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General System Programming
Adding an External Modem to a 2000 IPS CP31 CPU

The CP31 processor originally did not have a modem built in. Later revisions incorporated a modem, but for those with a CP31A, the lack of modem hampers remote support or emergency access requirements.

It is possible, however, to connect an external modem to the serial port of the CPU and use this to provide remote access into the CPU. Please note that the external modem must be programmable to setup auto answer - most serial modems have this function and can be programmed using a Null modem cable, connected to a computer with hyperterminal. Compatible modems include Mr Modem modems or US Robotics serial modems.

Equipment used:

  • Mr Modem model number: - MRI-1456 EVS –serial external modem
  • CP-31 Main processor wit 6.2 ver. 3.00 software load RS NORM- 4S CA-A NR-553924-107
  • Programming requirements:

  • 1) On the Modem you need to put the following Modem string ATS0=2 this is an auto answer string. This is a Auto Answer string that answer after 2 Rings
  • 2) On the NEAX CP-31 main processor the comm. Port needs to be set to 9600 bps .This is achieved by the following command CMD 40 Y=08 FD= 0 SD = CCC OR 4 (By setting CCC this sets the default setting which is 9600 bps)
    NEC 2000 IPS Dial Plan

    To define a dial plan you use Command 200 to define each number range as shown below:

    For example for extensions in the 2000 range would be defined by CM 200 > 2 : 804
    The dial plan can also be set through the GUI by selecting the Numbering Plan menu item and then selecting Station Number as illustrated below:
    Setting NEC 2000 IPS IP Address

    Q: How do you assign an IP address to the M606 NIC?

    A: From MATWorX select menu item System and then LAN Interface The following window will appear:



    Click on the Lookup button Insert the relevant IP Address, Subnet Mask and Default Gateway (if a Default Gateway is required).


    Click on the Update button to write the changes to the CPU. You will then be prompted to backup the customer data and restart the system. This is required and will stop call processing while the system restarts.


    You can also set the IP Address information using the following commands: CM 0B00 > 00 : IP Address ( e.g. 192168001005 ) CM 0B00 > 01Subnet Mask ( e.g. 255255255000 ) CM 0B00 > 02 : Default Gateway ( e.g. 192169001001 )

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