List of SIP response codes

SIP status codes, inaccurate, also called SIP error codes or SIP responses, denote the possible answers to a SIP request. The Session Initiation Protocol ( SIP) for the construction, management and termination of a communication session (mostly IP telephony ) is based on the Hypertext Transfer Protocol. The subscriber devices to send requests (English " requests" ) and answer this (English " responses" ) using the reply codes that are based on the HTTP status codes.