Configuring the Unit5-153550-A2-GB20-40 July 1999Table 5-6(4 of 4)DBM Configuration OptionsV.13 Signl: Enab for MPTC and MPTT; Disab for other configurationsNext Enab Disab PrevV.13 Signaling (only displayed when Full Mode is enabled). V.13 signaling applies to the DBM when the DBM is in DialBackup mode. The normal RTS/CTS delay is 14 ms at 2.4 kbps and 11 ms at all other speeds when V.13 is enabled. It isunder 2 ms when V.13 is disabled.For the V.13 sequence to be generated by atributary DBM, the following must be set: RTS Cntrl must be set to DTE,CTS Cntrl set to Std or Delay. For the V.13 sequence to function at thecontrol DBM, the following must be set: LSDLead must be set to Std.NOTE: Although this configuration option must be enabled in both the tributary and control DSUs in order to useV.13 signalling, RTS Cntrl propagation only occurs in the tributary-to-control direction.Enab — Select when backing up a circuit that is configured for nondisruptive or mixed diagnostics or rateadaption. When enabled at both ends, LSD is turned ON at the control while RTS is ON at the tributary,and is turned Off when RTS is turned Off at the tributary DBM. The V.13 sequence is sent over thenetwork to tell the control to turn ON LSD (only for a MPTC or MPTT configuration).Disab — Select when configured for point-to-point nondisruptive diagnostics or point-to-point rate adaption; V.13Signaling is turned Off.Dial Test:DisabNext Enab Disab PrevDial Tone Test (only displayed when Full Mode is enabled). When enabled, the DBM periodically checks for a signal ordial tone. If the test fails, the DSU reports a Dial Test Failure alarm in its health and status reports. A Dial Test occursonce every 60 minutes until a failure occurs. Then, the test repeats every minute until the network recovers.Enab — Select to perform a Dial Tone testing.Disab — Set to Disable if the DBM is not to perform Dial Tone testing.DTRCallCon:DisabNext Ansr Disab PrevData Terminal Ready Call Control (only displayed when Full Mode is enabled). DTRCallCon uses the state of the DTRlead to control backup when contact with the remote DSU is lost.Ansr — Select answer when the DTR lead is used forincoming calls. The DBM answers a backup call from theremote DBM when DTR is raised. It drops the call when DTR goes low or will not answer an incoming callif DTR is low.Disab — Select to disable DTR Call Control; the state of the DTR lead is ignored.