US Robotics Courier V.evertything

The V.everything is a very nice (and somewhat expensive) Modem. But you do get what you pay for.

The V.everything modem has a bank of dip switches that allows you to configure the modem without having to use hyperterminal. See also the flow control page.

Settings of Dip switches

    The following list is the name of the setting and the DIP switch setting, please note that all of the settings are turned ON. For example We want Echo off-line commands and this is done by changing switch 4 to the OFF position

  1. DTR: Should be DTR Always on (ON)
  2. Verbal Result codes (OFF)
  3. Display Result codes (ON)
  4. Echo off-line commands (OFF)
  5. Do not Auto Answer on ring (OFF)
  6. Normal Carrier Detect (OFF)
  7. Display all result codes (ON)
  8. Enable AT Command set (ON)
  9. No Disconnect with +++ (ON)
  10. Load NVRAM Defaults (OFF)
    Note that the system will not work reliably if the setting is Load &F0
     

* Can be on if using a data collector to start the base. But it is better to have it this way so the modem can be turned reset, if not using a data collector
 

Using it a base station:

With a data collector

The Init String should be AT &B1 &S5 S0=1.

Everything will work correctly.

The &B1 should be in the default configuration, it is added to the init string for safety.

Without a data collector

    The above DIP switch settings, will allow the modem to be used as a base station modem without the need for it to be configured using a data collector. The only thing you will have to do is set the baud rate for the modem and the CTS behaviour

    You will have to connect the modem to hyperterminal once to set the baud rate that it should talk to the receiver.

    To do this connect to hyperterminal at the desired connection baud rate, 19200 or 38400 is recommended. (Always 8 bits no parity)

    Type

    ATZ
    The modem should reply with OK

    AT &S5

    The modem should reply with OK


    Type AT&W
    The modem will reply with OK
    The modem has now been set-up and will default to that baud rate when used in the future.

Notes

    This modem, (and a number of other land line modems), will hang up if they are sent data by the receiver while they are answering the phone. Since they receiver is always sending data to the modem if will not ever be able to answer the phone.

    This means that we must stop the receiver sending data until the modem has answered the phone.

    The US robotics modem has an option to have CTS follow Carrier Detect (&S5) using this option will allow the hardware flow control from the 5700 receiver to not send data automatically.

    For the 4700/4800 you need to

    Loop CD (D-9 Pin 1) to RTS (D-9 Pin 7) (37779 Rev A)
    Loop CD (D-9 Pin 1) to CTS (D-9 Pin 8) (37779 Rev B)

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