ludo@amdahl.UUCP (04/23/86)
Does anybody in net.dcom have a interface specification for a Bell 801
acu ? I am interested in characters other than digits given to the 801
to have it "wait for secondary dial tone" etc.
Ludo J. M. Vennekens
(408) 737-5074
...{hplabs,ihnp4,amd}!amdahl!ludo
[The opinions expressed are those of the author and not necessarily
those of Amdahl Corporation, its management, or employees.]jlw%ariel@ariel.UUCP (04/29/86)
> > Does anybody in net.dcom have a interface specification for a Bell 801 > acu ? I am interested in characters other than digits given to the 801 > to have it "wait for secondary dial tone" etc. > > Ludo J. M. Vennekens > (408) 737-5074 > ...{hplabs,ihnp4,amd}!amdahl!ludo The 801acu uses the RS366 interface which if memory serves me right was a four bit wide bcd+ i/f on a DB25 connector. It was separate from the RS-232C i/f for the modem and went on the line side of the modem. The DEC DN11 i/f was used for ACU duty. If you can find an old DEC communications handbook from the mid-70s or write to the EIA you should be able to get a copy. Joseph L. Wood, III AT&T Information Systems Laboratories, Middletown (201) 957-5475 <ariel!>titania!jlw