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Section 61245207L2-5C
Issue 3, July 2000
CLEI Code # D4D31R8D _ _
FT1 DP
Fractional T1 Dataport For Nortel DE-4E Shelf
Installation and Maintenance
CONTENTS
1. GENERAL ..................................................................1
2. INSTALLATION .......................................................2
3. CONNECTIONS ........................................................6
4. DSL SYS
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The FT1 Digital Subscriber Loop (DSL) local loop Time Slot Allocation operates as an independent subsystem, over a single The bandwidth may be taken by the FT1 DP in twisted pair. The FT1 DP communicates over this contiguous or alternating time slots. These slots must twisted pair to the Fractional Network Interface not have other channel cards plugged in the slots taken Device (FNID) and/or FT1 repeater listed below: by the FT1 DP bandwidth. This will cause contention on the transmit side of
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Table 2. SW1 Option Settings (Default settings are indicated in bold typeface.) Switch Function Description SW1-1 ...... Code Select ............................................ SW1-1 On selects B8ZS line code. SW1-1 Off selects AMI. Off .......... AMI On .......... B8ZS SW1-2 ...... Framing .................................................. SW1-2 Off selects SF. SW1-2 On selects ESF. Off .......... SF On .......... ESF SW1-3 ...... Channel Select ....................................... Select
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Table 3. SW2 and SW3 Option Settings (Default settings are indicated in bold typeface) Switch Function Description SW3-4 ........... A/B Signaling for Channel 1 ....... Enables or Disables A/B Robbed Bit Signaling for Channel 1. Off ........ A/B Signaling Disabled On ......... A/B Signaling Enabled SW3-3 ........... A/B Signaling for Channel 2 ....... Enables or Disables A/B Robbed Bit Signaling for Channel 2. Off ........ A/B Signaling Disabled On ......... A/B Signaling Enabled SW3-2 ........
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P1 By selecting -190 V, the FT1 DP can power up to two FT1 DP Option Selections FT1 repeaters and a locally-powered FNID. Configuration strap P1, illustrated in Figure 2, selects FT1 DP settings. The settings on the FT1 DP are encoded and transmitted to the FNID once the circuit has achieved synchronization. Faceplate Indicators The FT1 DP has six faceplate LEDs which indicate operational status. Table 4 defines these LEDs. P1 o -137 V o o Figure 2. P1 Switch Location Table 4. Front Panel Indi
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3. CONNECTIONS level problems that may occur at installation or during operation of the FT1 HDSL system. The following The FT1 DP occupies one card slot in a Nortel DE-4E subsections describe additional testing features shelf. Power signaling is provided to the card through conducted with the front panel Bantam jacks as well the backplane of the channel bank. See Figure 3 for as other faceplate features. FT1 DP edge connector wiring. Bantam Jack Description The front panel of the FT1 DP cont
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5. CONTROL PORT OPERATION is fixed at 8 data bits, no parity, and 1 stop bit. The supported terminal type is VT-100 or compatible. The FT1 DP provides a faceplate-mounted DB-9 connector that supplies an RS-232 interface for connection to a controlling terminal. The pinout of NOTE the DB-9 is illustrated in Figure 5. If you are using a personal computer (PC) with terminal emulation capability, be sure to The terminal interface operates at data rates from disable any power saving programs. 2.4
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space bar characters, which are used by the FT1 DP to Menu: determine the speed of the terminal. Once the speed 1. Current System Status has been determined, an Introductory Menu will 2. Performance History appear, as illustrated in Figure 6. 3. ADTRAN Information From the Introductory Menu, the Main Menu may be 4. Loopback Options selected. The Main Menu provides access to detailed 5. Self-Test performance and configuration information, as 6. Provisioning illustrated in Figure 7. 7. Troublesh
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The Current System Status Screen, illustrated in NOTE Figure 8, provides quick access to FT1 DP status The first number is for the current 15-minute information. period. The second number is for the current The Elapsed Time display indicates the period of time 24-hour period. since the unit began collecting performance information. At each 15-minute interval, the A measure of signal quality for each DSL loop is performance information is transferred to the graphically depicted on the bottom ri
