An improved telecommunications network that can reduce the network load on a rich communication services (RCS) server and/or local routers that implement 1-to-N and/or M-to-N services is described herein. In particular, the improved telecommunications network may include an improved RCS server that can route multicast messages instead of and/or in addition to unicast messages. For example, the improved RCS server can create a multicast group for a group of UEs in response to a request from a UE to create a group of UEs. Creation of the multicast group may include assigning a group Internet protocol (IP) address to the multicast group. The improved RCS server can then determine which UEs in the multicast group are capable of sending and/or receiving multicast messages, and send multicast messages instead of unicast messages to these UEs.