Communication Services There are three basic types of connection of data communication equipment: simplex, half duplex, and full duplex. A simplex ... You can still purchase some forms of the TELPAK services with 60-240 voice-grade circuits. ... Incorporated into the system will be a digital terminal system (DTS), a wideband, two-way microwave facility. ... In its early steps, there will be a limited number of digital intercity trunk circuits accessible to geographically dispersed users.
|Title||:||CDP review manual|
|Author||:||Kenniston W. Lord|
|Publisher||:||Van Nostrand Reinhold Company - 1986|