Shorten delay time after dial

Hello, how can I shorten the delay after composing number ?
Especially in a phone Avaya IP Office 4610SW. In the phone options there is not such a option.
In which way I can edit and change Asterisk/Freepbx default dialplan? from GUI?

The easiest way is to dial the number, then go off-hook.

There are settings that you can adjust (called Digit Timeout) but they are technology specific.

For example, in Chan-SCCP-B, the digit timeout is handled in the server, but in many SIP phones, the digit timeout is set in the phone itself.

One quick place to check is to dial the number and add a pound sign (#) at the end to see if your phone recognizes it as an immediate dial option.