EV6240 Datasheet, PDF (19/47 Pages) CML Microcircuits – Opto-Isolated serial interface capability

Evaluation Kit for CMX624/CMX644A
EV6240
The send text file facility can also be used for AT Command Scripts.
Note: some terminal emulators have been found not to support full hardware flow control when
transferring text files. This could result in data loss when using this facility. If this problem is
experienced users should try using a different terminal emulator
The following AT commands can be entered on a PC running Windows terminal emulator software,
such as the ‘Hyper Terminal’ program supplied with Windows ’95 or NT systems.
Basic AT Commands
Command
A
Description
Answer Command
The modem will go off-hook, transmit the answer tone, and wait for a carrier
from the remote modem.
Syntax: ATA<CR>
A/
Re-Execute Previous Command Line
Re-executes the last issued command line. This command does not require
the AT prefix or a carriage return.
Syntax: A/
Bn
Select Communications Standard
Selects the communications standard specified by the parameter n.
Syntax: ATBn<CR>
Modifier Usage
n=0 Selects ITU-T Standard (default).
n=1 Selects Bell Standard.
Dn
Dial Command
This command directs the modem to go off-hook, dial according to the string
entered and attempt to establish a connection. Number of DTMF digits
entered cannot exceed 16.
Syntax: ATDn1n2n3…….n16<CR>
Modifier Usage
n1..16=0-9, *, #, A-D DTMF digits.
n1=L Re-dial last number.
En
Echo Command Characters
Syntax: ATEn<CR>
Modifier Usage
n=0 Disables the echoing of commands to the screen
n=1 Enables echoing of commands to the screen (default).
19
© 1999 Consumer Microcircuits Limited
UM6240/3