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.
GrouPhone is a privately held corporation, headquartered in the USA with switching facilities around the world. GrouPhone was founded by a group of technology pioneers and visionaries who transformed the Information Technology industry. GrouPhone`s founde
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