| http://www.w3.org/ns/prov#value | - In case of using SIP, the gateway node 23 may behave as a SIP proxy towards both the group communication service 21 and the direct-mode packet network. [0042] As noted above, the packet-mode group communication service according to the preferred embodiments of the invention is a user or application level service that overlays the communication network level, i.e. the access network, the direct-mod
|
