Modulis - A Canadian provider of business VoIP solutions with Asterisk. The company provides full-featured enterprise business phone systems complete with Unified Communications, personalized setup and configuration, VoIP training, SIP trunks and ready-to-use IP phones. Asterisk - An open source telephony switching and private branch exchange service for Linux. Information on downloading, installation of and support for the product. Asterisk Guru - Tutorials and a forum for the asterisk PBX and voip in general. Information on the Zoiper softphone. Asterisk Services - Services include custom Asterisk development, support, and business solutions. Digium - The creator and primary developer of Asterisk - an open source telephony platform. Flash Operator Panel - A switchboard GUI for Asterisk. Includes download, FAQ, support and demo pages. Orderly Software - Developer of additional functionality for Asterisk call centers. Includes statistical and call queueing software. Trixbox - An Asterisk-based PBX Phone System (formerly Asterisk@Home). Hosts a forum, a wiki, an FAQ, a download area and a list of their products. VOIP Info - A reference for VOIP, primarily Asterisk. A wiki covering installation and suppliers. Xorcom - Business telephony systems based on Asterisk. Contains details of hardware and software products. Asterroid - Asterisk based PBX packaged as a Linux distribution. Contains downloadable trial version, faq and information on partners and contact details. Thirdlane Technologies - A complete Asterisk based PBX packaged as a Linux distribution. Describes products, partners, solutions and allows download of trial and full versions. VoIP Citadel - Asterisk consultant based in Tacoma, Washington. Contains information about their services. The Asterisk Pages - A repository of asterisk call-center knowledge consisting of news, a wiki, forum, press releases and articles. Asterisk Expert - Asterisk Consultants. Information about their services and how to contact them. Asterisk Consultants - Consultants for Asterisk system designs and VOIP solutions. Ziptel Networks - Hourly Asterisk and VoIP PBX Support and Custom Telephony Solutions as well as Linux Installation and Support Services. Askozia - German-based developer of AskoziaPBX, an Asterisk-based IP PBX Software for small and medium-sized businesses. Information on trial version, purchasing and support. Also offers forums and a blog. Asterisk parallel port interface - This site shows helpful circuitry for use with the Asterisk app_rpt software for Linux.