| 摘要 |
<p>Automatic dialing apparatus for one or more telephone lines within a subscriber"s system. Any telephone handset (1A-1N) connectable to a serviced telephone line (2) may enter a code at the handset to cause the automatic dialing apparatus to initiate dialing of a predetermined telephone number or a remaining portion thereof. When the dialed telephone number is an access code for a private leased line system, the automatic dialer may also generate the subscriber"s billing code. The automatic dialer preferably sends multi-frequency dialing signals regardless of the type of dial associated with the subscriber"s sets. A plurality of telephone lines can be serviced with a single dialer. User access codes may take the form of a portion of the predetermined telephone number or may comprise signals other than normal dialing signals which are transparent to the telephone line (2) in that no loss of dial tone occurs. </p> |
