AT-VP504E FXO
93
D
Glossary
10 BaseT An Ethernet local area network which works on twisted pair wiring.
100 BaseT A newer version of Ethernet that operates at 10 times the speed of a
10 BaseT Ethernet.
A-Law The ITU-T companding standard used in the conversion between
analog and digital signals in PCM (Pulse Code Modulation) systems.
A-law is used primarily in European telephone networks and contrasts
with the North American mu (µ)-law standard. See also mu (µ)-law.
Area Code The preliminary digits a user must dial to be connected to a particular
outgoing trunk group or line. In North America, an Area Code has three
(3) digits and is used with a NXX (office code) number. For example, in
the North American telephone number 561-955-1212, the numbers are
defined as follows:
Outside North America, the Area Code may have any number of digits,
depending on the national telecommunication regulation of the
country. In France, for instance, the numbering terminology is defined
as xZABPQ 12 34, where:
Table 44: North American Numbering Plan
No.
Description
561
Area Code, corresponding to a geographical zone in a non-LNP
(Local Number Portability) network.
955
NXX (office code), which corresponds to a specific area such as
a city region.
1212
Unique number to reach a specific destination.
Table 45: France Numbering Plan
No.
Description
x
Operator forwarding the call. This prefix can be made of 4 digits.
Z
Geographical (regional) zone of the number (in France, there
are 5 zones). It has two (2) digits.
ABPQ
First 4 digits corresponding to a local zone defined by central
offices.
Summary of Contents for AT-VP504E FXS
Page 1: ...AT VP504E FXO H 323 Administration Manual PN 990 11592 10 Rev C VoIPTalk...
Page 16: ...Chapter 1 Introducing the AT VP504E FXO Administration Manual H 323 Version AT VP504E FXO 8...
Page 76: ...Chapter 5 Software Upgrade Administration Manual H 323 Version AT VP504E FXO 68...
Page 100: ...Appendix C Gatekeeper Registration Logic Administration Manual H 323 Version AT VP504E FXO 92...
Page 112: ...Index Administration Manual H 323 Version AT VP504E FXO 104...
