Go back to 646-229 - IPCAAM - IP Communications Advanced Account Manager Exam

Question :-

The CIO of a company interested in IP telephony is concerned that an IP telephony solution will not work with third-party software and hardware. Which of these is the best response to this concern?
Cisco IP telephony solutions can effectively replace functionality provided by third-party software and hardware
Cisco IP telephony solutions maintain interoperability through the use of a single-vendor network.
Cisco IP telephony solutions work with third-party PBX hardware and software.
Cisco IP telephony solutions are open standards-based.

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