418 V7122 GatewayUser Guide5xx Response – Server Failure ResponsesTable 90 5xx SIP Responses5xx Response Comments500 Internal Server Error501 Not Implemented502 Bad gateway503 Service Unavailable504 Gateway Timeout505 Version Not SupportedOn reception of any of these Responses, the GWreleases the call, sending appropriate release causeto PSTN side.The GW generates 5xx response according to PSTNrelease cause coming from PSTN.6xx Response – Global ResponsesTable 91 6xx SIP Responses6xx Response Comments600 Busy Everywhere603 Decline604 Does Not Exist Anywhere606 Not AcceptableOn reception of any of these Responses, the GWreleases the call, sending appropriate release causeto PSTN side.
