| ADPCM2 |
Adaptive Differential Pulse Code Modulation |
| ALPS |
Automatic Loop Protection Switching |
| DPC 324-W4 |
Digital Program Channel (8kHz/15kHz) |
| DSDCU |
Dual Synchronous Data Channel Unit |
| E&M |
Earth and Magnet Channel Cards |
| FDLP |
Facility Data Link Processor |
| FIND |
Fiber Interface Network Device |
| FXS/FXO |
Foreign Exchange Subscriber/Office |
| MXS/MXO Series |
Digital Phone Extender for Northern Telecom's Meridian(tm)
Digital Deskset |
| OCUDP |
All Rate Office Channel Unit Data Port |
| Ringing Generator |
Modular Ring Generator for D/I Mux III (30333-101/121) |
| RLB |
Remote Lan Bridge |
| SDM, pSDM |
Subrate Data Multiplexer & Premium Subrate Data Multiplexer |
| SO/S |
Smart Omni OrderWire/Station |
| TTU |
Tandem T1 Unit |