With the OHP-7500, now ANY business can have on-hold audio. It used to be that only businesses with PBX or KEY phone systems could have on-hold audio. Not anymore! The new OHP-7500 has an integrated analog adapter module which allows it to provide on-hold audio content to ordinary analog and popular "KSU-Less" phone systems.

The module is a landmark achievement that allows millions of businesses without PBX or KEY systems to have on-hold audio for the first time, ever. The OHP-7500 works with virtually all analog and KSU-less phones and is activated by pressing the hold button on any phone extension. The module supports up to four incoming lines and provides on-hold audio on up to 50 phone extensions.

For use with stand-alone, multi-line phones, not for use with a PBX or key system.

Also not for use with cordless phones, even as part of a multi-line corded system. When used with such a system, calls put on hold at the cordless handsets will NOT result in music-on-hold being heard by the caller.