| 摘要 |
<p>PURPOSE:To efficiently set a speech path even when a portable telephone to be called goes anywhere by applying broad band call when said telephone set is moved to other area and setting the speech path by its reply path. CONSTITUTION:When the telephone set A to be called is moved to other area and does not reply a call from an originating telephone set B when the originat ing B belonging to exchange systems 1-4 calls the telephone set A to be called belonging to exchange systems 5-8, broad band call is applied from a broad band radio base station KRC-III-1. When the telephone set A receiving the call replies the call, a reply signal is sent to said call base station KRC-III-1 via a nearby portable master telephone system T and exchanges 9, 10. The exchange 7 receiving the reply signal confirms it to be a reply to the broad band call station belonging to itself to set the speech path of exchanges 1 3 7 10 9 to connect the originating telephone set B and the portable telephone set A to be called.</p> |
