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2. Unit Description
2.1. Front Panel
À
ON Indicator: Lights when power is applied to the unit.
Á
RDY: Flashes to indicate that the unit is ready to receive calls or enter the Command
Mode.
Â
PASS: Lights when a caller has entered a valid password and has been allowed to access
the connected device.
Ã
DCD: Lights when DCD is high at the Modem Port.
Ä
RXD: Lights when RXD is high at the serial Modem Port.
Å
TXD: Lights when TXD is high at the serial Modem Port.
Æ
RTS: Lights when RTS is high at the serial Modem Port.
Ç
CTS: Lights when CTS is high at the serial Modem Port.
È
DTR: Lights when DTR is high at the serial Modem Port.
Notes:
• Normally, the DTR signal must be high in order for the modem to communicate
with the secure device. If the DTR signal is low, the SRM-100 will prompt callers
to enter a password, but will disconnect when a valid User Password is entered.
• When the Ignore DTR option (See Section 5.3) is enabled, the SRM-100 will
ignore the DTR signal at the serial Modem Port. This allows the serial Modem
Port to be connected to a device that does supply a DTR line.
2-1
Figure 2.1: Front Panel (Not to Scale)