed in the server response to a client's request, so that the client comes back after the specified period); Retry After(A SIP (Session Initiation Protocol) header placed in the server response to a client's request, so that the client comes back after the specified period)
retry-after A SIP (Session Initiation Protocol) header placed in the server response to a client's request, so that the client comes back after the specified period
