You are working with an organization that would like to migrate to an IP telephony solution. Currently the organization has three different types of key switches at its four locations. The organization also has an existing voice mail system that it would like to keep during the migration and then later migrate to CUE. Which integration plan should you use to provide the best solution for this organization?

A.
Use the AMIS-A integration plan and deploy CUE at each location along with the existing voice mail systems.

B.
Use the Analog DTMF integration plan to provide connectivity from the CME to the existing voice mail system.

C.
Use the Skinny integration plan to deploy CUE at headquarters and have all users use a centralized voice mail solution.

D.
Deploy the SMDI integration plan and allow CUE to interoperate with the existing voice mail system during the system migration.

Explanation:
Explanation :
For dual tone multifrequency (DTMF) integrations, information on how to route incoming
or forwarded calls is sent by a telephone system in the form of DTMF digits. The DTMF
digits are sent in a pattern that is based on the integration file in the voice-mail system
connected to the CME router. These patterns are required for the DTMF integration of
Cisco CME with most voice-mail systems. DTMF integration configuration on the Cisco
CME router works with any analog voice-mail system. Voice mail systems are designed to
respond to DTMF after the system has answered the incoming calls.