7.4.7 Utility—Monitor/Trace—E1 Signalling Bit MonitorDisplays reference signalling bit information for all channels of a E1 card that is installed in an Expansion Unitby monitoring sent and received A, B, C and D bits. This utility is intended for use by dealers.For information about Expansion Units see 9.33 PBX Configuration—[1-1]Configuration—Slot—Expansion Unit1/Expansion Unit2/Expansion Unit3.This option is only available at the Installer level, and requires that the target card be set to INS status.While monitoring is being performed, any displayed bits whose value changes from 0 to 1 or vice versa will behighlighted in red until the next screen refresh is performed.To view signalling bit information1. From the Shelf-Slot No. drop-down list, select the target slot. Each card will be preceded by the pattern"X-Y" as follows:• X: Shelf number (1-4)– 1: Main Unit– 2: Expansion Unit1– 3: Expansion Unit2– 4: Expansion Unit3• Y: Slot number (1-7)2. From the Interval Timer drop-down list, select the number of seconds between each automatic screenrefresh.3. Click Start.Monitoring will be performed and the screen will refresh according to the interval specified.4. Click Stop to end monitoring.To refresh the screen at any time while monitoring is stopped, click Refresh.126 PC Programming Manual7.4.7 Utility—Monitor/Trace—E1 Signalling Bit Monitor
