This is how I connect to the internet on PCQLinux 2005.
I got this procedure from internet
Procedure:-

———————————
[Modem0]
Modem=/dev/ttyS0
Baud=115200
SetVolume=0
Dial Command = ATDT
init1=ATZ
init2=AT+CRM=1
FlowControl= Hardware (CRTSCTS)
[Dialer tata]
Username= internet
Password= internet
Phone=#777
Stupid Mode= 1
Inherits = Modem0
———————————–

Copy the above fragment in /etc/wvdial.conf
Reliance users should use username and password as their
phone number. also Change ‘Dialer’ field from tata to reliance

Note:For FC3 (PCQL2005), you have to have the respective name
server entries in file /etc/resolv.conf in the format:

nameserver [Primary DNS address]
nameserver [Secondary DNS address]

For Reliance, use:
Code:
nameserver 202.138.103.100
nameserver 202.138.97.193

For TATA use:
Code:
nameserver 203.197.12.30
nameserver 202.54.6.50

for TATA
execute-#wvdial tata
for Reliance
execute-#wvdial reliance
you may have to try this command a number of times
you will get quiet a number of messages
here. I am assuming that your modem is at COM1
if it is at COM2 change /dev/ttyS0 to
/dev/ttyS1 …
if all goes well your interface
is up now.