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FT1 REPEATER
1245211L1
Section 61245211L1-5
C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE Issue 1, December 1998
OR DECREASE IN RELIABILITY.
CLEI Code # T1R6GMJDAA
HANDLING PRECAUTIONS REQUIRED.
PRACTICES
SINGLE-WIDE FT1 REPEATER
INSTALLATION/MAINTENANCE
Contents
1. General ................................................................................ 1
2. Installation ........................................................................... 3
1 GND
3. Installation of FT1 Repeaters in ADT
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The Single-Wide FT1 Repeater operates at line The ADTRAN Single-Wide FT1 Repeater provides losses up to 35.25 dB at 200␣ kHz, in both directions three faceplate LEDs which indicate signal quality, from the repeater and regenerates the 2B1Q signals error conditions, and loopback status. See Table A to meet the transmitted power spectrum of Bellcore for a description of the LED indicators. TA-NWT-0001210. For deployment guidelines, Operating power is derived from an ADTRAN FT1 refer to subsectio
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The connector pinout for the Single-Wide FT1 2. INSTALLATION Repeater is shown in Figure 2. CAUTION This equipment contains static-sensitive components. Be sure to follow proper electrostatic discharge procedures before handling or installing the equipment. 1 GND The Single-Wide FT1 Repeater circuit pack is 2 NC shipped in a separate carton and must be installed in 3 T CUSTOMER an environmental apparatus case. LOOP 1 4 R 5 T NETWORK Remove the Single-Wide FT1 Repeater circuit pack LOOP 1 6 R
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4. MAINTENANCE Replacement of Circuit Packs When testing indicates a faulty circuit pack, refer to The ADTRAN Single-Wide FT1 Repeater requires the apparatus case installation/maintenance practice no routine maintenance. In case of equipment for the entry and pressurization control. Replace the malfunction, perform an in-band loopback from the faulty circuit pack. Request a loopback test from central office (CO), as described in Appendix A of the CO, per Appendix A. this practice. If a malf
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5. CSA DEPLOYMENT GUIDELINES Recommended maximum local loop loss information for PIC cable at 70°F, 135Ω, resistive The ADTRAN FT1 DSL system including the termination is provided in Table C. ADTRAN Single-Wide FT1 Repeater is designed to provide Fractional DS1 based services over loops designed to comply with Carrier Service Area Table C. Loop Insertion Loss Data (CSA) guidelines. CSA deployment guidelines are Frequency Maximum Loss given below. (Hz) (dB) 1. All loops are non-loaded only.
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6. SPECIFICATIONS For service, RMA requests, or further information, contact one of the following numbers. Specifications for the ADTRAN Single-Wide FT1 Repeater appear in Table D. ADTRAN Customer Service ADTRAN Telco Technical Support. (800) 726-8663 7. WARRANTY AND CUSTOMER SERVICE Standard support hours ..................... Monday-Friday ADTRAN will replace or repair this product within ten years from the date of shipment if it does not 7 a.m. - 7 p.m. CST meet its published specifications
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APPENDIX A FT1 LOOPBACKS 1. GENERAL The FT1 DP network loopback is a digital loopback This Appendix is an overall reference to the toward the CO (see Figure A-2). This loopback is loopback capabilities of the ADTRAN Fractional T1 initiated by the OCU latching loopback command system. Included in the Appendix is a description of (N1010101), by a push-button when available, or by the FT1 loopbacks and the methods for activating the craft interface. The OCU latching loopback the FT1 loopbacks.
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There is one loopback available to the FT1 The FNID network loopback is a digital loopback Repeater. The FT1 Repeater Network loopback is a toward the CO as illustrated in Figure A-5. This digital loopback toward the CO as shown in Figure loopback is initiated by the DDS latching loopback A-4. The loopback is initiated by the DDS latching code (NEI Position 1 - N1000001 for a non- loopback code for NEI Position 1 (N1000001). The repeatered loop, or NEI Position 2 -N1000001 for a NEI Position
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3. LOOPBACK ACTIVATION AND Latching loopbacks for the FT1 system are activated DEACTIVATION by transmitting the following latching loopback sequence in the primary DS0 of the FT1 system: This section describes loopback activation and deactivation methods for the ADTRAN Fractional A.Minimum of 35 transition in progress (TIP) T1 system. Loopback activation and deactivation is bytes (N0111010). controlled with the push-button located on the front B.Minimum of 35 loopback select code (LSC) panel, t
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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 loopback that is in the loop-up state in excess of the loopback timeout will be deactivated. A-4 Section 61245211L1-5, Issue 1 61245211L1-5A
