Author: VoIP Info
Asterisk text
Posted: July 31, 2005 Text in Asterisk Some channels have support for text communications in Asterisk Asterisk console channels channels support text receiving (shows up on the console) and sending (using the ‘show text’ CLI command). Asterisk ZAP channels channels support text…
Read More »Telecom Fraud
Posted: July 31, 2005 The note below describes one possible type of Telcom fraud — for a more information or to report VOIP fraud see the Additonal Resources section at the bottom of this page. Yet Another Kind of Internet Thievery (YAKOIT)…
Read More »Asterisk zaphfc install
Posted: July 31, 2005 Installing zaphfc (Kernel 2.4) Prerequisites: a PC with PCI slots for ISDN cards a HFC-S PCI ISDN card. Knowledge. It’s amazing how much you can learn by doing this type of installation, but you should at least have…
Read More »Call Accounting Software
Posted: July 31, 2005 A Call Accounting System is a telecommunications software or hardware application that captures, records, and costs telephone usage events. Internationally call accounting systems may be referred to as call logging systems. Call accounting systems detect outbound and inbound…
Read More »Asterisk embedded systems
Posted: July 31, 2005 Configuring a tiny Asterisk system There is a lot of interest in running Asterisk on “embedded” platforms like the Linksys NSLU2. News 2014-01-18 New Series IP Telephony CooVox-U20 CooVox-U50 CooVox-U100 by Zycoo Exclusive Distributor in Iran Zycoo Iran…
Read More »SER faq authenticate
Posted: July 30, 2005 Question In debugging yet another SIP hardware device I found that it was not authenticating after an INVITE. That is, the device sends me ‘INVITE’, I say ‘401‘, it says ‘SIP method ack‘, but I never hear from…
Read More »NVFaxEmail
Posted: July 29, 2005 See also NewmanTelOnAsterisk14 – Instructions to modify Newman Telecom modules for use on Asterisk 1.4.0 NVFaxDetect – Detects fax, talk, DMTF, and other tones on IAX, SIP, ZAP, and other channels NVLineDetect – Detects answer, busy, congestion, dialtone,…
Read More »OpenPBX
Posted: July 29, 2005 OpenPBX (Disambiguation) There are at least three uses of the name “OpenPBX” in relation to telephony: OpenPBX by Modulis.ca Inc. – an enterprise class Asterisk based PBX, by Montreal based company Modulis http://www.openpbx.net OpenPBX – an open source…
Read More »AU-600
Posted: July 29, 2005 The AU-600 is a USB device which provides a traditional PSTN FXO and FXS interface to a Windows machine running the Skype VoIP client software. It allows users to use a regular analog telephone as the audio device…
Read More »Cisco 7940-7960 auto-answer config
Posted: July 29, 2005 Taken directly from a post by John Todd: Subject: Office-wide paging with Asterisk and Cisco 7960 7940 phones I spoke the other day about my preliminary tests with office-wide paging with Cisco phones using the new SIP 6.1…
Read More »ISDN Features
Posted: July 28, 2005 Common ISDN Supplemantary Services CLIP: Calling Line Identification Presentation CLIP – no screening: CLIP can be modified by the caller out of the bounds of it’s assigned number space CLIR: Calling Line Identification Restriction. CLIP is supressed. COLP:…
Read More »PRI
Posted: July 28, 2005 ISDN connections are delivered in two variants, PRI – Primary Rate Interface and BRI – Basic Rate Interface. PRI is the standard for connections to offices. It’s based on a T1 line in the US, and E1 line…
Read More »ISDN
Posted: July 28, 2005 ISDN (Integrated Services Digital Network) A series (I-series) of ITU standards for digital telephone service. ISDN is usually provided in two variants: BRI: Basic Rate Interface – BRI was never very popular but does still exist in North…
Read More »ITU
Posted: July 28, 2005 http://www.itu.int/ The International Telecommunications Union, in Geneva, Switzerland is an international organization within the United Nations System that issues ‘Recommendations’ for global telecom networks and services. Examples: E Series: Network Operations H Series: Audiovisual and Multimedia systems –…
Read More »RFC3372
Posted: July 28, 2005 RFC 3372: Session Initiation Protocol for Telephones Abstract The popularity of gateways that interwork between the PSTN (Public Switched Telephone Network) and SIP networks has motivated the publication of a set of common practices that can assure consistent…
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