Your business phone is more than a phone, it’s your other front door, an entry way to your business. With custom auto attendant instructions, company directories, holiday and promotional recordings or IVR prompts, you’ll create a positive first impression and enhanced customer experience.
It's a panoptic experience, being on hold while listening to someone singing about being on hold. Depending how long it takes for someone else to join the call, you could be listening for awhile. The music builds as time goes on, culminating in a spoken verse that begins: "Well, let me tell you all a story / about a man who was on hold all day..." This unusually self-aware song is the default music for a conference call service called UberConference, where "I'm On Hold" plays on a loop for anyone who calls in early, on almost every call that doesn't start exactly when it's scheduled to (or doesn't ever start at all). It's selected by nine out of ten call organizers, and plays over a million times per month, says Craig Walker, CEO of Dialpad, owner of UberConference.

Almost all phone systems* manufactured today have Message on Hold capability, but to determine exactly what you have before your purchase a Message on Hold system, it is best to check with your phone system vendor. Need equipment?
Depending on which ESI phone you have, use the appr opriate diagram (below) to connect it. Each diagram represents the panel on the phone’s underside. Note: The “Top of phone” and “Bottom of phone” references in these diagrams show the correct vertical orientation of the phone — i.e., the part with the display is the top.