7. Operation and Maintenance7-2 September 2002 9128-A2-GB20-80Trap Event Log on page 7-69Modem Operation on page 7-70—Activating the Modem PassThru Feature—Canceling Modem PassThru Operation—Manually Disconnecting the Modem—Verifying Modem OperationISDN DBM Operation on page 7-72—Forcing Backup (Disruptive)—Placing a Test Call (Nondisruptive)—Verifying ISDN Lines—Verifying That Backup Can Take PlaceFTP File Transfers on page 7-75—Upgrading System Software—Upgrading ISDN BRI DBM Software—Determining Whether a Download Is Completed—Changing Software—Changing SoftwareTurning Off the System Alarm Relay on page 7-81
