Asterisk:[general] section of sip.conf SIP Configuration – general The [general] section of sip.conf includes the following variables: allowsubscribe = yes|no : Allow or Ignore Subscribe requests allow = <codec> : Allow codecs in order of preference (Use DISALLOW=ALL first, before allowing other codecs) disallow = all : Disallow all codecs (global configuration) allowexternaldomains = yes|no : Enable/Disable INVITE and … Read more
Register a sip client to asterisk In sip.conf under [general] add a register definition: Format: register => user[:secret[:authuser]]@host[:port][/extension] or register => fromuser@fromdomain:secret@host or register => fromuser@fromdomain:secret:authuser@host:port/extension If you have problems with your network connection going up and down (e.g. an unreliable cable connection) and you keep losing your sip registry, you may want to add registerattempts and registertimeout settings to the general section above the … Read more
Asterisk : Remote-Party-Id If you have set “sendrpid=yes” in the settings for the destination peer in sip.conf then Asterisk will always add an RPI header. Here is a typical example: Remote-Party-ID: “Satya” <sip:1000@192.168.1.10>;privacy=off;screen=no The name “Satya” and the number, 1000, get copied from the From header of the inbound call leg. The IP address 192.168.1.10 … Read more
Web Interfaces Flash Operator Panel The Flash Operator Panel (or FOP, as it’s more commonly known) is an interface primarily for the use of switchboard operators. FOP uses Adobe Flash to present an interface through a web browser, and connects to Asterisk through the Asterisk Manager Interface. There are two versions of the Flash Operator … Read more
Distributed Universal Number Discovery (DUNDi) Distributed Universal Number Discovery, or DUNDi, is a service discovery protocol that can be used for locating resources at remote locations. The original intention of DUNDi was to permit decentralized routing among many peers using a General Peering Agreement (GPA). The GPA is intended to take on the role of … Read more
Clustering The word “clustering” can mean different things to different people. Some people would say clustering is simply having a replicated system on standby available to be turned on when the primary system fails. To others, clustering is having several systems working in concert with one another, with replicated data, fully redundant, and infinitely expandable. … Read more
Asterisk Gateway Interface (AGI) The Asterisk dialplan has evolved into a simple yet powerful programming interface for call handling. However, many people, especially those with a prior programming background, still prefer implementing their custom call handling in a different programming language. Using another programming language may also allow you to utilize existing code for integration … Read more
Asterisk Manager Interface (AMI) The Asterisk Manager Interface (AMI) is a system monitoring and management interface provided by Asterisk. It allows live monitoring of events that occur in the system,as well as enabling requests for Asterisk to perform some action. The available actions are wide-ranging and include things such as returning status information and originating … Read more
Fax What Is a Fax? A fax machine allows a facsimile (copy) of a document to be transmitted across a telephone line. In the Internet age, this sort of functionality seems useless; however, prior to ubiquitous Internet access, this was a very useful thing indeed. Fax machines scan a document into a digital format, transmit … Read more
Text-to-Speech Utilities Text-to-speech utilities are used to convert strings of words into audio that can be played to your callers. Text-to-speech has been around for many years, and has been continually improving. While we can’t recommend text-to-speech utilities to take the place of professionally recorded prompts, they do offer some degree of usefulness in applications … Read more