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Four tricolored faceplate LEDs indicate the following REG states:
LED
Description and Indications
PWR .................. This LED indicates the unit is receiving sufficient power from the HDSL loops to power the REG.
Off ...................... Insufficient or no power present.
Green ................. Sufficient power for operation.
REG-R LP1 ....... This LED indicates the HDSL signal quality and errors on REG-R loop 1. The REG-R LP1 LED
will flash once when an errored second is detected on REG-R loop 1. If the REG-R LP1 LED flashes
yellow rapidly (six times per second), sealing current is present and the REG is attempting to
synchronize with the other HDSL circuit elements.
Off ...................... No synchronization with the LTU.
Green ................. Synchronized with good signal quality on REG-R loop 1 (> 2 dB margin above
Yellow ................ Synchronized with marginal signal quality on REG-R loop 1 (≤ 2 dB margin
Red ..................... Synchronized with poor signal quality on REG-R loop 1 (≥ 10
REG-R LP2 ....... This LED indicates the HDSL signal quality and errors on REG-R loop 2. REG-R LP2 LED will
flash once when an errored second is detected on REG-R loop 2.
Off ...................... No synchronization with the LTU.
Green ................. Synchronized with good signal quality on REG-R loop 2 (> 2 dB margin above
Yellow ................ Synchronized with marginal signal quality on REG-R loop 2 (≤ 2 dB margin
Red ..................... Synchronized with poor signal quality on REG-R loop 2 (≥ 10
REG-C LP1 ....... This LED indicates HDSL signal quality and errors on REG-C loop 1. It will flash once when an
errored second is detected on REG-C loop 1.
Off ...................... No synchronization with the NTU.
Green ................. Synchronized with good signal quality on REG-C loop 1 (> 2 dB margin above
Yellow ................ Synchronized with marginal signal quality on REG-C loop 1 (≤ 2 dB margin
Red ..................... Synchronized with poor signal quality on REG-C loop 1 (≥ 10
REG-C LP2 ....... This LED indicates HDSL signal quality and errors on REG-C loop 2. It will flash once when an
errored second is detected on REG-C loop 2.
Off ...................... No synchronization with the NTU.
Green ................. Synchronized with good signal quality on REG-C loop 2 (> 2 dB margin above
Yellow ................ Synchronized with marginal signal quality on REG-C loop 2 (≤ 2 dB margin
Red ..................... Synchronized with poor signal quality on REG-C loop 2 (≥ 10
LPBK LED ........ This LED indicates the loopback status of the REG.
Green ................. No loopback in progress.
Amber ................ REG exchange loopback is active.
61246043L3-5A
Table 1. LED Indications
-7
10
BER).
-7
above 10
BER).
-7
10
BER).
-7
above 10
BER).
-7
10
BER).
-7
above 10
BER).
-7
10
BER).
above 10
-7
BER).
Section 61246043L3-5, Issue 1
-7
BER).
-7
BER).
-7
BER).
-7
BER).
3
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