Product Introduction
When a wireless headset cannot answer or end calls directly from the headset button, the issue is often caused by missing or incompatible Electronic Hook Switch (EHS) connectivity. The Poly Plantronics APU-75 (202678-01) EHS USB adapter cable is designed to enable remote call control between compatible Poly wireless headset systems and supported desk phones or UC platforms, ensuring seamless hands-free communication in office environments.
Application Scenarios
- Corporate office VoIP communication systems
- Call center headset deployment environments
- Desk phone + wireless headset integration setups
- Microsoft Teams / Skype for Business UC systems
- Enterprise communication workflows requiring remote call control
Technical Specifications
| Brand | Poly (Plantronics) |
| Model | APU-75 |
| Part Number | 202678-01 |
| Type | Electronic Hook Switch (EHS) USB Adapter Cable |
| Interface | USB + QD / Desk Phone Control Interface |
| Function | Remote Answer / End Call Control |
| Compatibility | Poly CS500 / CS500 XD / Savi Office Series |
| System Support | Selected IP Phones & UC Softphones |
| Condition | Enterprise Communication Accessory |
OEM Replacement Compatibility
- Poly CS510 / CS520 / CS530 / CS540 wireless headsets
- Poly Savi 7210 / 7220 Office series
- CS500 / CS500 XD DECT headset systems
- IP desk phone UC integration systems (Mitel / select models)
- Replacement for APU-75 / 202678-01 EHS cable setups
FAQ
Q1: Is this a normal USB headset cable?
A: No. This is an Electronic Hook Switch (EHS) control cable, not an audio cable.
Q2: What does EHS do?
A: It allows users to answer and end desk phone calls directly from a wireless headset.
Q3: Is it compatible with all phones?
A: No. Compatibility depends on supported IP phones and Poly headset base systems.
