Operation3-213150-A2-GB21-80 February 1998Using the Integral Modem inStandalone CSUsThe standalone CSU’s integral modem enables yourCSU to communicate with remote devices to displayalarm messages or to function as the user interface. Thecarrier-mounted CSU does not have an integralmodem.The Call command, available from the Control branchof the menu tree, provides the following functions toinitiate and terminate modem connections:• Pass – Initiates a call through the integral modemto access a far-end CSU’s front panel from yourCSU’s front panel (or PC attached to the COMport).• Dial – Initiates a call through the integral modem toa printer, ASCII terminal, or PC. Sets up asemipermanent connection to route alarm messagesto the specified destination.• Disconnect – Disconnects an active modemconnection.• Change Directory – Allows entry of phonenumbers into the internal phone directories.For additional information, refer to the User InterfaceConfiguration Options section in Appendix C.Entering Numbers in the Phone DirectoriesThe CSU has five general directories (1 through 5) andone alarm directory (A). Use the general directories tostore phone numbers for remote devices such asstandalone CSUs and ASCII printers. Use the alarmdirectory to store the phone number of the primary ASCIIterminal or printer you use to display or print alarms. Thisfunction is not available for carrier-mounted CSUsbecause the integral modem is not available forcarrier-mounted CSUs.To enter or change numbers in the phone directories,1. From the top-level menu screen, press the keyuntil the Ctrl selection appears on the screen.2. Select Ctrl.3. From the Control screen, select Call.F1Control:Call ACO RelF2 F34. From the Call Setup screen, select ChDir.F1Call Setup:Dial Disc ChDirF2 F3The Directory 1 displays first, along with itsphone number if one has been entered.5. Press F1 (Next) to display the next directory (2, inthis case). Press F2 (Previous) to display theprevious directory (A, in this case). Directoriesappear in order, 1 through 5 and then A.F11: xxxxxxxxxxxxxxxxxNext Prev EditF2 F3