SIM900 GPRS HTTP AT Commands

http://www.raviyp.com/embedded/194-sim900-gprs-http-at-commands?showall=&limitstart=

I am trying http at commands for sim7600i. What’s the alternative for AT+SAPBR command in sim7500/7600 series. Could you please let me know the at commands which needs to be executed before at+httpinit command.