Appendix C: Meridian Modular Telephones add-on modules installation Page 381 of 504Telephones and Consoles Description, Installation, and Operation13 Remove the knockout located on the back panel of the footstand in orderto install the ATA. It is the smaller knockout, located inside the largeknockout. The small ATA knockout can be remove by pressing it in withthumb presser.14 Install the ATA Printed Circuit board into the footstand.15 Plug the ATA 8-conductor line cord, included in the package, into the datajack in the base of the telephone. Plug the other end of this cord into thedata jack of the ATA located in the footstand.16 Reassemble the footstand on the base and screw it into position using a#1 Phillips screwdriver.17 Plug the 24v AC Power Transformer into the circular mini DIN connectoron the backpanel of the footstand.18 Plug the transformer end of the AC Power Transformer into the ACcommercial electrical outlet.19 The analog device can now be connected to the RJ11 connector on theback of the footstand. Refer to the manufacturer’s documentation forinstallation instructions for the FAX, modem, or telephone to be used.End of ProcedureMeridian Communications Adapter and MeridianProgrammable Data AdapterThe Meridian Communications Adapter (MCA) replaces the MeridianProgrammable Data Adapter (MPDA), and offers enhanced capability overthe MPDA.Functional descriptionThe MCA mounts within the telephone. It enables synchronous andasynchronous ASCII terminals and personal computers to be connected to thetelephone using an RS-232-C or V.35 interface on a DB-25 connector. SeeFigure 68 on page 385.The MCA enables synchronous applications (DTEs such as videoconferencing equipment and Group IV fax units) to be connected to the
