Cordless telephone with circuit signalling battery replacement - has base station prevents transmission of noise to subscriber loop until mobile appts. is reactivated

摘要

Three resilient contact hooks (12-14) on a circuit board engage the conductive strips (18,19) on the underside of the battery of the mobile telephone set. When the battery is slid out for replacement, the first contact (13) broken causes a microprocessor (30) to send a signal (31) to the transmitter (S). On receipt of this signal, the base station mutes the LF path to the connected subscriber for an interval, long enough to enable the fully charged battery to be substituted. ADVANTAGE - Mobile station operator can resume interrupted conversation without having to operate another key.