COMSPHERE 3800 Series Modems ± Model 3830

PSTN

Public Switched Telephone Network. A network

 

shared among many users who can use telephones

 

to establish connections between two points. Also

 

known as dial network.

pulse dialing

One of two dialing methods, in which telephone

 

numbers are sent as pulses (brief changes in

 

voltage or current intensity) across the telephone

 

line. Rotary telephones use pulse dialing.

register

A part of the modem's memory that contains

 

values that determine the modem's operating

 

characteristics.

remote loopback

A test that sends a signal to the remote modem to

 

test the local modem, the remote modem, and the

 

circuit between them.

result code

An asynchronous message (in either numbers or

 

words) that the modem sends to the DTE after

 

executing or trying to execute a command.

RJ11

A type of 6-position jack normally used with

 

permissive dial networks and telephone sets.

rotary

A TELCO service whereby multiple lines to a

 

customer premise share a common telephone

 

number.

S-Registers

Registers that contains information affecting the

 

modem parameters. All S-Registers must be

 

preceded by the AT prefix.

serial transmission

A way of transmitting data in which bits are sent

 

sequentially one at a time.

Sync Dial

A factory preset configuration area containing

 

configuration options most often used in

 

synchronous dial networks.

synchronous transmission

Data transmission that is synchronized by timing

 

signals. Characters are sent at a fixed rate. This

 

type of transmission is more efficient than

 

asynchronous transmission.

Glossary-10

August 1998

3830-A2-GB91-30

Page 124
Image 124
Paradyne 3830 manual Pstn