Glossary

 

(1) or off (0), depending on the serial communications

 

parameters set in the UART chip.

 

The following lists the available parity parameters and their

 

meanings:

 

Odd - Parity bit set so that there is an odd number of 1 bits

 

Even - Parity bit set so that there is an even number of 1 bits

 

None - Parity bit is ignored, value is indeterminate

PCMCIA

Personal Computer Memory Card International Association.

 

An organization consisting of some 500 companies that has

 

developed a standard for small, credit card-sized devices,

 

called PC Cards. Originally designed for adding memory to

 

portable computers, the PCMCIA standard has been

 

expanded several times and is now suitable for many types of

 

devices including network cards (NICs).

 

The PCMCIA 2.1 Standard was published in 1993. As a

 

result, PC users can be assured of standard attachments for

 

any peripheral device that follows the standard.

Port

A port is a 16-bit number (the allowed range being 1 through

 

65535) used by the TCP and UDP protocols at the transport

 

layer. Ports are used to address applications (services) that

 

run on a computer. If there was only a single network

 

application running on the computer, there would be no need

 

for port numbers and the IP address only would suffice for

 

addressing services. However, several applications may run

 

at once on a particular computer and we need to differentiate

 

among them. This is what port numbers are used for. Thus, a

 

port number may be seen as an address of an application

 

within the computer.

PPP

Point-to-Point Protocol. This protocol is a way to connect

 

your computer to the Internet over telephone lines. PPP is

 

replacing an older protocol, SLIP, as it is more stable and has

 

more error-checking features.

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Cyclades 2.3.0, ACS48 user manual Pcmcia, Port, Ppp