Configuring BSNL EVDO Modem in Debian GNU/Linux

EVDO DeviceI recently shifted to Debian GNU/Linux (Lenny), and the first task included configuring my Internet Connection, i use BSNL EVDO Modem to connect to the internet which is not recognized my default in Debian so following is the process by which i configured my BSNL EVDO in Debian

Step 1) Checked for Modem, Vendor and Product ID

$ cat /proc/bus/usb/devices

You will find many entires in this just check for your modem entry in my case i found

T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  4 Spd=12  MxCh= 0
D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=19d2 ProdID=fffe Rev= 0.00
S:  Manufacturer=ZTE, Incorporated
S:  Product=ZTE CDMA Tech

by this i know the following information