Telecommunications DataBook / 

 -  National Semiconductor Corporation 
<br/><br/>Digital Switching Components (Page-1), Telephone Set Components (Page-2), Modems (Page-3), Linear Building Blocks (Page-4), Fiber Optic Devices (Page-5), Microcontrollers and Peripherals (Page-6), Microprocessors and Peripherals (Page-7), Interface (Page,8), Physical Dimensions (Page-9). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication engineering
<br/><br/><label>Dewey Class. No.: </label>621.3822,TEL