Moves, adds and changes – work that is typically not covered under maintenance agreements.

One million bits per second (different from MBps, or a million bytes per second).

A wiring arrangement which connects the telephone lines coming from outside on one side and the internal lines on the other. A main distribution frame may also carry protective devices as ...

A peripheral two-way speaker box option.

A unit of frequency denoting one million Hertz (i.e., 1,000,000 cycles per second).

A six-wire modular jack with the locking tab shifted off to the right side.

A device that converts signals transmitted over communication facilities; for example, converts analog voice signals to digital signals.

Customer-supplied music or announcements can be sent to parties on-hold on CO lines or the intercom.

Incoming information packets are assigned a “label”. These packets are forwarded along a “label switch path (LSP)” where each “label switch router(LSR)” forwards the packet based on the label contents. At ...

Average time that a user may reasonably expect a device to operate before an incapacitating failure occurs.

Average time required to restore a customer’s service after a network failure.

A technology that combines Layer 2 and Layer 3 (and possibly Layer 4) switching in a single internetworking device.

Test equipment that can be set up to perform a variety of electrical property measurements, usually including resistance, voltage and current.

Combining two or more signals into a single wave (the multiplex wave) from which the signals can be individually recovered.

The process of combining a number of individual channels into a common frequency band or into a common bit stream for transmission.