Autodialer dial phone extension

Question:

How do I have Voicent dial extensions?

Answer:

There is really no fail-safe way of dialing extensions using an
automatic system like Voicent. But you can generally try to do
the following:

You can append the phone extension after the main number and
you should put some commas in front of the extension. For example,
if your main number is 234-5678, and the extension is 123, then you
can use 234-5678,,,,,,,123, where each comma represents some delay
in the dialing sequence. The more comma you have, the longer the delay.

You need to experiment on the number of commas to use. For certain
numbers that you cannot experiment, then you just have to make a guess.

If there is a receptionist picking up the phone at the main number, this
scheme is not going to work.