Say you're calling 818-555-1212 x1234
If you use TAKEphONE, all you do is select the number and hit send. THen the software automatically will ask if you want to send the remaing number digits. You simply wait until when you need to enter the extension and hit "send".

TAKEphONE is awsome. You can also find contacts by their initials and the coolest is by nicknames. For example, I will enter in peoples real first name, last name, etc, but I put in their nickname in the comments or notes fields. So one of my friends I call "bl", another I call "homes", and other I call "droid" I can match by nicknames or by real name. For that matter, I can match by zip code, address, city, any field. Pretty cool huh.

I found it at