| Manufacturer | Zhone Technologies |
| Manufacturer Part # | 3980-A1-401 |
| Cost Central Item # | 10341236 |
| Product Description | Paradyne COMSPHERE 3980 Plus - Fax / modem - external - RS-232 - 33.6 Kbps / 2 analog port(s) |
| Device Type | Fax / modem - serial RS-232 |
| Enclosure Type | External |
| Localization | English / United States |
| Max Transfer Rate | 33.6 Kbps |
| Protocols & Specifications | Bell 103, ITU V.21, Bell 212A, ITU V.22, ITU V.22bis, ITU V.32, ITU V.32bis, ITU V.34, ITU V.23, ITU V.25bis |
| Fax Compatibility | G3 |
| Max Fax Transfer Rate | 14.4 Kbps |
| Error Correction Protocol | MNP-4, ITU V.42, MNP-2, MNP-3 |
| Data Compression Protocol | MNP-5, ITU V.42bis |
| Analog Ports Qty | 2 |
| Power | 120 V ( 50/60 Hz ) |
| System Requirements | Microsoft DOS, UNIX, Microsoft Windows 3.x/95/98 |