Nortek Security and Control KB

How do I change the Hub Modem ring settings?

The following are instructions for connecting your Hub Modem to your PC for setting the modem string.

Before getting started you must disable remote communication in your module: 31 # 8 # 0 # **

USB Converter to Hub Modem Connection

Power Modem with 12VDC power supply to V+ and V- terminals.

Converter to Hub Modem:
  • Green Wire to P2 Blue Terminal
  • Blue Wire to P2 Gray Terminal
  • Black Wire to P2 Green Terminal

COM port to Hub Modem Connection

Power Modem with 12VDC power supply to V+ and V- terminals.

You need a DB connector, 6-foot cord and external RJ-11 jack.
  • Black wire to P2 Blue terminal
  • Green wire to P2 Green terminal
  • Red wire to P2 Gray terminal

USB Converter to Backplane Connection

Leave modem plugged onto backplane and set SW2 to Remote Setting. Remove the Max module but leave SW1 in the ON position.

USB Converter to Backplane:
  • Green Wire to A1
  • Blue Wire to A0
  • Black Wire to GND

COM port to Backplane Connection

Leave the modem plugged into the backplane. Remove the Max module, but leave SW1 in the ON position. Using DB connector plug the 6-foot cord into RJ-11A and set SW2 to Remote Setting.

Hyperterminal Settings
  • Bits per second: 1200
  • Data bits: 8
  • Parity: None
  • Stop bits: 1
  • Flow control: None

When using a serial COM port you must select the COM port you are connecting to. When using a USB port you must verify the COM port number in device manager windows assigns to your converter.

Hyperterminal AT commands

To set modem to answer on one ring enter the following commands in hyperterminal:

  • AT <enter> Wait for OK result
  • ATS0=1&W0 <enter> Wait for OK result
  • Exit hyperterminal
Note: For a different number of rings change the 1 in the command about to the desired number of rings. For example for 2 rings type ATS0=2&W0.
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