UNICOM. UNIVERSAL INTEGRATED COMMUNICATION SYSTEM.
Progress rept. no. 18, 1 Oct-31 Dec 63.
BELL TELEPHONE LABS INC WHIPPANY N J
Pagination or Media Count:
In System Engineering, system requirements for disposition of blocked store and forward messages were specified and teletypewriter input messages necessary for control of the store and forward units were reviewed. Use of the Test Model to demonstrate inter-switching-center call and message handling was investigated and a plan to simulate a three-switching-center configuration with the Test Model equipment was devised. Digital transmission tests over an HF radio link were continued and performance confirmed as being unsuitable for Test Model use. In the Test Model development program, all items not previously suspended are undergoing systems equipment tests. The central processor has exercised all units controlled by it with the use of special test programs. Central controls are operational in the simplex modes, and PCM and vocoded speech were switched through the time division switch. Author