Many thanks for the continuing advice. I have worked through the linux-usb.org documentation again using details for pppoa. I am reasonably confident that the files chap-secrets, speedtch and bootscript are correct.
The output from the command 'pppd call speedtch debug' follows: Plugin pppoatm.so loaded. PPPoATM plugin_init PPPoATM setdevname_pppoatm - SUCCESS:0.38 using channel 1 Using interface ppp0 Connect: ppp0 <--> 0.38 sent [LCP ConfReq id=0x1 <magic 0x53230974>] rcvd [LCP ConfReq id=0x1 <auth chap MD5> <magic 0x3c68fd16>] sent [LCP ConfAck id=0x1 <auth chap MD5> <magic 0x3c68fd16>] sent [LCP ConfReq id=0x1 <magic 0x53230974>] rcvd [LCP ConfAck id=0x1 <magic 0x53230974>] sent [LCP EchoReq id=0x0 magic=0x53230974] rcvd [CHAP Challenge id=0x1 <b9440424b707eefd7967eaec384b7046>, name = "ESR7.Ilford5"] sent [CHAP Response id=0x1 <cdd0b8ca4e0f71a85e7c003fa5246fdb>, name = "[EMAIL PROTECTED]"] rcvd [LCP EchoRep id=0x0 magic=0x3c68fd16] rcvd [CHAP Success id=0x1 ""] 00 00 00 00 CHAP authentication succeeded sent [CCP ConfReq id=0x1 <deflate 15> <deflate(old#) 15> <bsd v1 15>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> < ms-dns3 0.0.0.0>] rcvd [IPCP ConfReq id=0x1 <addr 62.25.198.171>] sent [IPCP ConfAck id=0x1 <addr 62.25.198.171>] rcvd [LCP ProtRej id=0x1 80 fd 01 01 00 0f 1a 04 78 00 18 04 78 00 15 03 2f] rcvd [IPCP ConfRej id=0x1 <compress VJ 0f 01>] sent [IPCP ConfReq id=0x2 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>] rcvd [IPCP ConfNak id=0x2 <addr 84.69.1.48> <ms-dns1 195.92.195.95> <ms-dns3 195 .92.195.94>] sent [IPCP ConfReq id=0x3 <addr 84.69.1.48> <ms-dns1 195.92.195.95> <ms-dns3 195 .92.195.94>] rcvd [IPCP ConfAck id=0x3 <addr 84.69.1.48> <ms-dns1 195.92.195.95> <ms-dns3 195 .92.195.94>] local IP address 84.69.1.48 remote IP address 62.25.198.171 primary DNS address 195.92.195.95 secondary DNS address 195.92.195.94 Modem lights still blinking continuously red on boot. Liste de diffusion modem ALCATEL SpeedTouch USB Pour se désinscrire : mailto:[EMAIL PROTECTED]
