Agilent Technologies Auroraduet N1726A, Руководство пользователя, Страница: 484 / 507

Issue 01 - 06/99 A5 - 15
Appendix 5 - Glossary
Point to Point In Point to Point mode one Terminal
Equipment (TE) is connected at the end
of up to 1km of cable.
Port The physical access point into and out
of an electrical equipment or network.
PP Point to Point.
PRI Primary Rate ISDN.
Protocol A set of rules, usually defined by a
standards making body, for carrying
out a specific function such as exchange
of information between systems,
synchronisation, error checking, etc.
Examples of protocols are ETSI and
1TR6.
PSPDN Packet Switched Public Data Network.
PSTN Public Switched Telephone Network.
PTT National Postal, Telephony and
Telegraphy administration.
Public This is usually a network owned and
Network operated by a licensed
telecommunication authority, providing
a PSTN service to the public.
Pulse Code A method of converting analogue
Modulation signals into digital signals.
QAM Quadrature Amplitude Modulation. A
combined modulation technique to
obtain high speed transmission over
voice-grade lines.
RAM Random Access Memory.
Appx5.PM6 17/06/99, 09:57 15