Specifications

Reference Guide 6-41
WAN Card PARS Screen
Table 6-14. HDSL Performance Data Screen Actions
ES
An Errored Second (ES) is a second with one or more CRC-6 (ESF), BPV (D4/D-frame), or
CRC-4 (E1) errors,
OR
one or more OOFs,
OR
one or more Controlled Slips.
SES
A Severely Errored Second (SES) is any second with 320 or more CRC-6 (ESF), BPV
(D4/D-Frame), CRC-4 (E1) errors, or one or more OOFs.
UAS
An Unavailable Second (UAS) is any second during which service is unavailable. An
unavailable signal state is declared after ten consecutive Severely Errored Seconds (SESs) are
logged. An unavailable state is cleared after ten consecutive non-Severely Errored Seconds are
logged. Unavailable Seconds are also accumulated if the card has an out-of-service (OOS)
condition.
6.4 PARS Screen
Figure 6-33 displays the PARS Screen for the WAN card. To go to this screen, press “
A
”
(
PARS
command) in the WAN Card Main Screen. PARS feature is to protect the traffic of a
failed T1/E1 transmission line in a ring network. If a T1/E1 line fails then PARS will provide
protection to rerouting the traffic on that line. This means that all 24 time slots (totaling to the
DS1 rate) or 30 time slots (totaling to the E1 rate) will be completely protected.
The traffic rerouting takes affect in less than 300 milliseconds and no network administration
control is involved. This will not effect the voice circuits but the data circuits will be affected.
Action Function
Refresh Redraws the screen and updates information.
Clearregs Clears the user registers and starts over.
24 Hr Toggles to 24-hour interval monitoring.
15 mIn Toggles to 15-minute interval monitoring.
REmote Toggles to remote loop monitoring.
Local Toggles to local loop monitoring.
PgUp Scrolls up through historical intervals (n/a for 24 hour intervals).
pgDn Scrolls down through historical intervals.
Main Returns to the WAN Card Main Screen.