An engineer 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…

The correct answer is C. E.164. E.164 is the ITU-T international standard for public telephone numbering and is the best dial plan type for a global, multi-continent deployment. It provides a universally understood format (country code + subscriber number) that works consistently across all countries and…

Gateway and Dial Plan

Question

An engineer 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 should the engineer recommend?

Options

ASIP URI
BTEHO
CE.164
DH.323

How the community answered

(53 responses)

A
4% (2)
B
11% (6)
C
77% (41)
D
8% (4)

Explanation

E.164 is the ITU-T international standard for public telephone numbering and is the best dial plan type for a global, multi-continent deployment. It provides a universally understood format (country code + subscriber number) that works consistently across all countries and integrates cleanly with Microsoft Lync/Skype for Business, which normalizes numbers to E.164 format internally. SIP URI is an addressing scheme but not a dial plan standard. TEHO (Tail-End Hop-Off) is a call routing strategy, not a dial plan type. H.323 is a signaling protocol.

Topics

#E.164#international dial plan#Microsoft Lync#dial plan design

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