Digium TE820 User Manual download pdf (Page 73)

Appendix C Glossary and Acronyms

PTMP Point-to-Multipoint

A connection where data is broadcast between more than two endpoints.

PTP Point-to-Point

A connection restricted to two endpoints.

PTT Post, Telegraph, and Telephone

The government agencies in many countries that traditionally operated

and monopolized the public postal, telegraph, and telephone services.

QoS Quality of Service

A set of quality requirements for telephone service.

RBOC Regional Bell Operating Companies

The creation of Regional Bell Operating Companies were a result of

AT&T's telephone monopoly being broken up in 1983.

REN Ringer Equivalence Number

An arbitrary value which denotes the electrical load a telephone ringer has

on a line.

RJ11

A six-pin jack typically used for connecting telephones, modems, and fax

machines in residential and business settings to PBX or the local

telephone CO.

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Digium TE820 User Manual Page 73