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Music On Hold Messages by Easy On Hold logo

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Installing Music & Messages On The Comdial PBX, DX-120

Comdial pbx DX 120 phone system

Pictured: A Comdial DX-120 in use at an Easy On Hold customer site. The Comdial DX-120 is a commonly-found PBX business phone system. Adding music on hold to this system is not too tricky. Take a look at these instructions, provided by Comdial in their DX-120 Phone System Manual.

Connecting Music On Hold Source

  1. Be sure that the entire system is turned off.
  2. Remove the KSU 1 cover (four screws at each corner).
  3. Install a static discharge wrist strap on your bare wrist, and adjust it for a snug fit.
  4. CAUTION
    Be sure that the strap is touching bare skin and is not isolated by clothing.
  5. Connect the wrist strap cord between the wrist strap and an AC or earth ground.
  6. Connect a static discharge wrist strap to a suitable earth ground.
  7. CAUTION
    Circuit boards are susceptible to damage caused by electrostatic discharge. You must keep this in mind as you handle the circuit boards. For additional information, see Vertical publication IMI01-005, Handling of Electrostatically Sensitive Components.
  8. Locate the CPM and the MUSIC option strap.
  9. Make sure that the MUSIC option strap is in the EXT position. (Required for external source to operate on MC1.)
  10. Locate CPM the MC1 connector jack on the CPM.
  11. Connect the output of the external music on hold source to the appropriate MC1 connector.
  12. HINTS
    • At default MC1 is used for Music On Hold.(This means plug the message on hold player into the MC1 input)
    • The connection is a 3.5mm jack (also known as one-eighth-inch). You will use the RCA-to-3.5mm plug adapter included with your music on hold device from Easy On Hold.
  13. Adjust the music volume level at the external music source (music on hold player).

HINTS

When adjusting the music for Music On Hold:

  • Place a call into the system on one of the CO Lines so that the external music source is heard by the calling party (you). Note: use a land-line to make this call, as cell phones are susceptible to noise, drop in audio quality and distortion as a result of noise-cancelling processing.
  • Adjust the volume level of the external music source until a desirable level is reached.

Give us a call.

Don’t worry about asking for help. We can be reached between 8:30am and 5pm Eastern time: 1-888-798-HOLD (4653).