gnn@heisenberg.Berkeley.EDU (George Neville-Neil) (06/12/91)
Hi All, I have owned a T1600 from telebit for a couple of months now and every once in a while I have a rather perplexing problem. While logged in to work (which is either a T1600 or T2500) the modem will unexpectedly drop carrier. There are no noise characters or the like. I just get the message NO CARRIER. This is 9600 baud mode. Does anyone have any experience with this ?? Any help would be appreciated. Thanks, George -- George Neville-Neil Kinky is as kinky does. gnn@mammoth.berkeley.edu So many books, so little time.
edhall@rand.org (Ed Hall) (06/12/91)
In article <1991Jun11.182111.7088@agate.berkeley.edu> gnn@heisenberg.Berkeley.EDU (George Neville-Neil) writes: > While logged in to work (which is either a T1600 or T2500) the >modem will unexpectedly drop carrier. There are no noise characters >or the like. I just get the message NO CARRIER. This is 9600 baud >mode. I occasionally have the same problem (the other end in my case is a USR Dual Standard). Line quality was generally good (it's a V.32/V.42 connection and I've checked the appropriate S register for a count of retransmissions--and there were few, if any). The connection just up and dies without warning. This happens about every four hours or so of connect time. The last time it happened, I had just transfered a couple megabytes of data (which proceded at full speed) and was idling for a moment. This is with 1.00 ROMS. -Ed Hall edhall@rand.org P.S. No, I don't have call-waiting, and it has nothing to do with TELCO automatic line testing. I'm mystified.
davidg%aegis.or.jp@kyoto-u.ac.jp (Dave McLane) (06/13/91)
gnn@heisenberg.Berkeley.EDU (George Neville-Neil) writes: > While logged in to work (which is either a T1600 or T2500) the > modem will unexpectedly drop carrier. There are no noise characters > or the like. I just get the message NO CARRIER. This is 9600 baud > mode. The first question I would ask is whether you are running in error-correction mode. If so, then you won't see any noise characters (as they are being filtered by the error-correction); thus you might want to think about running without error-correction where you can see if there is any noise. If you're not running in error-correction mode, I haven't a clue. Dave -- Dave McLane <davidg%aegis.or.jp@kyoto-u.ac.jp>