With products such as FileMaker Pro and ClarisWorks that can read in data files created on a different type of computer, it is sometimes desirable to transfer the file between a PC and a Macintosh via a modem. The data files can be sent to the other type of computer and opened directly in the program's counterpart on the other platform without any sort of file translation. However, if you need to transfer files this way, you should ensure that the following holds true:
Whether transferring the file by modem or a network transfer program such as FTP, make sure that the file is not compressed. An extension on the filename of .SIT, .CPT, or .DD from the Macintosh, or .ZIP or .ARC from the PC would indicate that the file is compressed.
Via Modem:
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1. The Macintosh communications software and the PC / Windows communications software must both be able to send and receive files via the same protocol, such as XMODEM, ZMODEM, or Kermit.
2. There are two possible types of "binary" file transfers on Macintosh computers. One is called MacBinary, and is used mainly when transferring files between two Macintosh computers. A more generic file transfer format is called Binary, and should be used when transferring files between Macintosh computers and non-Macintosh computers.
3. From the PC, the binary file type should be used.
4. As with all other modem communications, ensure that the two machines have are set to the same baud, parity, etc.
Via FTP:
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TCP/IP users using FTP to transfer files should establish their connection in the normal fashion. Then, also follow steps 2 and 3 above, so that FTP can transfer the file in straight binary mode, rather than MacBinary mode.
For more information, consult the documentation that comes with your communications software package of choice.