Which dial plan characteristic shows the most obvious improvement by dropping a number translation step?

A.
availability

B.
post-dial delay

C.
scalability

D.
hierarchical design

Explanation:
Post-dial delay is the time between when the last digit is dialed and the moment the phone rings at the receiving location. In the PSTN, people expect a short post dial delay and to hear ring back within seconds. The more translations, digit manipulations, and lookups that take place, the longer the post dial delay becomes. Overall network design, translation rules, and alternate paths affect post dial delay. Minimize the amount of dial peers and translations to reduce post-dial delay.

By dropping a number translation step, the post-dial delay time will be obvious improvement.