23. A video conversational communication network in accordance with claim 1 wherein said one message switching interface storage means further comprises means capable for retrievably storing at least one subscriber created inhibit list for each of said keystations connected to said one message switching interface means, each of a plurality of said keyboard means further being capable of providing at least a different one of said subscriber created retrievably stored inhibit lists to said one message switching interface storage means for each of a corresponding plurality of associated ones of said subscriber keystations whereby a plurality of different unique inhibit lists may be retrievably stored in said one message switching interface storage means, said inhibit lists each being capable of comprising a plurality of different unique designated keystation identification codes each of which corresponds to a different keystation in said network, said message routing logic means comprising means responsive to a calling keystation keyboard means provided unique calling signal for said designated keystation portion for retrieving said inhibit list created by said designated keystation and selectively inhibiting the completion of said call to said designated keystation when it is free only in response to detection of a keystation identification code corresponding to said calling keystation in said retrieved inhibit list, whereby a subscriber keystation may selectively prevent the establishment of a video textual data conversation with predefined subscribers in the network.
36. A video conversational communication network in accordance with claim 23 wherein said contact list may be created by said keyboard means at any time prior to initiating said call, whereby said contact list may be prestored or may be created as part of the set-up of a call.