Citel is The VoIP Migration Company™. We develop the world''s most comprehensive portfolio of network-edge products enabling enterprises to realize the cost and productivity benefits of IP telephony.
With Citel''s Portico™ TVA™, existing PBX handsets connect directly to a Session Initiation Protocol (SIP) based on-premise IP PBX or Hosted IP telephony service provider. Citel can help you determine which type of deployment strategy - Hosted or premise-based - is best for you and the needs of your enterprise.
Founded in 2000, ATOP Technology is an innovative manufacturer based in Shenzhen, China, specializing in researching, designing and production of network communication products. As one of the early network equipments makers, ATOP Technology has undergone
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