When external video endpoints are called via a DNS zone, which dialing method requires DNS to be configured in the Expressway server?

The correct answer is B. URI dialing. URI dialing (e.g., [email protected]) is the dialing method that requires DNS to be configured on the Expressway server when using a DNS zone. When a call is placed to a URI, Expressway uses DNS to look up SRV and A records for the domain portion of the URI to locate the…

Cisco Expressway for Collaboration

Question

Options

AIP dialing
BURI dialing
CDN dialing
DE.164

How the community answered

(47 responses)

A
4% (2)
B
91% (43)
C
2% (1)
D
2% (1)

Explanation

URI dialing (e.g., [email protected]) is the dialing method that requires DNS to be configured on the Expressway server when using a DNS zone. When a call is placed to a URI, Expressway uses DNS to look up SRV and A records for the domain portion of the URI to locate the destination server. A DNS zone in Expressway specifically enables this DNS-based lookup. IP dialing uses explicit IP addresses and requires no DNS resolution. DN (directory number) dialing routes based on numeric patterns without DNS. E.164 dialing also routes numerically and does not inherently require DNS resolution.

Topics

#Expressway#URI Dialing#DNS#External Calling

Community Discussion

No community discussion yet for this question.

Full 300-820 Practice