Multi-Tech Systems 7500 - Manual (Page 133)

ION 7500 / ION 7600 User’s Guide Internal Modem Connections
Chapter 5 - Features and Applications Page 133
Modem Initialization Strings
Refer to the technical note Modem AT Commands for a complete list of AT
commands for both Conexant and Multi-Tech modems.
N OTE
The technical note also contains instructions on how you can determine your meter’s modem type based
on the meter’s serial number.
Adjusting the Modem Initialization String for CTR-21 Compliant modems
The table below shows the strings to add to the end of your modem configuration
string setup register for each of three possible problems.
C AUTION
A Conexant Modem does not support Pulse dialing. The Conexant Modem should be the only device on
the telephone line. Attaching devices on the same line may cause one or more of these devices to operate
incorrectly.
If your local modem (not the internal modem) is not already set up, configure it
with the Remote Modem Configuration Utility according to the instructions in the
online help. After the meter is installed and the internal modem is connected to the
telephone network, the Comm 3 module can be configured using the meter’s front
panel or ION software. To learn how to connect the internal modem to the
telephone network, consult your meter’s Basic Setup and Installation Instructions.
N OTE
The online ION Enterprise Help contains details on: commissioning an ION network, managing modem
connections, setting up periodic dial-out, and configuring remote site event notification.
Problem Add to Modem Initialization String
Does not answer
(modem does not detect ring tone)
*NC70
Does not dial
(modem does not detect dial tone)
In order of preference:
*NC70, *NC70X0, *NC8 (Italy only)
Does not detect busy signal *NC70