to my surprise the (external) dynalink isdn ta is128ae+ which I've bought today doesn't work out of the box on my linux machine. I had no problems with the usr external i-modem or a generic 28.8k modem. I have set ppp 'debug on' and included the relevant message part in this mail. I did #seyon & and atdt"isp-number" to see which string I have to expect.. the string was 'CONNECT', the same string my chat script is expecting. to rule out the possibility of a defective modem I have tested it with winnt. it worked with winnt. I have copied the modem string in the nt's modem.inf file and applied it to my chat script.. still it will not work on linux. but, I may have located the problem. I have noticed that when I try to establish a ppp link (as root) the is128ae+ will not dial out, 'chat' will never receives the expected 'CONNECT' string and aborts with an error message. still I don't know how to solve this problem. your help will be appreciated !. Jun 13 19:57:48 silent ifup-ppp: pppd started for ppp0 on /dev/modem at 115200 Jun 13 19:57:48 silent modprobe: can't locate module ppp0 <it is compiled in> Jun 13 19:57:48 silent kernel: registered device ppp0 Jun 13 19:57:49 silent pppd[438]: pppd 2.3.3 started by root, uid 0 Jun 13 19:57:50 silent chat[441]: abort on (BUSY) Jun 13 19:57:50 silent chat[441]: abort on (ERROR) Jun 13 19:57:50 silent chat[441]: abort on (NO CARRIER) Jun 13 19:57:50 silent chat[441]: abort on (NO DIALTONE) Jun 13 19:57:50 silent chat[441]: abort on (Invalid Login) Jun 13 19:57:50 silent chat[441]: abort on (Login incorrect) Jun 13 19:57:50 silent chat[441]: send (ATZ^M) Jun 13 19:57:50 silent chat[441]: expect (OK) Jun 13 19:57:50 silent chat[441]: ATZ^M^M Jun 13 19:57:50 silent chat[441]: OK Jun 13 19:57:50 silent chat[441]: -- got it Jun 13 19:57:50 silent chat[441]: send (ATDT0793600800^M) Jun 13 19:57:50 silent chat[441]: expect (CONNECT) Jun 13 19:57:50 silent chat[441]: ^M Jun 13 19:58:35 silent chat[441]: alarm Jun 13 19:58:35 silent chat[441]: Failed Jun 13 19:58:35 silent pppd[438]: Connect script failed Jun 13 19:58:36 silent pppd[438]: Exit. -=Unix is Freedom=- -- PLEASE read the Red Hat FAQ, Tips, Errata and the MAILING LIST ARCHIVES! http://www.redhat.com/RedHat-FAQ /RedHat-Errata /RedHat-Tips /mailing-lists To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe" as the Subject.