RMM Rack Mount Modem; User's Guide
AA
On
(Auto Answer)
Off
Flash
CD
On
(Carrier Detect)
RD
Flash
(Receive Data)
SD
Flash
(Send Data)
TR
(Data Terminal On
Ready)
CS
On
(Clear to Send)
Answer mode only: Modem is answering a call and DIP Switch 5 is UP (Enable Auto Answer), or register S0 is set to 1 (Auto Answer, 1 Ring).
No activity, or modem is originating a call.
Incoming call.
A valid data carrier signal has been received from a remote modem, and Dip Switch 6 is UP (Normal Carrier Detect). Modem is ready to transmit data. The CD Indicator will remain ON constantly if Dip Switch 6 is DOWN (Carrier Detect Override).
Modem is sending result codes or passing received data bits.
Computer is sending data bits.
Modem is receiving DTR signal from computer. The TR indicator will only function when Dip Switch 1 is UP (Normal DTR). Remains ON constantly if Dip Switch 1 is DOWN (DTR Override).
Hardware flow control is enabled (&H1, &H3), modem is waiting for low CTS signal.
3. Operation
The following commands can be used to display current configuration status and various help menus:
View Modem Setup: | ATI4 |
Basic Help Menu: | AT$ |
Dial Command Help Menu: | ATD$ |
Configuration Command Help Menu: | AT&$ |
List of | ATS$ |
Reset Modem to Default Profile 0: | ATZ3 |
When the View Modem Setup command (ATI4) is invoked, the RMM will display a status screen as shown below.
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