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Installation 152-402-145-02, Issue 2
6 June 16, 2000 H2TU-R-402
VERIFICATION
Verification without an Upstream Device
Verify that the H2TU-R powers up. The following should occur:
• The front-panel ALM LED is a steady red.
• The LOOP LED is flashing green.
• If receiving a DS1 signal, one of the DS1 framing LEDs (ESF or SF) and one of the DS1 line code LEDs
(B8ZS or AMI) is a steady green.
Verification with an Upstream Device
1 Verify that the H2TU-R powers up.
• The front-panel ALM LED is a steady red.
• The LOOP LED is flashing green.
• If receiving a DS1 signal, one of the DS1 framing LEDs (ESF or SF) and one of the DS1 line code LEDs
(B8ZS or AMI) is a steady green.
2 Verify that the H2TU-R attempts to communicate with an upstream device (LOOP LED is flashing green).
One of the following occurs:
• If an upstream device is successfully identified and the HDSL2 loop synchronizes, the LOOP LED lights
a steady green.
• If upstream devices are not successfully identified, the H2TU-R continues to attempt communication
(LOOP LED flashes green) until an upstream device is detected.