User's Manual

Modem Commands
To set the repeater modem in an adequate operational mode for the
current configuration, an initiation string consisting of a number of
modem commands have to be entered into the modem.
This initiation string is automatically generated by the CU board in the
repeater, provided the repeater is equipped with the K103/2 type CU
board (or a higher number).
For repeaters equipped with the K103/1 type CU board, the below detailed
initiation string should be used as default.
Be aware of that the optional RCUs based on PCMCIA interfaces require
different commands in the initiation string. Refer to the latest RCU
installation guide available from your local Allgon representative.
Default modem initiation string
The default modem initiation string is: atq0v1s0=0e0x4
The string is limited to contain maximum 39 characters.
Indispensable commands
Q0 Return result codes.
V1 Display result codes as words.
&S0 Assert DSR signal always.
Recommended commands
E0 Do not echo characters sent to the modem.
S0=1 Answer on the first ring signal.
&D2 An ON-to-OFF transition of DTR signal causes a modem hang up.
X4 Provide basic call progress result codes, connection speed, and busy
signal detection.
Commands to use if necessary
T Dials using tone method.
P Dials using pulse method.
&K3 Enable RTS/CTS local flow control. Recommended on line modem.
ALLGON System AB AR Repeaters & OMT32 Software – Repeater Operations
User’s Manual VD202 90/EN Rev. 1A 1999-07 10 - 51