Installation Instructions

Some businesses plug the radio or a CD player into their business telephone systems, so callers on hold hear a radio station or a CD playing while on hold (which is not legal, by the way!). Our Sonic On Hold player simply replaces the radio or CD player – it plugs into the same “Music On Hold” jack on your phone system using the included hookup cable.


  • Locate the Music On Hold jack on your business telephone system (not on the phone on your desk)
  • Plug the enclosed audio cable into the MOH jack
  • Plug the other end of the audio cable into the Sonic On Hold player’s “Out” jack
  • Plug the Sonic On Hold player’s power transformer into a wall outlet for electricity – plug the other end into the player’s PWR jack
  • Set the volume by calling into your phone system (ON A WIRED PHONE – NOT A CELL PHONE), then adjust the volume on the player


Detailed Instructions

  1. Locate the Music On Hold (MOH) jack on your phone system – which will likely be inside the central box of your phone system in a back room or closet – not on one of the telephones on your desks. Once you locate the phone system, the MOH jack may be inside the central box of your phone system, so you may need to lift the cover off.If you are unable to locate the MOH jack on your phone system, call your phone services vendor – the company you would call if your phone system broke – and ask them where the MOH jack is on your system.

    If you are unable to locate the jack or you do not wish to deal with this issue, ask your phone services vendor to stop in for a service call to install the on hold player for you.

  2. Once the MOH jack is located on your phone system, determine which of the two enclosed plugs has the correct connector for your phone system’s MOH jack. It will likely be either an RCA jack or it will require a mini-plug. One end of the cable we include with your player has an RCA plug on it – the adapter can be removed to reveal a mini-plug.
    pic5 Plug the correct connector into the MOH jack on the phone system. Plug the other end of the cable (which has a mini plug on it) into the “Out” jack on the Sonic On Hold player.
  3. Plug the black power transformer that came with the Sonic On Hold player into an electrical outlet. Plug the other end of the cable into the PWR jack on the player. Best to plug the power transformer into a surge strip or Uninterruptible Power Supply (UPS) if you have one for your phone system – that will protect the player from power surges.
  4. After about 20 seconds, the player will begin to play. NOTE – a microSD card MUST be inserted in the slot in the player before you plug the PWR in.
  5. The next step is to set the volume that callers on hold hear. Call yourself and have someone in your office put you on hold. DO NOT CALL ON A CELLPHONE – CALL ON A WIRED PHONE. Go back to the player and adjust the volume to a pleasing level on the phone. The most common error made in this process is to set the volume of the player too high. When in doubt, turn the volume down. The player is very sensitive – and volume set too high will result in fuzziness and even distortion. Turn the volume down to achieve the best possible sound on the phone.


In some cases, business telephone systems have an INTERNAL MOH volume control – in other words, the phone system has its own volume inside the main phone system box. Some phone systems do not have this internal volume, so don’t worry if yours doesn’t. If yours does, however, try to locate it – it will be labeled “music” or “moh”. Turn that volume all the way up. Then back it off slightly. Then go back to the player and set the final volume. As mentioned earlier – if you don’t wish to deal with this issue, call your phone provider to do it for you. In most cases we are unable to advise you on this issue, because there are dozens, if not hundreds of phone systems in the world. Best to get help from the professional who knows your system best if you run into a problem. The bottom line is – if the light on the player is solid green, the player is working fine. The issue is connecting it to your phone system.