. universalDataSystems :: UniversalDataSystems UDS801AC Direct Connect Installation And Operation Manual Jan1985 . MWPMlM. Figure 2UDS 801 A/C (Rear View) 1-0 Chapter 1Introduction Contents General Physical Description Specifications Physical Characteristics UDS Supplied Equipment GENERAL The UDS 801 A/C is a Direct Connect Automatic Calling Unit (ACU) that enables a data terminal to establish calls through the telephone network. The basic ACU contains all the options required to support parallel (RS-366-A) or serial (RS-232-C) data input from the terminal. Calls can be
. universalDataSystems :: UniversalDataSystems UDS801AC Direct Connect Installation And Operation Manual Jan1985 . MWPMlM. Figure 2UDS 801 A/C (Rear View) 1-0 Chapter 1Introduction Contents General Physical Description Specifications Physical Characteristics UDS Supplied Equipment GENERAL The UDS 801 A/C is a Direct Connect Automatic Calling Unit (ACU) that enables a data terminal to establish calls through the telephone network. The basic ACU contains all the options required to support parallel (RS-366-A) or serial (RS-232-C) data input from the terminal. Calls can be completed using eitherpulse or DTMF (tone) dialing methods as selected by the user or by the ACU in response to line conditions and the availability of tone dialing from the CentralOffice. The design of the 801 A/C utilizes microprocessor technology resulting in manyadvantages. The most obvious is a great reduction in the space required by thecircuitry. This allows mounting all the components required for parallel orserial interface, pulse or tone dialing on a single PC board with ample room foran internal power sup
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