GE Medical Systems MAC 1200, Operator'S Manual, Page: 81 / 180

Revision B MAC 1200 5-21
2012250-022
Recording in 12 Lead Mode: ECG Transmission
AT Command for Establishing a Communication Link
The following is an example of a dial string for a modem connected to a
branch (PBX system) and dialing a modem via the public telephone
network, using the touch tone mode.
AT Command for Termination of the Communication
The communication is terminated in two steps.
First, the MAC 1200 sends an escape command to return from the on-
line state to the command state. Then the hangup command follows.
Symbol Description
AT Prefix that precedes every command line
DT Touch tone dial mode
xxx After DT, enter the characters for access to the public telephone network
(e.g. 0)
W W, placed after a number, tells the modem in a PBX system to wait for the
dial tone of an outside telephone line
dial string: ATDTOW
Symbol Description
+++ Escape command
AT Prefix that precedes every command line
H Hangup command
hangup string: +++ATH