0-9

0 or 0- dialing
    Allows a caller to dial zero to get an operator. For non-emergency
billing purposes, the caller pays extra to have the operator input
billing information and dial the call.

0+ dialing
    An operator-assisted, long-distance call that is charged to the calling
party. The 0 is followed by the destination number and/or billing
instructions. The caller will hear either a bong as a cue to input
calling card digits or a voice with more detailed instructions.

00+ or 00- dialing
    Allows a caller to get an AT&T operator in areas in which dialing only
one zero would connect the caller with the local operator.

1+ dialing
    Allows a caller to dial 1 plus the long-distance number for calls
within the North American Numbering Plan area. IntraLATA calls are
carried by the local telephone company. InterLATA calls are carried by
the caller's primary carrier, or by AT&T if equal access has not come
to the caller's area yet.

10+ XXX dialing
    Allows a caller to send calls over a carrier other than a caller's
primary carrier by dialing 10+XXX then the long-distance number, where
XXX is the 3-digit carrier code of the alternative long-distance
company, called a secondary carrier. Available only to equal access
customers.

100BaseT
    The Institute of Electrical and Electronic Engineers (IEEE) standard
from proposals by the Fast Ethernet Alliance (including 3Com and
SynOptics). It will support Category 3,4 & 5 unshielded twisted pair
(UTP) cabling.

100BaseVG-AnyLan
    A competing proposal to 100BaseT (promoted by Hewlett Packard, IBM and
Proteon among others) to the the Institute of Electrical and Electronic
Engineers (IEEE) for a 100Mbit/s standard over voice grade unshielded
twisted pair (UTP) the cable most users already have installed in
existing 10BaseT systems. Based on Quartet Signaling and demand
priority protocol, it preserves the infrastructure and will need only a
new hub and upgraded adapters in PCs/work stations. It claims support
for Category 3,4 & 5 UTP cabling for both Ethernet and Token Ring.

103
    Officially, 'Bell 103' which is the standard controlling transmission
at 300 bps in the United States.

10base1
    The technical specification based on the Institute of Electrical and
Electronic Engineers (IEEE) 802.3 standard (StarLAN) that runs on
baseband media at 1 Mbps. StarLAN limits cable segments to 500 meters.

10base2
    The Institute of Electrical and Electronic Engineers (IEEE) 802.3
Physical Layer Specification for thin cable Ethernet (also called
Cheapernet or Thin Ethernet) using RG58 standard coaxial cable. 10BASE2
is nomenclature for 10 Mbps, baseband, 185 meter maximum segment
length.

10base5
    The Institute of Electrical and Electronic Engineers (IEEE) 802.3
Physical Layer Specification for thick cable Ethernet using
double-shielded RG-11 coaxial cable. 10BASE5 nomenclature stands for 10
Mbits/s data rate, baseband, at 500 meter maximum segment length.

10BaseF
    The fiber-optic cable standard currently being developed by the
Institute of Electrical and Electronic Engineers (IEEE) for Ethernet
network environments.

10baseT
    The Institute of Electrical and Electronic Engineers (IEEE) 802.3
Physical Layer Specification for twisted-pair Ethernet using unshielded
twisted-pair wire at 10 Mbps rather than StarLAN's 1 Mbps. 10base-T is
nomenclature for 10 Mbps, baseband, twisted-pair cable.

10XXX codes
    Long-distance carrier access codes.

16-bit sound
    Sound which is approximately equal in quality to standard audio Cds.
See sample size for further explanation.
sample size

1base5
    The Institute of Electrical and Electronic Engineers (IEEE) 802.3
Physical Layer Specification for StarLAN Ethernet using twisted-pair
wires. 1BASE5 is nomenclature for 1 Mbps, baseband, 500 meter maximum
segment length.

212A
    Officially, 'Bell 212A' which is the standard controlling transmission
at 1200 bps in the United States.

2W
    See two-wire circuit (2W)

3-in-24 stress pattern
    Toughest pattern available for testing repeaters. Consists of 3 ones in
24 bits. Meets the T1 requirements of the minimum 12.5 percent ones
density and no more that 15 zeros in a row (F0100 0100 0000 0000 0000
0100).

4B/5B encoding
    The signal encoding method specified by the fiber-distributed data
interface (FDDI) standard where each set of four bits is encoded as
five bits, as compared with the Manchester encoding method, which
requires eight bits of encoding for each set of four bits.

4W
    See four-wire circuits (4W)

7 layer protocol
    A telecommunications architecture proposed by the International
Standards Organization (ISO).

8-bit sound
    Sound which is approximately equal in quality to broadcast radio sound.
See sample size for further explanation.

800
    See 800 service

800 Number Administration and Service Center
    The organization that administers the Service Management System's
SMS/800 system for the reservation, registration and administration of
all North American 800 numbers for all carriers. See responsible
organization and SMS/800.
responsible organization (RO and resporg)
SMS/800

800 number portability
    Enables business customers (i.e., those doing business in both Canada
and the U.S.) to maintain the same 800 number, regardless of which
carrier they choose, anywhere in North America.

800 service
    Allows a caller to dial a long-distance telephone number without
incurring a charge for the call. The call is paid for by the party
offering the 800 number. Synonym: Inward wide area telecommunications
service (WATS).
wide-area telecommunications service (WATS)

802.3
    See IEEE 802.3

802.5
    See IEEE 802.5

900
    See 900 service or 976 numbers

900 service
    Allows callers to receive recorded audio information by calling a 900
number. Messages last from 60 seconds to a continuous live hookup. This
service also allows callers to vote or "make a choice" by dialing one
of two 900 numbers. 900 calls are typically billed to the caller at
much higher rates than regular calls.

911
    The three-digit number designated for public use throughout North
America to report an emergency or request emergency services
assistance, such as police, fire department or ambulance. See Section
2: Bell Neutral Answer Service.

976
    See 900 service or 976 numbers

976 numbers
    Allows callers to call 976-xxxx and listen to recorded messages such as
horoscopes, "adult" dialogue, stock market quotes and/or sports
reports. The local telephone company charges callers a fee that is
split between the local telephone company and the service provider.