How does the Cisco Unified Communications Manager Express match an outbound VoIP dial
peer?

A.
Outbound dial-peer matching uses the entire string of digits en bloc to match the dial peer with
the longest match.

B.
Outbound dial-peer matching is completed on a digit-by-digit basis.

C.
It matches outbound dial peers by placing all the dial peers into a hunt group and then uses the
entire dialed number en bloc to match the first dial peer.

D.
Cisco Unified Communications Manager Express creates a hunt group that contains all the
configured dial peers and then applies the dial digits in a digit-by-digit manner to match a dial peer.

Explanation:
When a router receives a voice call, it selects an outbound dial peer by comparing
the called number (the full E.164 telephone number) in the call information with the number
configured as the destination pattern for the POTS dial peer. The router then strips out the leftjustified numbers corresponding to the destination pattern matching the called number. If you have
configured a prefix, the prefix will be put in front of the remaining numbers, creating a dial string,
which the router will then dial. If all numbers in the destination pattern are stripped-out, the user
will receive (depending on the attached equipment) a dial tone.