It used to be that transferring or relaying calls was hard work. Not so much anymore with the Yealink EXP20 Expansion Module. You can hold up to 20 different contacts so you can transfer them to the right person. In fact, this will be a great addition to your receptionist or administrative assistant’s desk. Never again will they have to remember thousands of numbers (or let alone dial the wrong number). If your business takes on high volume calls, this is the module you need for the office. You would be crazy to operate your business without it.