A conferencing system comprising a multipoint communication server for establishing multipoint communication between a plurality of endpoints (10-17; A-F), the multipoint communication server comprising: - a session control interface configured to receive a set of participating endpoint identifiers, for endpoints participating in a multipoint communication session; - a data repository containing the set of participating endpoints identifiers; - a media processing unit configured to receive an upstream media stream (18; 29) from an emitting endpoint (10; C) among the participating endpoints of the multipoint communication session, the media processing unit being further configured to generate a plurality of downstream media streams (118; 127, 128, 129, 130, 131, 132) for the participating endpoints of the multipoint communication session, wherein the data repository further contains a replication inhibition set associated to the emitting endpoint (10; C), wherein the replication inhibition set consists of a subset (10, 11, 12, 13, 14, 15; C, D) of the participating endpoint identifiers, wherein the media processing unit is configured to generate the downstream media stream (118; 129, 130) for each participating endpoint (10, 11, 12, 13, 14, 15; C, D) whose endpoint identifier belongs to the replication inhibition set so that the downstream media stream (118; 129, 130) does not replicate the upstream media stream (18; 29), and wherein the media processing unit is configured to generate the downstream media stream (118; 127, 128, 131, 132) for each participating endpoint whose endpoint identifier does not belong to the replication inhibition set, so that the downstream media stream does replicate the upstream media stream (18; 29); the conferencing system further comprising a localization system, the localization system comprising: - a low power beacon being configured to broadcast a request for presence report; - a receiver being configured to receive presence messages (34, 35) from the emitting endpoint and endpoints located within reach of the request, wherein the presence messages comprise presence endpoint identifiers (UID10, UID 11); and - a processing unit being configured to: - make a list of presence endpoint identifiers, including for endpoints not participating in the multipoint communication session; - generate the replication inhibition set associated to the emitting endpoint, said replication inhibition set comprising the endpoint identifier of the emitting endpoint (10; C), and the presence endpoint identifiers of endpoints located within reach of the request; and - send a message to the data repository comprising the list of presence endpoint identifiers, and the replication inhibition set associated to the emitting endpoint. - a session control interface configured to receive a set of participating endpoint identifiers, for endpoints participating in a multipoint communication session; - a data repository containing the set of participating endpoints identifiers; - a media processing unit configured to receive an upstream media stream (18; 29) from an emitting endpoint (10; C) among the participating endpoints of the multipoint communication session, the media processing unit being further configured to generate a plurality of downstream media streams (118; 127, 128, 129, 130, 131, 132) for the participating endpoints of the multipoint communication session, - a low power beacon being configured to broadcast a request for presence report; - a receiver being configured to receive presence messages (34, 35) from the emitting endpoint and endpoints located within reach of the request, wherein the presence messages comprise presence endpoint identifiers (UID10, UID 11); and - a processing unit being configured to: - make a list of presence endpoint identifiers, including for endpoints not participating in the multipoint communication session; - generate the replication inhibition set associated to the emitting endpoint, said replication inhibition set comprising the endpoint identifier of the emitting endpoint (10; C), and the presence endpoint identifiers of endpoints located within reach of the request; and - send a message to the data repository comprising the list of presence endpoint identifiers, and the replication inhibition set associated to the emitting endpoint.