Do not send both Enter/Return and Line Feed as the terminating character. The Model 24SII DES looks for either Enter/Return or Line Feed as the terminating character, but not both. If you send both Enter/Return and Line Feed as part of the disconnect sequence, the Model 24SII DES will not recognize the disconnect sequence unless there is a two second delay between Enter/Return and Line Feed.

If there is not a two second delay prior to sending the disconnect sequence and a two second delay after sending the disconnect sequence, the entire disconnect sequence will become invalid and will be passed through to the other computer device. The timing between characters in the Port Select Code should not exceed one second, otherwise the Port Select Code will become invalid and the characters will be passed through to the device connected to the other computer port.

The Model 24SII DES will respond to a valid disconnect sequence by sending an Off Line message to the user requesting the disconnect.

￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿

File transfer can be achieved with a computer-to-computer connection through the Model 24SII DES as long as the communicating computers are each running a third-party communications software package. Note that both computers must be serial.

Following is a partial list of software packages that support file transfer: CrossTalk, PC Talk XVI, and Mirror.

Note that to effectively achieve file transfer, both computers should be using the same protocol, e.g., Kermit, Q-Modem, or X-Modem.

The port select sequence should be sent from within your

￿￿

communications package by using a macro or manually typing it out

so you can see the On Line or Busy message.

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HP 24SII manual