In Edgy this is caused by incorrectly setting the dial-out command to "ATDTW" or "ATDPW" instead of "ATDT" or "ATDP" in /etc/chatscripts/ppp0.
-- [network-admin] Dial out does not work https://launchpad.net/bugs/22119 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs