[solved] modem hung up on etch
the problem was the isdn network, installing only the package ppp or
pppoe contained in the first cd-rom of etch is not configurating
correctly the modem that run for a line not isdn.
To resolve installing the package pppconfig and setting the option in the file:
to comment this lines:
# If this option is given, pppd will presume the peer to be dead if n
# LCP echo-requests are sent without receiving a valid LCP echo-reply.
# If this happens, pppd will terminate the connection. Use of this
# option requires a non-zero value for the lcp-echo-interval parameter.
# This option can be used to enable pppd to terminate after the physical
# connection has been broken (e.g., the modem has hung up) in
# situations where no hardware modem control lines are available.