eLine ELC-576ET, Manual, Page: 39 / 43

On-Hook - The condition when the modem has not picked up the telephone line; the telephone is hung
up.
On-Line -
A carrier signal link with a remote modem has been established; communication is in
progress.
On-Line State - A modem state in which the modem is connected with a remote modem. Data can
be sent or received from the remote modem in this state. No commands will be accepted from the
modem except the escape command which will bring the modem into the on-line command state.
On-Line Command State - A modem state in which the modem can accept or execute commands
from an asynchronous computer or terminal while remaining connected with the remote modem. The
user can return the modem to the on-line state by issuing the AT0n command or put it into the off-line
command state by issuing command such as ATZ or ATH.
Parity -
An error-checking method by which the modem verifies that the data just sent is correct.
pps - Pulse per second.
Profile -
A list of default settings.
Protocol - A technical specification for serial communications; the protocols supported by the
modem are listed in Appendix B.
PSK - Phase Shift Keying.
Pulse Dialing - A dialing form in which each digit is represented by a series of pulses. Rotary
telephones all use pulse dialing.
QAM - Quadrature Amplitude Modulation.
Result Codes -
The response the modem returns to the screen upon executing a command.
RAM -
Random Access Memory.
ROM -
Read-Only Memory. A chip inside the modem which stores the factory default settings. This
memory cannot be changed.
RTS - Request To Send.
RX -
Reception.
S Register -
RAM locations in the modem which store the active configuration.
Serial Port - See COMx.
TCM -
Trellis-Coded Modulation.
Touchtone Dialing - A dialing format in which each digit is represented by a musical frequency.
TX -
Transmission.
Appendix E: ASCII CODE TABLE
Decimal Hex Value Decimal Hex Value Decimal Hex Value Decimal Hex Value
000 00 NUL 032 20 (space)064 40 @ 096 60 '
001 01 SOH 033 21 ! 065 41 A 097 61 a
002 02 STX 034 22 " 066 42 B 098 62 b
003 03 ETX 035 23 # 067 43 C 099 63 c