Specifications

Excalibur Multirate DAP Installation and Operation
5-34
Controller
This parameter specifies whether your DAP is configured for external control (CMS) or
RCP control. If you want external control, select No. If you want RCP control, select
Yes. If Yes is selected, diagnostic control may be initiated from CMS or the front panel
but not simultaneously.
RTS Mode
The RTS Mode parameter specifies whether the unit monitors for constant RTS or an
RTS change of state at the DTE interface. The RTS signal is monitored to detect certain
network problems, such as streaming or idle channel. If Constant is selected, the unit
monitors for constant RTS at the DTE interface. Failure to detect constant RTS for the
period of time set in the RTS Threshold Timer results in a Transmit Channel Idle (TCI)
alarm. If Switched is selected, the unit monitors RTS for a change of state at the DTE
interface. If RTS is on for more than the specified period of time, the unit generates a
Transmit Channel Streaming (TCS) alarm. It can also generate an Antistreaming Started
alarm when the Antistreaming function is enabled.
Note: For the RTS Simulation and RTS Antistreaming features to operate properly, this
parameter must be set to Switched.
DCD Mode
The DCD Mode parameter specifies whether the unit monitors for constant DCD or a
DCD change of state at the DTE interface. The DCD signal is monitored to detect certain
network problems, such as streaming or idle channel. If Constant is selected, the unit
monitors for constant DCD at the DTE interface. Failure to detect constant DCD for the
period of time set in the DCD Threshold Timer results in a Receive Channel Idle (RCI)
alarm. If Switched is selected, the unit monitors DCD for a change of state at the DTE
interface. If DCD is on for more than the specified period of time, the unit generates a
Receive Channel Streaming (RCS) alarm.
Note: For the DCD Simulation and DCD Antistreaming features to operate properly,
this parameter must be set to Switched.
Secondary Channel Format
This parameter allows you to select the secondary channel format. Excalibur is an
improved version of Milgo's secondary channel format. However, this format is
incompatible with Milgo's CMS DSU, CMS DSU RD, and CMS 6424 products. The
secondary channel formats available for each service are listed in Table 5-12.