| Narrowband | |
| A low-capacity communications circuit/path. It usually implies a speed of 56Kbps or less. (Contrast with wideband and broadband). | |
| Network | |
| A group of stations (computers, telephones, or other devices) connected by communications facilities for exchanging information. Connection can be permanent, via cable, or temporary, through telephone or other communications links. The transmission medium can be physical (i.e. fibre optic cable) or wireless (i.e. satellite). | |
| NT1 (Network Terminator Type 1) | |
| The NT-1 is physically connected between the ISDN board of your videoconferencing system and your ISDN phone line and converts the two-wire line coming from your telephone company into a 4-wire line. And provides network maintenance functions such line maintenance access, timing, and echo cancellation. NT1s may be built into other pieces of equipment or stand-alone. | |
| NTSC (National Television Standards Committee) | |
| United States' standard for scanning television signals that has been adopted by numerous other countries. Frames are displayed at 30 frames per second. (Other standards: PAL (Europe) and SECAM (France/former USSR)) | |