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ADTRAN FT1 manual

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Table of contents for the manual

  • Page 1

    Section 61245211L1-5, Issue 1 61245211L1-5A 1 PRACTICES SINGLE-WIDE FT1 REPEA TER INST ALLA TION/MAINTENANCE Contents 1. General ................................................................................ 1 2. Installation ........................................................................... 3 3. Installation of FT1 Repeaters in ADTRAN A[...]

  • Page 2

    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. The repeater uses so[...]

  • Page 3

    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. The Single-Wide FT1 Repeater circuit pack is shipped in a separate carton and must be installed in an environmental appara[...]

  • Page 4

    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. If a malfunction is confirmed, replace the Single-Wide FT1 Repeater. FT1 Repeater L[...]

  • Page 5

    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 ...................... 32.75 200,000 ...................... 35.25 5. CSA DEPLOYMENT GUIDEL[...]

  • Page 6

    6 Section 61245211L1-5, Issue 1 61245211L1-5A Loop Interface Modulation Type .................................. 2B1Q Mode ..................................................... Full Duplex, Echo Cancelling Number of Pairs ................................... One Bit Rate ................................................. 784 kbps per pair Baud Rate ..[...]

  • Page 7

    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. 2. FT1 LOOPBACKS Figure A-1 shows the application [...]

  • Page 8

    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). The NEI Position 1 latching loopback is detected in the primary [...]

  • Page 9

    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 pu[...]

  • Page 10

    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. Also, a loopback timeout is checked. If the loopback timeout is enabled, any loop[...]