| 摘要 |
A telecommunications system (S) that includes;
a. telephone exchange unit, in the form of a telephone station (1), provided with selector devices (1a, 1b),
b. a number of subscriber apparatus (5)
c. a number of mobile subscriber apparatus (8) and
d. a private branch exchange or a switchboard,
e. means adapted to establish or evaluate the geographical area and/or the location of a calling subscriber apparatus (5),
f. memory means for storing at least the geographical areas and/or the locations that apply for each of a number of available mobile subscriber apparatus (8).
said mobile subscriber apparatus (8, 9) is provided with a navigation system (20). A mobile subscriber apparatus related memory (21) is adapted to hold information regarding geographical positions that are given to one and the same delimited geographical area (1a). Mobile subscriber apparatus related first means (41) are adapted to compare a received position of the mobile subscriber apparatus (8, 9) with the geographical positions stored in said memory (21) and that, at a comparison that gives a position relevant for a different geographical area (21b) than a previous made comparison, mobile subscriber apparatus related second means (42) are adapted to activate third means (43) in order to initiate and perform a call, via an area related telephone number, for registering and storing a performed area transition. |
