SIP method cancel
Posted: September 11, 2003 From the SIP RFC: The CANCEL request, as the name implies, is used to cancel a previous request sent by a client. Specifically, it asks the UAS to cease processing the request and to generate an error response…
Read More »SIP method register
Posted: September 11, 2003 From the SIP RFC: Registration entails sending a REGISTER request to a special type of UAS known as a registrar. A registrar acts as the front end to the location service for a domain, reading and writing mappings…
Read More »SIP method options
Posted: September 11, 2003 From the SIP RFC: The SIP method OPTIONS allows a UA to query another UA or a proxy server as to its capabilities. This allows a client to discover information about the supported methods, content types, extensions, codecs,…
Read More »SIP redirect server
Posted: September 11, 2003 From the SIP RFC: Redirect Server: A redirect server is a user agent server that generates 3xx responses to requests it receives, directing the client to contact an alternate set of URIs. In some architectures it may be…
Read More »Asterisk security sip
Posted: September 10, 2003 Implemented SIP security in Asterisk MD5 Digest Authentication. This is a feature of the SIP protocol. Password are not sent in clear text. Not implemented SIP security in Asterisk SIPS – SIP over SSL over TCP. Since SIP…
Read More »DOCSIS
Posted: September 10, 2003 DOCSIS (Data Over Cable Service Interface Specification) is the standard for cable modems developed by CableLabs. There are 4 versions of the standard: DOCSIS 1.0 – targeted at 1995-1996 technology, widely deployed around the world DOCSIS 1.1 –…
Read More »DiffServ (Differentiated Services)
Posted: September 7, 2003 DiffServ is a QoS (Quality of Service) protocol for managing bandwidth allocation for Internet media connections (e.g. a VOIP voice connection). Overview here. With low bandwidth lines, such as ADSL, users may feel jittering. Try to allow full…
Read More »Asterisk contexts
Posted: September 7, 2003 All defined extensions belong to one CONTEXT. These are defined in extensions.conf and referenced in many other configuration files. You can jump between contexts with the Goto application. Macros are defined as separate contexts. Contexts are named freely,…
Read More »Asterisk cmd SetMusicOnHold
Posted: September 7, 2003 Synopsis: Set default Music On Hold class Description: SetMusicOnHold(class) Sets the default class for music on hold for a given channel. When music on hold is activated, this class will be used to select which music is played….
Read More »Asterisk cmd DBdel
Posted: September 7, 2003 DBDel Synopsis: Delete a key from the database (the Asterisk internal Berkley DB) Description DBdel(family/key) Deletes a key from the Asterisk database. This application has been deprecated in favor of the Asterisk func DB_DELETE function (as of v1.4)….
Read More »Asterisk cmd Answer
Posted: September 7, 2003 Synopsis Answer a channel if ringing Description Answer([delay]) If the channel is ringing, answer it, otherwise do nothing. If a delay is specified, Asterisk will wait this number of milliseconds AFTER answering the call. If you want to…
Read More »Asterisk cmd Zapateller
Posted: September 7, 2003 Synopsis: Block telemarketers with SIT Description: Zapateller(options) Generates special information tone to block telemarketers from calling you. Options is a pipe-delimited list of options. The following options are available: answer: causes the line to be answered before playing…
Read More »Asterisk cmd SendImage
Posted: September 7, 2003 Synopsis: Send an image file Description: SendImage(filename) Sends an image on a channel. If the channel does not support image transport, and there exists a step withpriority n + 101, then execution will continue at that step.Otherwise, execution…
Read More »MPLS (Multiprotocol Label Switching)
Posted: September 7, 2003 What is MPLS? MPLS is a QoS (Quality of Service) protocol for managing bandwidth allocation for Internet media connections (e.g. a VOIP voice connection). The most important thing to understand about MPLS is that it is not a…
Read More »Asterisk cmd GetCPEID
Posted: September 7, 2003 Synopsis: Get ADSI CPE ID Description: GetCPEID Obtains and displays CPE ID and other information in order to properly setup zapata.conf for on-hook operations. Return codes Returns -1 on hangup only. Asterisk | Applications | Functions | Variables…
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