Citel PBXgateways are installed at the central PBX location, and EXTenders are deployed at branch offices, call centers, or at home offices over managed IP connections, DSL, cable, or analog circuits
Citel is a provider of unique Voice over Internet Protocol solutions. Citel''''''''s Portico TVA (Telephone VoIP Adapter) enables companies to migrate to IP telephony by leveraging their existing wiring infrastructure, reducing the cost and time involved in the migration process.Citel''''''''s EXTender™ and PBXgateway™ product suite enables enterprises to distribute the features and applications of a central PBX to branch offices, call centers, and home-based employees, all over an existing IP or other managed data circuit.
Denphone K.K. is Japan's leading provider of open PC based VOIP Telephone PBX systems. Our PBX and telephony solutions are based on the Asterisk open source telephony architecture, and provide advanced features such as voicemail and conferencing as standa
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