Paradyne 3800PLUS - Manual (Page 208)

COMSPHERE 3800Plus Modems
Glossary-6 October 1998 3980-A2-GB30-40
The state of a modem that is connected to and communicating with another modem.
The modem is in a state where it is ready to transmit a call. In a dial network, it is the modem
that makes the call. In a leased-line network, it is one of two sides of the network that is selected
to be the originating modem.
A way of checking data accuracy by counting the number of bits that have a value of one.
Private Branch Exchange. Telephone switching equipment dedicated to one customer. A PBX
connects private telephones to each other and to the public dial network.
Personal Computer.
A dial modem operating mode characterized by a fixed output power level of –9 dBm. It is one of
two possible modes of operation for modems connected to dial lines (see programmable
interface).
Plain Old Telephone Service. Standard telephone service over the PSTN, with an analog
bandwidth of less than 4 KHz.
A test that checks most hardware components when power is applied to the device or a reset is
initiated.
A three-digit code indicating the modem’s highest VF data rate.
A dial modem operating mode characterized by an output power level (–12 to 0 dBm) set by a
programming resistor in the jack. It is one of two possible modes of operation for modems
connected to dial lines (see permissive interface).
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.
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.
A part of the device’s memory that holds stored values.
Files, devices, and users not attached to your local DTE.
A test that sends a signal to the remote modem to test the local modem, the remote modem, and
the circuit between them.
An inverse video symbol that indicates the modems are operating in Remote mode.
An initialization of the device that occurs at power-up or in response to a reset command.
An asynchronous message (in either numbers or words) that the device sends to the DTE after
executing or trying to execute a command.
A type of 6-position jack normally used with permissive dial networks and telephone sets.
A type of 50-position jack normally used with permissive dial networks providing the appropriate
conductors for up to eight telephone lines.
A telephone company service whereby multiple lines to a customer site share a common
telephone number.
An Electronic Industries Association’s standard defining the 25-position interface between data
terminal equipment and data communications equipment.
Request to Send. A signal from the DTE to the device, indicating that the DTE has data to send.
V.24 circuit 105.
Synchronous Data Compression. A proprietary compression and error correction protocol.
online
Originate mode
parity
PBX
PC
permissive interface
POTS
power-up self-test
product code
programmable
interface
PSTN
pulse dialing
register
remote
remote loopback
remote mode
indicator
reset
result code
RJ11C
RJ21X
rotary
RS-232-D
RTS
SDC