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- From: dwight@hyphen.com (Dwight Ernest)
- Subject: Re: Telebit WB Problem
- Message-ID: <1992Dec12.133425.23486@hyphen.com>
- Organization: Hyphen, Inc., Wilmington, MA 01887 USA / +1 508 988-0880
- References: <1992Dec7.024626.22666@tous.oau.org> <Bz08Fs.IKE@hico2.westmark.com> <1992Dec10.174615.15323@q7.tessi.com> <Bz2D2B.HGA@ernest.itg.ti.com>
- Date: Sat, 12 Dec 1992 13:34:25 GMT
- Lines: 20
-
- alan@ernest.itg.ti.com (Alan Edmonds) writes:
- >In article <1992Dec10.174615.15323@q7.tessi.com> joey@q7.tessi.com (Joe Pruett) writes:
- >>there is/used to be a problem with sun systems and telebit modems.
- >>basically, you need to increase the time the sun holds dtr low
- >>during a line reset. you do this by changing the kernel variable
- >>zsadtrlow from 3 to 5. it may just be superstition, but my worldblazer
- >>had the no-answer problem, until i remembered this bit of kernel
- >>hackery, and now it behaves fine.
-
- >This is interesting because the WB has an S register to specify the minimum
- >amount of time for DTR to be low to cuase a modem reset. The minimum value
- >you can stick in that register is 50 milliseconds.
-
- I believe there's no relationship between that S-register on the modem
- and the way the operating system behaves when it re-raises DTR after
- a connection drops.
- --
- --Dwight A. Ernest R&D Manager (USA) I speak only for myself.
- Hyphen, Inc./181 Ballardvale St./Wilmington, MA 01887/+1 508 988 0880 x125
- dwight@hyphen.com
-