User Manual

Applications
RFI-9256 Radio Modem User Manual Page 43 of 96
In order to establish a dial-up connection through a back-to-back repeater, an extension to the dialling
system is used. When dialling from the master unit in Figure 17, the following dial strings are used:
 ATD30400000<CR> : Establishes a dial-up connection between the master and slave with address
4000 main ports through the back-to-back repeater with address 30.
 ATD30500091<CR> : Establishes a dial-up connection between the master and the remote menu
system on the slave with address 5000 through the back-to-back repeater 30.
 ATD200001<CR> : Establish a connection with the auxiliary port of slave 1. As there is no back-to-
back repeater involved in the connection the format does not change.
 ATD3091<CR> : Establishes a dial-up connection from the master to the dial-up repeater slave
unit’s remote menu system.
 ATD3000<CR> : Establishes a dial-up connection from the master to the main port of the repeater
slave unit. This will in effect put the master radio in communications with the Hayes AT command
mode on the repeater master unit.
These last two dial strings illustrate how to access the terminal menu on either of the back-to-back repeater
units. In order to access the repeater slave’s terminal menu, dial up the menu system as if it were any other
slave. In order to access the repeater master’s terminal menu dial up the main port of the slave (the port that
has been connected through to the master unit), then use the master units AT command interface to bring up
the menu system via the AT? command.