Zhone Technologies IMACS-200 manual Osi, Pam, Pbx, Pcm, Pdu, Plar, Plr, Pop, Pots, Ppo, Ppp

Out of Service, an indication that a system element has failed.

OSI

Open Systems Interconnection

PAM

Pulse Amplitude Modulation

PBX

Private Branch Exchange, a small phone switch inside a company.

PCM

Pulse Code Modulation

PDU

Protocol Data Unit

ping

A program used to test IP-level connectivity from one IP address to another.

PLAR

Private Line Automatic Ringdown

PLR

Pulse Link Repeater

POP

Point of Presence, usually a telephone carrier office.

POTS

Plain Old Telephone Service

PPO

PPhone Foreign Exchange Office port. An interface at the end of the FX line connected to DMS SuperNode Switch.

PPP

Glossary -15