Etisalat 3G configuration on CISCO Router

chat-script gsm "" "ATDT*98*2#" TIMEOUT 60 "CONNECT"
chat-script ETISALAT "" "ATDT*99*1#" TIMEOUT 60 "CONNECT"
!
!
!
interface Cellular0/1/0
ip address negotiated
ip nat outside
ip virtual-reassembly
encapsulation ppp
dialer in-band
dialer idle-timeout 2147483
dialer string gsm
dialer-group 1
async mode interactive
ppp chap hostname etisalat
ppp chap password 0 etisalat
ppp ipcp dns request
!
!
ip route 0.0.0.0 0.0.0.0 Cellular0/1/0
!
!
line 0/1/0
exec-timeout 0 0
password 7 1234512345
script dialer ETISALAT
logging synchronous
login
modem InOut
no exec
rxspeed 3600000
txspeed 384000

Important Note : After configuring the router just ping any public IP to get dialer connected.