error 734 ppp link control protocol was terminated all mobile modem setting

Goto Control Panel
Open Phone and Modem Options
Select Your Phone Modem and select Properties
Goto Advanced Tab
Enter     

Reliance

AT+CGDCONT=1,"IP","rcomnet"

AIRTEL

             AT+CGDCONT=1,"IP","airtelgprs.com"

AIRCEL

            AT+CGDCONT=1,"IP","aircelgprs.com"

  IDEA

            AT+CGDCONT=1,"IP","Internet"

DOCOMO

AT+CGDCONT=1,”IP”,”TATA.DOCOMO.INTERNET”

MTS

AT+CGDCONT=1,"IP","www.mts.com.ua" (for Windows 9х-XP), +CGDCONT=1,"IP","www.mts.com.ua" (for Windows CE) or AT+CGDCONT=1,"IP","www.mts.com.ua" (for Linux).