Specifications

Excalibur Multirate DAP Installation and Operation
4-4
Each time you select an option, a new submenu appears, until the lowest level menu is
reached, and the command is executed. To return from any menu to the previous menu,
press the Escape button.
Status Display
Whenever two minutes elapse without a button being pressed, the LCD screen dims (to
reduce power consumption). Whenever an additional 58 minutes elapse without a button
being pressed, the Status Display appears. (See Figure 4-3.) This display remains on the
screen until you press the Escape button or the Top button.
9.6 T L 0 d B m R L - 1 0 d B
Q = B e s t D i a l = N T s t = N
Figure 4-3. Status Display
The Status Display gives you a "snapshot" of the DAP's current operating status. The
following status conditions are shown:
• 9.6 - indicates the DAP's operating speed (9.6 Kbps). Possible displays range
from 2.4 to 64 Kbps. Actual speeds displayed are dependent on the service used.
• TL - shows the DAP's transmit level in dBm. The transmit level is fixed for units
equipped with the 15P09AA-1 or Model D Aggregate card.
• RL - shows the DAP's approximate receive level insertion loss range in -dB for
units equipped with the 15P09AA or Model D Aggregate card. For example, -11
dB indicates the received signal is less than 11 dB. For units equipped with the
Model A or C Aggregate card, it shows the DAP's receive level in -dB.
• Q - shows the quality of the signal received from the telephone line. Receiving
any network control code, a loss of multiport frame, and unknown network
control codes will cause the signal quality to degrade. Possible displays are
Best, Good, Fair, Poor, and Off.
• Dial - indicates whether the DAP is in dial backup operation. If the unit is not
equipped with the Analog, Switched 56, or ISDN IDBU option, Svc is displayed
in place of Dial. Svc - shows the digital data service, LADC, or LDM line used.
Possible displays are DDS, DDSNI, DDSSC, LADC, LDM, CC64, and C64NI.
• Tst - indicates whether a test is in progress.