Response Code Classesġxx = Informational responses. SIP response codes are very similar, with many overlapping codes between the protocols. The server either responds with the page or an error code if the page is unreachable. You know, the 404 Page Not Found and similar errors that show up in your browser every now and then. A quick glance at the SIP versions should immediately ring a bell if you are familiar with HTTPS/1.1 response codes. We briefly discussed this in our SIP Call Flow blog, listing a few of the main SIP requests and responses that occur with every VoIP call.
#PARTNER CODE FROM ONSIP UPDATE#
UPDATE = Changes the session’s state HTTPS Response Codes and SIP Response Codes REFER = Asks the callee to start a call transfer PUBLISH = Publishes an event to the server NOTIFY = Notifies the subscriber of a new event OPTIONS: Communicates info about the calling/receiving SIP phones’ capabilities
There are 14 SIP requests the first 6 are the most common.
SIP RequestsĮvery part of a SIP call involves sending requests from one device to the other. In the digital world, codes exist for each and every one of these actions. But underneath the UI are lightning-fast requests and responses that ensure delivery and connectivity before, during, and after we communicate with each other. On the surface, sending an email or making a phone call is a simple matter of pressing a few buttons.
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