1. United States Patent [191 Pitroda et al. [11] 4,289,934 [45] Sep. 15, 1981 [54] INTEGRATED AUTOMATIC CALL DISTRIBUTION FACILITY AND PBX SYSTEM [75] Inventors: Satyan G.…
United States Patent [191 Fechalos et al. 4,154,988 May 15, 1979 I11] [45] [54] METHOD AND MEANS FOR ACCESSING PROGRAM MEMORY OF A COMMON FOREIGN PATENT DOCUMENTS CONTROL…
1. CCNA COLLABORATION (CICD) 2. Connection of Ground and Batteries 3. Loop Start Signaling • On Hook: Phone separates two wire, preventing electric signal from flowing.…