Switching system auxiliary line transfer circuit
Patent 4451704 Issued on May 29, 1984. Estimated Expiration Date: 
April 2, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 2, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2922847 3111561 3482057 3557318 3643034 3721770 InventorAssigneeApplicationNo. 06/364787 filed on 04/02/1982US Classes:379/67.1, AUDIO MESSAGE STORAGE, RETRIEVAL, OR SYNTHESIS379/212.01, Call transfer379/309Call distribution or queuingExaminersPrimary: Brown, Thomas W.Attorney, Agent or FirmInternational ClassesH04M 3/50 (20060101)H04M 3/51 (20060101) H04M 3/523 (20060101) AbstractA line circuit for use in coupling lines with an automatic call distributing switching system. The line circuit (1, 2) responds to a calling customer seizure of a line by connecting the seized line through the switching system (3) to attendant positions 34(P). Apparatus (100, 101, 102, 103) operable by an attendant position connected with the seized line releases the switching system connection and couples the seized line to an announcement circuit (49) to transmit attendant identified information over the seized line to the calling customer. If the calling customer does not disconnect from the announcement circuit after a predetermined time apparatus (104, 105) of the line circuit is enabled to initiate a call connection through the switching system and reconnect the seized line to the attendant positions. | |
