[comp.dcom.modems] DMC/DMR11 synch. controller on VAX 11/780-5

ppk@ihlpa.UUCP (01/24/87)

	I am looking for a good method to test DMC/DMR11
synchronous controllers on a DEC VAX 11/780-5. The diagnostics
supplied by DEC seldom indicate impaired performance unless
a board is in major trouble. This can be very frustrating!!
The VAX is running UNIX system V.2. ANY information --
pointers to existing programs, ideas, comments, etc. are
sincerely appreciated.

		Phil Kells
		AT&T Bell Laboratories
		Naperville IL
	

kridle@mtxinu.UUCP (01/27/87)

In article <2771@ihlpa.UUCP> ppk@ihlpa.UUCP (Kells) writes:
>
>	I am looking for a good method to test DMC/DMR11
>synchronous controllers on a DEC VAX 11/780-5. The diagnostics
>supplied by DEC seldom indicate impaired performance unless
>a board is in major trouble. This can be very frustrating!!
>The VAX is running UNIX system V.2. ANY information --
>pointers to existing programs, ideas, comments, etc. are
>sincerely appreciated.
>
>		Phil Kells
>		AT&T Bell Laboratories
>		Naperville IL
>	
I don't have an answer to you question, but would like to reinforce your
statement about the DEC diags. above. Several years ago, I installed
a DEC DMC11 and discovered it would pass the external loopback test
without having the loopback installed!





-- 

Bob Kridle                 mt Xinu, 2560 Ninth St., Berkeley, CA  94710  USA
ucbvax!mtxinu!kridle       +1 415 644 0146

shan@mcf.UUCP (01/28/87)

In article <288@mtxinu.UUCP> kridle@mtxinu.UUCP (Bob kridle) writes:
>In article <2771@ihlpa.UUCP> ppk@ihlpa.UUCP (Kells) writes:
>>
>>	I am looking for a good method to test DMC/DMR11
>>synchronous controllers on a DEC VAX 11/780-5. The diagnostics
>>supplied by DEC seldom indicate impaired performance unless
>>a board is in major trouble. This can be very frustrating!!
>>The VAX is running UNIX system V.2. ANY information --
>>sincerely appreciated.
>>	
> Several years ago, I installed
>a DEC DMC11 and discovered it would pass the external loopback test
>without having the loopback installed!
>

We have a VAX-11/750 and suffer from the same
problems! The DEC diagnostics for DEUNA showed it had passed
all it tests even though we did NOT have the loopback installed!
			sharan kalwani
			...!ihnp4!mb2c!mcf!shan
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