CS520 Headset - 2420 Digital Phone

Update: Please see Savi 8220M instead. 



Instructions on how to connect CS520 Wireless Headset to 2420 Digital Phone


Setup Instructions for CS520 Headset for the 2420 Phone


  1. Plug the larger, clear end of the control cord into the EU24 port on the bottom of the 2420 phone.
    RJ452420 base
  2. Plug the smaller, darker end of the control cord into the headset port on the bottom of the 2420 phone.RJ45 darkArrow right2420 base
  3. Plug the other end of the control cord into the base of the CS520.
    CS540 cordbase circle
  4. Plug the power cable into the base of the headset dock and plug the power adapter into wall. NOTE: The headset will need at least 20 minutes of charge before you can test on- or off-hook. Please allow the unit to charge over-night before the first real day of use.

base with circlearrowbase with 2 cords


Troubleshooting: (Re-subscribe)

Headset in your hands: Press and hold the subscription button on the base for 3 seconds. The "power-on/subscription" light will flash white. Press and hold the volume up button on the headset for three seconds or until the headset LED turns solid white. When the "power-on/subscription" light on the base goes solid white, then the headset and base are subscribed to each other.


headset controls

To answer a call or get dial tone press the call button(3) once, the indicator light(2) will flash when the headset is active.

To disconnect press the call button a second time.

To adjust the volume push the volume button(1 for volume decrease, 5 for volume increase).

To mute the headset push the mute button(6), there will be 3 rapid beeps indicating the headset is muted.



Article ID: 72446
Thu 2/21/19 1:45 PM
Wed 10/27/21 4:25 PM