Specifications

Excalibur Multirate DAP Installation and Operation
1-8
• End-to-End Error
• DDS Loop
• Digital Loop, standard and V.54
• V.54 Loop 2 and L2 Error (V.54 Loop 2 not available for DDS with interruptive
secondary channel mode)
• Local-Error
• Network-Error
In addition to these operator-initiated tests, the Excalibur Multirate DAP automatically
runs an internal self-test each time it is powered up. This test verifies the functionality of
the DAP's internal circuitry. Any failures are immediately displayed on the front panel.
Alarm Reporting
To alert you to potential problems in the network, the DAP reports a wide variety of
alarm conditions. You can set the DAP to sound a beeper, light a LED indicator, and/or
display an alarm message when it detects an alarm condition. Alarm conditions are also
reported to the CMS network management system (if the network is so equipped). The
DAP stores the reported alarms in memory.
Line Parameter Monitoring
The Excalibur Multirate DAP continuously monitors and computes the values of a
number of key DDS line parameters. Monitored parameters include line availability
statistics, receive level, and signal quality.
Call Messages
The Excalibur Multirate DAP allows you to exchange messages with a remote DAP
operator without making costly telephone calls. With this feature, you can enter up to 10
different numerical codes (0 - 9 ), each signifying a previously agreed upon message.
The DAP then sends the code through the secondary channel to the remote unit. This
feature is not available for DDS with interruptive secondary channel mode or Clear
Channel 64 Kbps with interruptive secondary channel mode.