An engineer with ID0123456789 is designing a new dial plan for a customer that has offices in several countries on four continents around the world. This client...

An engineer with ID0123456789 is designing a new dial plan for a customer that has offices in several countries on four continents around the world. This client also wants to integrate with a Microsoft Lync backend. Which dial plan type does the engineer recommend?

A. H.323 B. SIP URI C. E.164 D. TEHO