Based on the range of AGPTEK’s call center / dialpad + headset units, here are features commonly included, which likely apply (or nearly apply) to your unit: However not all may be included...
| Feature | Typical / Expected |
|---|---|
| Telephone type | Single‑line, corded phone with built‑in dial pad |
| Headset style | Monaural (one‑ear) headset (sometimes with optional second port) |
| Microphone | Noise cancelling / electret condenser mic agptek.com+3agptek.com+3agptek.com+3 |
| Headset impedance / sensitivity | Receiver impedance ~ 150 Ω ± 10 Ω agptek.com |
| Volume control / mute | External volume control, mute button (often with LED indicator) agptek.com+2agptek.com+2 |
| Dial / memory / caller ID | Many include FSK/DTMF caller ID display, memory for incoming/outgoing numbers, redial, flash, pause, etc. agptek.com+2agptek.com+2 |
| Recording / PC port | Some have a recording jack / interface to connect to PC for call capture. agptek.com+2agptek.com+2 |
| No external power (or powered by phone line) | Some units operate from the phone line itself, without separate power adapters. Amazon+2agptek.com+2 |
| Headset mic boom adjustability | Microphone boom often rotates (330° or similar) to suit either ear. agptek.com+2Walmart.com+2 |
| Compatibility / ports | Works with “headset‑ready” telephones, with headset jack (RJ9 / modular), extension jack for second phone or modem in some models, |
