Comtrol RM-4 - Manual (Page 13)

Hardware Installation and Specifications RocketModem IV: 2000468 Rev. A - 13
Testing Two Modem Ports
Testing Two Modem
Ports You can use this procedure to test two modem ports. This example requires that
phone lines be connected to both Ports 1 and 2.
1. Select Port 1.
2. Enter AT&F0 to initialize the modem to factory default parameters.
3. Enter ATS0=1 to direct the modem to answer the phone on the first ring.
4. Press Esc to return to the port menu.
5. Select Port 2.
6. Enter AT&F0 to initialize the second modem.
7. Enter ATDxxx xxxx (where xxx xxxx is the phone number of the line connected
to the first modem).
Watch and wait. The Port 2 modem should dial the Port 1 modem and you
should eventually see the CONNECT message.
8. Press Esc.
9. Select Port 1. You should see RING and CONNECT messages.
10. Type ATA. You should now see CONNECT messages.
11. Any keys you press while looking at Port 1 display when you look at Port 2.
Likewise, any keys you press while looking at Port 2 display when you return
to the Port 1 display.
12. To exit, on either of the ports enter the escape sequence +++. This enables you
to enter ATH to hang up, or any other valid AT command string.
If you do not hang up, you can return to the still-active connection by entering
ATO.
13. To exit terminal mode and return to the port menu, press Esc.
FCC Notices
Radio Frequency
Interference (RFI)
(FCC 15.105) This board has been tested and found to comply with the limits for Class A digital
devices pursuant to Part 15 of the Federal Communications Commission rules.
The RocketModem IV generates, uses, and can radiate radio frequency energy, and
if not installed and used in accordance with this board, may cause harmful
interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, you are encouraged to try and
correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the distance between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Labeling
Requirements (FCC
15.19) The RocketModem IV complies with part 15 of FCC rules. Operation is subject to
the following two conditions:
• This device may not cause harmful interference, and
• This device must accept any interference received, including interference that
may cause undesired operation.