| 摘要 |
<p>A communications system comprising a first part and a second part, the first and second parts being connected so that a first user in one of the first and second parts can communicate with a second user in the other of the first and second parts, wherein at least said first user is able to move within the respective part of said system, said system further comprising a gateway for permitting communications between said first and second parts, said gateway comprising a register for storing information associating the said first and second users and for storing information relating to the current location of the first user so that information from the second user can be directed to first user.</p> |
