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- Newsgroups: comp.sys.ncr
- Path: sparky!uunet!gatech!hubcap!ncrcae!casey.ColumbiaSC.NCR.COM!brown
- From: brown@casey.ColumbiaSC.NCR.COM (Ed.Brown)
- Subject: Re: What is In House DLC ?
- Message-ID: <1993Jan26.085522.19796@ncrcae.ColumbiaSC.NCR.COM>
- Keywords: ncr dlc datacom
- Nntp-Posting-Host: casey.columbiasc.ncr.com
- Organization: Your Organization Here
- References: <C1755r.G0q@ahwau.ahold.nl> <1993Jan25.100740.12113@ncrcae.ColumbiaSC.NCR.COM>
- Date: Tue, 26 Jan 93 13:55:22 GMT
- Lines: 19
-
- In article <1993Jan25.100740.12113@ncrcae.ColumbiaSC.NCR.COM>, wescott@yesac.ColumbiaSC.NCR.COM (Mike.Wescott) writes:
- |> In article <C1755r.G0q@ahwau.ahold.nl>, bart@ahwau.ahold.nl (Bart Loeff) writes:
- |> |> I wonder if anybody has any info on the In House DLC port of an NCR Tower
- |> |> T32/400 and T32/450.
- |> |> I know it is being used to connect POS-systems (like NCR2126) to the Tower.
- |> |> Any idea how this thing works ? Is it some sort of synchronous (SDLC/HDLC)
- |> |> port ? Is it standard or proprietry NCR ? What kind of protocol is used on
- |> |> this datalink ?
- |>
- |> In-House DLC s a direct-connect communications link with a proprietary
- |> (i.e. non-standard, I don't think there are any secrets there) electrical
- |> interface. The link-level protocol is usually an Async Response Mode
- |> HDLC interface. I think is runs at 64Kbps.
- It runs at 48Kbps over a four wire tranformer coupled direct-connect
- communications link. The data is Manchester encoded for receive clock
- recovery.
- --
- - Ed Brown
- ed.brown@ColumbiaSC.NCR.COM
-