To pickup an outside line
1. Dial 0
2. Press the Talk button
You now have an outside line
To call the Office
1. Dial 500
2. Press the Talk button
To put a call on hold
1. Press Pause / Recall
2. Hang Up
To get the call back
3. Press the talk button
4. Press Pause Recall
To transfer a call back to the office
1. Press Pause / Recall
2. Dial 500
3. Tell them who it is
4. Hangup