Wung I had this problem all of a sudden, the isdn device replys on the D channel it was connected, then- no data on the main channel,, so ISP dropped channel, It was a LUCENT DEFINITY switch, local telephone exchange in the Office Bld with ISDN simulator cards. we tried everything,, Virus checks, different PC's etc etc, the service agent did a days worth of tests.ISDN Phone handset worked ok.still the same. swopped over to a BrTelecom fixed ISDN line all ok now. i suspected a software "upgrade" which downgraded the operation
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.