Poly APT-31 EHS Cable



Available on backorder

  • Same Day
  • Created with Sketch. 30 Day
    Money Back Guarantee

Poly APT-31 EHS Cable (Avaya/Tenovis) (Poly 37820-11 or HP 85Q84AA)

  • Typically used on Avaya/Tenovis phones (EHS Guide)
  • Compatible with CS500 & W700 series wireless headsets
  • Allows for remote answer/hang-up
  • Receive call alerts when away from your desk
  • Automates taking of calls
  • See picture for setup/installation
  • Same Day Shipping On In Stock Items
  • Warranty 1-Year
  • Non-Returnable

Poly APT-31 EHS Cable (Avaya/Tenovis) – Poly 37820-11 or HP 85Q84AA

The Poly (formerly Plantronics) APT-31 Electronic Hook Switch (EHS) Cable part # Poly 37820-11 or HP 85Q84AA for remote desk phone call control (answer/end). This cable eliminates the need for a HL10 Handset Lifter. This cable works with Tenovis desk phones and may work with additional manufacturers.

Replacement Note: The APT-31 EHS cable replaces the APT-30 cable and features compatibility with the Plantronics On-line Indicator accessory.

Poly APT-31 EHS Cable

Poly has several EHS cables, each being unique to a specific telephone and wireless product.
We strongly suggest confirming compatibility with us before purchasing.


TECH TIP: EHS Compatibility/Installation Guide

Poly APT-31 EHS Cable Instructions

Poly APT-31 EHS Compatibility:

Headset Compatibility

  • CS500 Series
    • Current: CS540, and all -XD variants
    • Discontinued: CS510, CS520, CS530
  • Savi Series:
    • Current: W8210, W8220, and all -M variants
    • Discontinued: W710, W720, W730, W740, W745, and all -M variants

Tenovis Phone Compatibility

  • T3 classic, T3 IP classic, T3 IP II classic
  • T3comfort, T3 IP comfort, T3 IP II comfort,
  • T3 compact
  • TH 13, TM 13, TS 13
  • OS13, OS 33

Note 9 = Only when connected to PABX Integral 5
Note 10 = Only when connected to PABX Integral 55

APT-31 EHS Specifications:

  • Model: APT-31
  • Warranty: 1 year
  • Poly SKU: 37820-11
    • Formerly 37820-01 – APT-30
    • UPC: 0017229137349
  • HP SKU: 85Q84AA
    • UPC: 197497572605

Additional information for the Poly APT-31 EHS Cable


Poly, Plantronics


Same Day Shipping On In Stock Items








37820-11 (Poly), 85Q84AA (HP)


0017229137349 (Poly), 197497572605 (HP)


There are no reviews yet.

Be the first to review “Poly APT-31 EHS Cable | Poly 37820-11 or HP 85Q84AA”

Your email address will not be published. Required fields are marked *

We Make Your Life Easy!

  • Headset / IT Specialists Since 1996
  • Shipping From Multiple Manufacturer Fulfillment Centers for Greater Inventory
  • Authorized Dealers (Unlike 3rd party sellers on Amazon, eBay, etc.)
  • Real People To Simplify Solutions, Verify Compatibility and Meet Delivery Deadlines
  • Guaranteed Genuine Product with Full Warranty and Support
  • Discounted Pricing with Additional Quantity Discounts Available
  • Same Day Shipping On Most Orders (12:00pm MST)
  • Free Technical Support For Our Customers
  • Out-of-Box Failures Are Replaced Quickly At Our Expense
  • Expedited Warranty Replacements
  • Visit: BBB Business Review A+ Rating