An EHS cable (Electronic hookswitch cable) is an accessory added with a wireless headset for your desk phone to answer/end calls when away from the desk.

There's not a one size fits all EHS cable, you need to verify compatibility to ensure you get the correct model.

Both are accomplish the same goal, allowing you to use a wireless headset and answer/end calls away from the desk.

The main difference is a Handset Lifter is a mechanical device that raises and lowers the handset on your phone, whereas an EHS cable does the same job but electronically. If your phone is compatible with an EHS cable, it's a more clean and longer lasting solution.

It's really easy!

1. Connect the Handset Lifter cord to your headset charging base.
2. Remove the adhesive tape tabs, and place the Lifter at or above the speaker of your phone. Once attached to your phone, don't press to hard on the adhesive until you know you have the correct placement.
3. Once attached correctly, your on/off button will raise or lower the lifter when you want to answer or end a call.

Technically no, but If your phone is compatible It's highly recommended to add an EHS cable with your Adapt 30 or D904 wireless headset.

You'll get more value out of your wireless headset because you'll have more freedom to multitask, ability to answer/end calls up to 300 feet away from your desk, and reduce missed calls that leads to wasted time listening to voicemails and playing phone tag.