Session Initiation Protocol Introduction (2)
and remaining. Closing responses (2xx-6xx) convey the result of the request processing and are despatched reliably.
This feature tag is used for reliability of provisional responses. When present in a Supported header, it indicates that the UA can send or receive reliable provisional responses. When current in a Require header in a request it indicates that the UAS SHOULD send all provisional responses reliably. When current in a Require header in a reliable provisional response, it indicates that the response is to be despatched reliably.
Session Initiation Protocol: Session initiation protocol is the usual choice for VoIP and other IP communications. VoIP network directors are concerned with permitting SIP calls by way of a firewall whereas securing the network. SIP works with other protocols like HTTP and SMTP to combine the a lot wanted security measures. SIP trunking can securely join SIP users with callers on a conventional phone system.
She reminded me of Reeta Chakrabarti, the BBC political reporter. The BBC is financed by the charge for the licence that television viewers have to buy. Chakrabarti likes fancy designer garments. So, as she’s a BBC worker, it was amusing watching her during the last election campaign asking the politicians … Read the rest