Yes, we have.

MOBITEK SMS360: refer to http://sms360.com.my/main/index.php/2016/02/17/do-you-have-a-sms-gateway-that-does-not-require-internet-to-send-out-sms/

MOBITEK MobiGATE: refer to http://www.mobitek.my/main/product/mobigate/