Modem definitions

56-k line

Access number
Acoustic coupler
Analog loopback
Answer mode
ARQ
Auto answer
Automatic repeat request

BAUD
BBS
Bits Per Second
BPS
Bulletin Board System

Carrier
CCITT
Characters per second
COM
Command state
Communications
Communications port
Communications program
Communications server
CPS
CTS

Data Communication Equipment
Data mode
Data Terminal Ready
Data transfer
Data transfer rate
DCE
Detect phase
Dial-up
Dial-Up Network
Digital loopback
Digital Simultaneous Voice Data
Download
DSVD
DTR
DUN

External modem

Fax/modem
Fax modem
FDHP

Handshake
Hayes compatible

Internal modem

Kilobaud

LAPM
Line adapter
Line speed
LNP
Local bypass
Local echo

MNP
Modem
MODIO
Modulator

Null Modem
Null-modem cable

Off-hook
Offline
On-hook
Online

PEP
Phone connector
PSTN
Public carrier
Python

RJ-11

Send-receive fax modem
Short-haul
Splitter

TAPI
Telecommunications
Terminal
Throughput
Transmit
TXD

UART
Unimodem
Upload

V.21
V.22
V.22bis
V.22bps
V.23
V.24
V.25
V.26
V.26
V.26bis
V.27
V.27bis
V.27ter
V.28
V.29
V.32
V.32bis
V.34
V.42
V.42bis
V86 mode
V.90
V.92

Xmodem
XMT

Ymodem

Zmodem