FIELD: information technologies.
SUBSTANCE: invention refers to authority control modes for application of each transmission medium by each user. Transmission function limiting unit (2106) estimates whether each recipient from address book controlled with recipient control unit (2103) corresponds to transmission medium which current user is authorised to operate. If Transmission function limiting unit (2106) estimates that recipient corresponds to medium which user is not authorised to operate, it eliminates the recipient and then displays destination list. User can specify required recipient from destination list and indicate transmission.
EFFECT: data transmission medium authorities are distributed due to user control table control unit (2107) storing transmission medium authorities of each user.
15 cl, 26 dwg
