ISDN Unlocked: Engineering the World’s First Unified Digital Telecom Network from Circuit Switching to IP Interworking
| Country | USA |
| Brand | MRCUFF |
| Manufacturer | MRCUFF |
| Binding | Unknown Binding |
| ItemPartNumber | MRCUFF1368 |
| Model | MRCUFF1368 |
| Color | Green |
| ReleaseDate | 0000-00-00 |