Gigabit QAM Modulator Model D9479 Hardware Installation and ...

Chapter 3 Provisioning the GQAMFunction KeysThe following additional function keys appear in the Advanced Parameters window.KeySelectSet upFunctionOpens the File Selection Dialog window so that you canspecify the configuration file for the selected modulator.Refer to Understanding the File Selection Dialog Screen(on page 44) for more details.Opens the Multiple Digital Session Definition forGQAM window or the Stat Mux Dejitter Groups ForGQAM window, respectively.Understanding the File Selection Dialog ScreenThe File Selection Dialog Screen allows you to specify the configuration file for themodulator. To view the File Selection Dialog screen, click the Select button on theAdvanced Parameters tab on the DNCS GUI.Understanding the Bootp/Tftp ProcessWhen a modulator boots, it sends a bootp request to get an IP address. Thebootp/tftp process allows the GQAM, after power on or reset, to request and receiveconfiguration parameters, application downloads, and provisioning from thenetwork bootp server. The DNCS, which is a bootp server, uses a bootp reply toassign an IP address to the GQAM, provided the device is provisioned in the DNCSdatabase. The configuration file selected in the File Selection Dialog window isincluded in the bootp reply.The GQAM uses the information in the configuration file to determine whether it isrunning the correct version of application code. If it is not running the correctversion of application code, it requests the correct image file(s) from the DNCS.44 78-745431-01 Rev E