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Can you give me an explanation of the NDM transmission?

 
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sunitharamu21

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Joined: 25 Apr 2006
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PostPosted: Thu Jun 01, 2006 5:09 pm    Post subject: Can you give me an explanation of the NDM transmission?
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Can anybody tell me when we go in for a NDM transmission and when we we would have to go in for a FTP transmission? What are the other methods of transferring a file from one mainframe to another? Are there any others, other than NDM and FTP?
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superk

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PostPosted: Fri Jun 02, 2006 1:47 am    Post subject: Re: Can you give me an explanation of the NDM transmission?
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Take a look at this previous post on the same topic.
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superk

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PostPosted: Fri Jun 02, 2006 2:04 am    Post subject: Re: Can you give me an explanation of the NDM transmission?
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sunitharamu21 wrote:
What are the other methods of transferring a file from one mainframe to another? Are there any others, other than NDM and FTP?


Depending on the nature of the business and of the data, there are other file transfer protocols still in use.

One of the original protocols is IBM's Binary Synchronous (BSC) protocols, originally designed for the transfer of data from a host to a terminal over a switched (i.e. telephone) connection. The two protocols are 2780 and 3780. Later, after the SNA networking protocol became commonplace, the 3770 SDLC protocol was introduced for file transfers across a switched (i.e. telephone) SNA network (the SNI network protocol).

Meanwhile, down in the world of PC's and Unix and other computer systems, file transfer protocols were being introduced to allow data to be exchanged over a switched (i.e. telephone) network. These are the Asynchronous protocols (XMODEM, YMODEM, XMODEM-1K, ZMODEM, and Kermit). These may also be used providing that a protocol converter is employed to convert the Asynchronous protocols (which all employ the ASCII character set) into a Synchronous protocol using the EBCDIC character set (2780/3780/3770).

IBM has also employed to use of their own data exchange technologies for SNA-Network connected machines, specifically RJE (Remote Job Entry), NJE (Network Job Entry) and BDT (Bulk Data Transfer). If you work for a large financial institution, you may still be required to use BDT to transfer funds between you and a Federal Reserve Bank.
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