From time to time I will get a call from a customer saying there is music coming out of the speaker of the telephone. This is the back ground music or B.G.M.
Normally this happens when a customer for get to pick up an outside line before making a phone call.
The solution is easy. On that [...]

You can answer calls that are ringing at a co-workers phone.  All you need to do is press the INTERCOM key,
Then press * *
Then dial the extension numnber that is ringing.
Example: Intercom * * 305