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SCP-PLL733-010-03H
I
NSTALLATION AND
The following sections describe the tools and procedure for installing and testing the COLU.
R
T
EQUIRED
OOLS AND
No tools are required to install the COLU. For testing, the following tools may be utilized:
•
EBS Telephone
•
No. 2 flat-head screwdriver
•
Optional, PSU-795, COTS Continuity Test Card, 150-1695-01 List 1
I
NSTALLING THE
You can install the COLU in any slot except the three positions labeled COMMON, MUX 1, and MUX 2.
1
Open the retaining latch on the front of the COLU.
2
Insert the COLU into the card guides in a vacant slot in the COTS that corresponds to the location of the
wiring from the CO switch. Refer to the cabling tables provided in the COTS documentation for slot and
Telco cabling assignment.
3
Engage the retaining latch to hold the card in place.
I
NITIALIZATION
After inserting the COLU into the appropriate slot in the COTS, the following events should occur in the order
listed below:
•
All the LEDs go On briefly and then go Off with the exception of the PWR and Fault LEDs, which start 1 Hz
Flash.
•
After about 5 seconds, the COLU applies power and goes into Start-Up mode. If an RT is present and no
power feed shorts, opens, or ground faults are detected, the PWR LED is On green. HDSL Start-Up is
initiated.
•
As the COLU continues with power-up mode (if an RT is present), the PWR LED is On solid and the SYNC
LED Flashes, indicating the HDSL line is attempting to acquire synchronization. When synchronization is
complete, the SYNC LED is On.
•
The Margin LED is On yellow indicating the COLU signal-to-noise ratio is equal or below the selected
signal-to-noise ratio threshold on the COLU. The Margin LED flashes if the signal-to-noise ratio of the HDSL
line is equal or below the selected signal-to-noise ratio threshold on the RT. The Margin LED is Off when the
signal-to-noise ratio of the HDSL line crosses the selected signal-to-noise ratio. This takes approximately 30
seconds to 3 minutes, according to the loop length.
•
Test each subscriber line with the test set. Observe the LED indicators for correct activity (where n equals the
EBS line):
–
Off-hook (Active call): EBSn LED is On
–
Ringing: EBSn LED Flashes at 8 Hz
–
On-hook (no Active call): EBSn LED is Off
PLL-733 List 1
T
T
E
EST
QUIPMENT
COLU
S
EQUENCE
January 6, 2003
EST
Required Tools and Test Equipment
7
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