Instruction/ maintenance manual of the product FT1 ADTRAN
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Section 61245211L1-5, Issue 1 61245211L1-5A 1 PRACTICES SINGLE-WIDE FT1 REPEA TER INST ALLA TION/MAINTENANCE Contents 1. General ................................................................................ 1 2. Installation .......................
2 Section 61245211L1-5, Issue 1 61245211L1-5A The ADTRAN Single-Wide FT1 Repeater provides three faceplate LEDs which indicate signal quality, error conditions, and loopback status. See Table A for a description of the LED indicators. Operating power is derived from an ADTRAN FT1 DP, independent of line impedance or wire gauge.
Section 61245211L1-5, Issue 1 61245211L1-5A 3 2. INSTALLATION CAUTION This equipment contains static-sensitive components. Be sure to follow proper electrostatic discharge procedures before handling or installing the equipment.
4 Section 61245211L1-5, Issue 1 61245211L1-5A 4. MAINTENANCE The ADTRAN Single-Wide FT1 Repeater requires no routine maintenance. In case of equipment malfunction, perform an in-band loopback from the central office (CO), as described in Appendix A of this practice.
Section 61245211L1-5, Issue 1 61245211L1-5A 5 Table C. Loop Insertion Loss Data Frequency Maximum Loss (Hz) (dB) 3000 ...................... 12.0 10,000 ...................... 15.0 50,000 ...................... 25.5 100,000 ...................... 30.0 150,000 .
6 Section 61245211L1-5, Issue 1 61245211L1-5A Loop Interface Modulation Type .................................. 2B1Q Mode ..................................................... Full Duplex, Echo Cancelling Number of Pairs ..............................
A-1 Section 61245211L1-5, Issue 1 61245211L1-5A APPENDIX A FT1 LOOPBACKS 1. GENERAL This Appendix is an overall reference to the loopback capabilities of the ADTRAN Fractional T1 system. Included in the Appendix is a description of the FT1 loopbacks and the methods for activating the FT1 loopbacks.
A-2 Section 61245211L1-5, Issue 1 61245211L1-5A There is one loopback available to the FT1 Repeater. The FT1 Repeater Network loopback is a digital loopback toward the CO as shown in Figure A-4. The loopback is initiated by the DDS latching loopback code for NEI Position 1 (N1000001).
A-3 Section 61245211L1-5, Issue 1 61245211L1-5A 3. LOOPBACK ACTIVATION AND DEACTIVATION This section describes loopback activation and deactivation methods for the ADTRAN Fractional T1 system. Loopback activation and deactivation is controlled with the push-button located on the front panel, through craft interface, or latching loopback codes.
A-4 Section 61245211L1-5, Issue 1 61245211L1-5A 4. LOOP-UP STATE In the loop-up state, the active FT1 loopback will provide a continuous loop for the FT1 bandwidth. The data flow is continuously monitored for the loop deactivation commands to deactivate the loopbacks.
An important point after buying a device ADTRAN FT1 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought ADTRAN FT1 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data ADTRAN FT1 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, ADTRAN FT1 you will learn all the available features of the product, as well as information on its operation. The information that you get ADTRAN FT1 will certainly help you make a decision on the purchase.
If you already are a holder of ADTRAN FT1, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime ADTRAN FT1.
However, one of the most important roles played by the user manual is to help in solving problems with ADTRAN FT1. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device ADTRAN FT1 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
