greg@gagme.chi.il.us (Gregory Gulik) (12/13/90)
Ok, I know what an ACU Modem adapter is, and what a
Terminal/Printer adapter is, but what are:
Remote/Console (Part No. 232 21 25 008)
-and-
355 AF
What are these? They both have RJ-45 on one end, and DB-25 on
the other.
-greg
--
Gregory A. Gulik Call Gagme, a public
greg@gagme.chi.il.us || ...uunet!motcid!gulik access UNIX system at
|| gulik@depaul.edu (312) 714-8568cmilono@netcom.UUCP (Carlo Milono) (12/15/90)
In article <957@gagme.chi.il.us> greg@gagme.chi.il.us (Gregory Gulik) writes: > >Ok, I know what an ACU Modem adapter is, and what a >Terminal/Printer adapter is, but what are: > >Remote/Console (Part No. 232 21 25 008) ----Remote/Console allows for faking out the CPU. For example, on some systems the lack of a *real* System Console will cause the system to power-down or panic...this can happen if the terminal is turned off, e.g. ----In addition, you might want to have a modem as the console and to appear to have DTR ready, but a modem is not a DTE, but a DCE...this adapter is constructed to allow remote access to the console with the above mentioned gotchas taken care of. > -and- >355 AF -----Another protection device...the 355 A has both resistors and diodes to protect *precious* equipment. I have seen it on ISN's especially, since the range of the net can be so large that the exposure to harmful electric stuff is greater...this RS232 adapter supposedly protects the equipment; I believe that it comes in both ACU/Modem Male/Female and Terminal/Printer Male/Female. I don't think that there are Remote/Console 355's. > >What are these? They both have RJ-45 on one end, and DB-25 on >the other. -- +--------------------------------------------------------------------------+ | Carlo Milono: netcom!cmilono@apple.com or apple!netcom!cmilono | |"When a true genius appears in the world, you may know him by this sign, | |that the dunces are all in confederacy against him." - Jonathan Swift | +--------------------------------------------------------------------------+
prg@mgweed.UUCP (Gunsul) (12/16/90)
In article <957@gagme.chi.il.us>, greg@gagme.chi.il.us (Gregory Gulik) writes: > > Ok, I know what an ACU Modem adapter is, and what a > Terminal/Printer adapter is, but what are: > > Remote/Console (Part No. 232 21 25 008) > -and- > 355 AF Hi Greg! Looking at the back of the Remote/Console connector (modular jack side that is), with the locking pin slot down toward the floor, the number 1 pin is to the left... Modular RS-232-C 1 ------yellow-------------------------- 1 2 ------red----------------------------- 5 3 ------blue---------------------------- 2 4 --| |-- 8 6 --|--------------------------------|-- 20 5 ------black--------------------------- 3 7 ------red/white----------------------- 7 8 ------white--------------------------- 4 This is just like the ACU modem connector except for the short between 4&6 and 8&20. As for the 355AF, this is a connector we use for our ISN to terminal connections... I'll try to draw it here in a simplified form, leaving of the 'protection diodes' attached to pins 22, 7, 6 & 8 and 20. Modular RS-232-C 6 ------orange-------------------------- 2 5 ------white/blue---------------------- 3 1 ------white/green------------/\/\/\--- 22 4 ------blue---------------------------- 7 2 ------green------------------/\/\/\-|- 6 |- 8 3 ------white/orange-----------/\/\/\--- 20 ( The /\/\/\'s are 715 ohm resistors ) > -greg > > -- > Gregory A. Gulik Call Gagme, a public > greg@gagme.chi.il.us || ...uunet!motcid!gulik access UNIX system at > || gulik@depaul.edu (312) 714-8568 > Xref: cbnewse unix-pc.general:5745 unix-pc.uucp:327 comp.sys.att:6619 -- AT&T | This space | (708)-859-4485 Phil Gunsul | intentionally | att!mgweed!prg Montgomery, IL | left blank.. | AT&T Information Systems
dsc3rjs@nmrdc1.nmrdc.nnmc.navy.mil (Bob Stratton) (12/20/90)
In article <957@gagme.chi.il.us> greg@gagme.chi.il.us (Gregory Gulik) writes: > >Ok, I know what an ACU Modem adapter is, and what a >Terminal/Printer adapter is, but what are: > >Remote/Console (Part No. 232 21 25 008) > -and- >355 AF > >What are these? They both have RJ-45 on one end, and DB-25 on >the other. > Another good question I haven't found the time to answer is: What is the "DTR" connector? It looks like those mentioned above, and says "B46337541 DTR" with a lot # on the case. -- Bob Stratton | dsc3rjs@nmdsc{20 | 10}.nmdsc.nnmc.navy.mil [Internet] Stratton Systems Design | dsc3rjs@vmnmdsc.BITNET [BITNET only, please!] | +1 703 823 MIND [PSTNet]
friedl@mtndew.Tustin.CA.US (Stephen J. Friedl) (12/20/90)
[ in a real netnews mood this evening! ] Bob Stratton writes: > > What is the "DTR" connector? It looks like those mentioned above, > and says "B46337541 DTR" with a lot # on the case. EPORTS supports hardware flow control on its CTS and RTS lines, but many devices (printers, usually) use DTR for their busy line. The DTR connector is like a terminal printer adaptor except DTR is routed where RTS usually is and CD and DTR on the 3B2 side are jumpered. This means that you no longer get hangup-on-power-off but you do get hardware flow control. Better is to build a connector that routes some always-high signal on the termianl into the CD input on the 3B2 -- I often find (oddly enough) that RTS is available for this.o Steve -- Stephen J. Friedl, KA8CMY / 3B2-kind-of-guy / Tustin, CA / 3B2-kind-of-guy +1 714 544 6561 / friedl@mtndew.Tustin.CA.US / {uunet,attmail}!mtndew!friedl Why not add Hollerith fields to printf()?