The VTech 4-Line Small Business System Main Console (CM18445), works with the Easy On Hold® 2 Channel Business Audio System, allowing streaming music and messages on hold that sound just like a major call center. This VTech phone has a place to plug in our message on hold player device, so callers will hear your messages while they wait on hold.
Where this creates an extra snag with music on hold is that the loudest part of a song doesn’t typically come in until the final chorus or reprise. This means that if you just listen to the first 10 seconds to check that your new hold music is working, then chances are you’ll be blissfully unaware that three minutes into holding (just as customers are beginning to feel irritated anyway), you start playing a sound like fingernails on a blackboard to them.

So modern technology, even with the most advanced VoIP business phone systems, has not improved the plight of the on hold song. If you are interested in learning more, check out Tom Scott's explanation at the Milton Keynes Museum, in their Connected Earth gallery.
We needed a new 18 line telephone system for our purpose built factory. Birmingham Telecom were extremely helpful, knowledgable, and good value. The installation and training went smoothly and we are very happy with the Panasonic system we purchased - it has worked without any problems since the day it was installed and we have been able to fine tune the configuration to make it work just as we want. If your looking for a provider, I thoroughly recommend Birmingham Telecom