| Manufacturer | Zhone Technologies |
| Manufacturer Part # | 3811-B1-001 |
| Cost Central Item # | 10341299 |
| Product Description | Paradyne COMSPHERE 3811 - Fax / modem - plug-in module - RS-232 - 19.2 Kbps / 2 analog port(s) |
| Device Type | Fax / modem - serial RS-232 |
| Enclosure Type | Plug-in module |
| Form Factor | Rack-mountable |
| Localization | Worldwide |
| Max Transfer Rate | 19.2 Kbps |
| Protocols & Specifications | ITU V.21, Bell 212A, ITU V.22, ITU V.22bis, ITU V.32, ITU V.32bis, Bell 103J, ITU V.25bis, AT&T V.32terbo , Hayes AT command set |
| 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 |
| System Requirements | Microsoft DOS, UNIX, Microsoft Windows 3.x/95/98 |
| Manufacturer Warranty | 2 years warranty |