It takes you more than just a telephone call to get the job done. The IP telephony solutions are what you would really need to communicate well.
IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol’s packet-switched connections to exchange voice, fax, and other forms of information. They particularly support voice over IP (VoIP), open standards like SIP, mobile workers and the unified voice and data communications business.
They are made to fit you organization and offer everything that enterprise may need.