Poly Telephone Interface Cable | CS500/MDA200 – 85R57AA

Product Overview

The Poly Telephone Interface Cable (85R57AA) connects your Poly wireless headset base station or MDA200 adapter to your desk phone. This essential cable features a 4-pin modular end that plugs into your phone's handset or headset port, while the RJ45 (8-pin modular) end connects to the back of your wireless base or adapter.

Designed for seamless desk phone integration, this 21-inch cable includes a pass-through connection allowing your telephone handset to plug into the middle of the cord. Compatible with CS500 series, Savi Office series, and MDA200 adapters.

Who Should Use This Product?

Poly Wireless Headset Users

Essential replacement or spare cable for users with CS500, Savi Office, or MDA200 systems who need desk phone connectivity.

IT Administrators

Convenient spare part for maintaining enterprise headset deployments and quickly resolving connectivity issues.

Why Choose This Product

The Poly Telephone Interface Cable ensures reliable desk phone connectivity for your Poly wireless headset system. Keep a spare on hand to minimize downtime, or use as a replacement for worn or damaged cables. The pass-through design allows continued use of your desk phone handset when the headset is not in use.

Will This Work for Me?

Works With

  • Poly CS500 series (CS510, CS520, CS530, CS540)
  • Poly Savi Office series (W710, W720, W730, W740)
  • Poly MDA200 adapter

Requirements

  • Desk phone with handset port (RJ-9) or headset port

Note

Replacement for discontinued part number 86009-01. Also known as Poly part number 86007-01.

What's in the Box

  • Telephone interface cable

Technical Specifications