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Setup Instructions for CS55 Headset for 2420 Phones

For 2420 phones without sidecar please follow steps below.

  1. Unplug the short cord in the headset dock and set aside.
  2. Plug the larger, clear end of the control cord into the EU24 port on the bottom of the 2420 phone.
  3. Plug the smaller, darker end of the control cord into the headset port on the bottom of the 2420 phone.

  4. Plug the other end of the 2420 cord into th headset dock where the short cord was previously located.
  5. Plug the headphone pin into the headphone jack on the base of the headset dock.
  6. Plug the power cable into the base of the headset dock and plug the power adapter into the wall.

To answer a call or get dial tone press the headset button once.

To disconnect press the headset button a second time.

To adjust the volume push the volume switch on the headset up to increase the volume and down to decrease it.

To mute the headset push the volume switch in, there will be 3 rapid beeps indicating the headset is muted.