SIP Headers – Compact Form Many common SIP header fields have a compact form where the header field name is denoted by a single lower case character. Some examples are given below − Header Compact Form To T Via V Call-ID I Contact M From F Subject S Content-Length I Here is the list of … Read more
Basic Call Flow – SIP Key terms used in SIP: It is important to familiarize with these terms in order to understand basic SIP call flow. Here are few of them: Call flow: It’s a flow diagram of SIP messages — shows an ideal way how a media session carried over two endpoints. Its a … Read more
Asterisk channel variable DIALSTATUS Contains a text string signifying result of the last dial attempt: ANSWER: Call is answered. A successful dial. The caller reached the callee. BUSY: Busy signal. The dial command reached its number but the number is busy. NOANSWER: No answer. The dial command reached its number, the number rang for too … Read more
; extensions.conf – the Asterisk dial plan ; ; Static extension configuration file, used by ; the pbx_config module. This is where you configure all your ; inbound and outbound calls in Asterisk. ; ; This configuration file is reloaded ; – With the “dialplan reload” command in the CLI ; – With the “reload” … Read more