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- Organization: Bar-Ilan University Computing Center, Israel
- Date: Sun, 24 Jan 1993 13:20:27 IST
- From: <P82045@BARILVM.BITNET>
- Message-ID: <93024.132027P82045@BARILVM.BITNET>
- Newsgroups: comp.dcom.servers
- Subject: Re: Can a server output to serial line?
- References: <1993Jan22.201139.25448@bnlux1.bnl.gov>
- Lines: 93
-
- In article <1993Jan22.201139.25448@bnlux1.bnl.gov>, foxworth@bnlux1.bnl.gov (Bob
- Foxworth) says:
- >
- >We have a Xyplex Maxserver 4500 containing two MX2120A 8-port
- >terminal server cards. Right now I have them wired to ports on a data
- >PBX linecard which are configured as a destination class, so that a user
- >of the data PBX can select 'xyplex' as a destination, and then reach
- >one of the Xyplex's serial ports which is acting as an input. Then the
- >user reaches the network to do a LAT or telnet connect to wherever. They
- >are DTE and the PBX is using a DCE type fanout cable to its line card.
- >
- >Someone here has asked about the possibility of creating a destination
- >in the xyplex, other than getting onto the ethernet. This destination
- >would have to reach a serial input on an old DG computer, running at
- >9600 bps, and would, it seems require reconfiguring a serial port on
- >the xyplex as a destination and then hardwiring it to the DG serial
- >input. I don't know of any way to (1) specify a destination inside
- >the xyplex, other than the network, or (2) reconfigure a serial port
- >on a individual basis. Doing this would allow someone calling the
- >xyplex from the PBX to then log onto the DG at 9600 bps, bypassing
- >the ethernet side of the interface entirely.
- >
- >The functionality the requester wants is to be logged onto a workstation
- >somewhere in the facility, telnet to the xyplex over the network and
- >then come out of it, onto a serial line and reach the DG input. This
- >would let someone work on the DG from locations with no PBX service.
- >
- >The PBX already reaches the DG serially, but that isn't helping me in my
- >debate with the person who wants the xyplex hookup, so I need to come
- >up with some real data on it's feasability. I have looked at the book
- >to some degree, but no luck there.
- >
- >As an aside, the xyplex supports standard rs-232 pins 2,3,7,8,20 and
- >22 and the DG interfaces are 2,3,4,5 and 7. So handshaking could become
- >really interesting. I believe it can't be done but would like to have
- >either confirmation or enlightenment. Please either post to the group
- >or email me any thoughts on the possibility of doing this, many thanks.
- >
- >Bob Foxworth
- >
-
- Hi Bob!
-
-
- We're using the Xyplex 1800 and we configured & connected a few ports
- into a 7171 (serial asynchronous controller) for remote connection.
-
- Concerning your question we configured the server as follows:
-
- 1. Define server internet rotary (assigns an internet address to
- port/s).
-
- 2. Define/set the telnet remote port as the telnet default port
- (i.e 23).
-
- 3. Define port access as remote.
-
- 4. Define port signal check as enabled (Enables you to restrict
- connections offered at this port, if the DSR is diasserted)
-
-
- Concerning wiring configuration we made the following:
-
-
-
- XYPLEX (RJ45) 7171 (DB25)
- ------------- -----------
-
- RING 1 --------------------------- 22
-
- DTR 2 ------------------------|-- 6
- |-- 20
-
- XMT 3 --------------------------- 3
-
- GND 4 |-------------------------- 7
- 5 |
-
- RCV 6 --------------------------- 2
-
- CD(DSR) 7 -------------------------|-- 4
- |-- 5
- |-- 8
-
-
-
-
- Hope this will be of any help
-
-
- Naftali Keren
-
-
-