The present disclosure relates to a method and a
system for optimising an IP short message gateway (IPSMGW) messaging service The present disclosure encompasses: receiving a
short message service (SMS) request comprising one or more SMS request parameters initiating, a
mobile number portability (MNP) request associated with the second user; initiating, a
diameter request, wherein the
diameter request is at least a charge request associated with the SMS request based on at least the MNP request; initiating, a Send Routing Information (SRI) request based on at least the
diameter request; receiving, a routing information based on the SRI response; initiating, a mobile terminated (MT) request associated with the SMS request based on at least the routing information; delivering, an SMS message associated with the SMS request based on initiating the mobile terminated (MT) request from the one or more first IPSMGW via the target protocol.