What does a comma accomplish when it is used in a SIP Dial Rule pattern that is associated with
a Cisco 9971 IP Phone that is registered to Cisco Unified Communications Manager?

A.
It inserts a 500-millisecond pause between digits.

B.
It causes the phone to generate a secondary dial tone.

C.
It is a delimiter and has no significant dialing impact.

D.
It indicates a timeout value of 5000 milliseconds.

E.
It is an obsolete parameter and will be ignored.

Explanation:
Comma is accepted in speed dial as delimiter and pause. -Comma used to
delineate dial string, FAC, CMC, and post connect digits For post connect digits, commas insert a
2 second delay Commas may be duplicated to create longer delays