- PIC Code
Packet Switching -The
method used to move data around on the LANs, WANS and the Internet. In
packet switching, all the data coming out of a machine is broken up into
chunks, each chunk has the address of where it came from and where it is
going. This enables chunks of data from many different sources to
co-mingle on the same lines, and be sorted and directed to different
routes by special machines, i.e.
along the way. This way many people can use the same lines at the same
The result of combining (multiplexing) n number of
telephone channels into a single (or multiple) pair(s) wires. Example:
Mathematically, Pair Gain equals the total number of voice/data
channels, divided by the number of wire pairs used. Therefore, 4
channels (voice or data), over a single pair of wires, results into a "PairGain"
Acronym for "Primary IntraLata Carrier" code. A coded number
automatically attached to every number you dial. This code informs your
carrier to which carrier to route and bill for that telephone number.
The well known 1010-xyz numbers are a PIC Code. See further information
on this web site.
PID (Product ID)
-- Product ordering number assigned and used in PacBell. Number is
assigned after the product has been approved for purchase. Different
CLEI which is a
POP (Point Of Presence)
- Usually means a city or location where a network can be connected,
often with dialup phone lines. An Internet company's POP is the point
you call into, or connect to, for connection to that company's services.
a place where information goes into or out of a computer or devices of
some sort. E.g. the
serial port on a personal computer is where a modem would be connected.
POTS -- (Plain Old Telephone
Service) -- Popular term describing the
standard telephone company service in your home or office of which you
Old Telephone Service with Lifeline)
-"Lifeline" POTS is a basic telephone service designed to ensure
operation (especially voice) in case of an emergency, particularly
during an electrical power outage. POTS lines are powered from the CO
and do not require external power at the customer premises, so therefore
they are categorized as a "Lifeline".
PPP (Point to Point Protocol)
-- Well known as a protocol that allows
a computer to use a regular telephone line and a modem to make TCP/IP
connections for connection to the Internet. See Internet , SLIP , TCP/IP
PRI (Primary Rate Interface)
-- Used in referring to
on a T1...Same
as T1(on the physical layer), combines 24ea 64K channels into a single
pair of copper. See: BRI,