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The Performance History Screen displays 15-minute Figure 10 depicts the FT1 DP Loopback Options and 24-hour registers for several points in the circuit. Screen. Loopback may be initiated or terminated Figure 9 depicts the Performance History Screen. using this screen. A status of current loopback conditions also appear. PERFORMANCE HISTORY 24 HOUR REGISTERS 15 MINUTE REGISTERS ---ES---SES--
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Figure 11 depicts the Self-Test Options Screen. A Figure 12 shows the Provisioning Options screen. test of the FT1-DP and the FNID may be initiated Settings for all provisioning options may be from this screen. configured via the provisioning screen. SELF-TEST Press “S” to initiate FT1-DP and FNID self-tests. Press “M” to return to the Main Menu. Figure 11. Self-Test Options Screen PROVISIONING ___________________________
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The Troubleshooting Display, shown in Figure 13, graphically depicts a DSL circuit. The unit monitors red, yellow, and blue alarm conditions in the circuit. Once a fault location is suspected, the corresponding portion of the circuit on the screen is highlighted and a message describing the failure will appear. TROUBLESHOOTING DISPLAY FT1-DP FNID _____ _____
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6. DSL DEPLOYMENT GUIDELINES Recommended maximum local loop loss information for PIC cable at 70°F, 135Ω resistive termination, is The ADTRAN FT1 DSL system is designed to provided in Table 6. provide Fractional DS1 based services over loops designed to comply with Carrier Service Area (CSA) Table 6. Loop Insertion Loss Data guidelines. CSA deployment guidelines are given below. Frequency (Hz) Maximum Loss (dB) 1. All loops are non-loaded only. 3000 .................................... 12.0 2
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Contact Customer and Product Service (CAPS) prior 7. MAINTENANCE to returning equipment to ADTRAN. The ADTRAN FT1 DP requires no routine maintenance. In case of equipment malfunction, use For service, CAPS requests, or further information, the features supplied with the FT1 DP to help locate contact one of the following numbers: the source of the problem. ADTRAN Sales ADTRAN does not recommend that repairs be Pricing/Availability performed in the field. Repair services may be (800) 827-0807 o
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Table 8. FT1 DP Product Specifications Loop Interface Modulation Type............................... 2B1Q Mode ................................................. Full Duplex, Echo Cancelling Number of Pairs ................................ One Bit Rate ............................................. 784 kbps Baud Rate .......................................... 392K baud Service Range ................................... Defined by Carrier Service Area Guidelines Loop Loss ..........................
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16 Section 61245207L2-5, Issue 3 61245207L2-5C
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Appendix A FT1 Loopbacks GENERAL back to the network. The FT1 DP CPE loopback This Appendix is an overall reference to the loopback loops the FT1 signal back to the customer. capabilities of the ADTRAN Fractional T1 system. The FT1 DP network loopback is a digital loopback Included in this Appendix is a description of the FT1 toward the CO (see Figure A-2). This loopback is loopbacks and the methods for activating the FT1 initiated by the OCU latching loopback command loopbacks. (N1010101), or
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There is one loopback available to the FT1 Repeaters. loopback is initiated by the DDS latching loopback The FT1 Repeater Network loopback is a digital code for NEI Position 1 (N1000001) for a loopback toward the CO as shown in Figure A-4. non-repeatered loop, or NEI Position 2 (N1000001) The loopbacks are initiated by the DDS latching for a single repeater loop or by NEI Position 3 loopback codes for NEI Position 1 (N1000001) for (N1000001) for a two repeater loop; by the craft FT1 #1 or NEI P
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LOOPBACK ACTIVATION/DEACTIVATION sequence in the primary DS0 of the FT1 system: This section describes loopback activation and A.Minimum of 35 transition in progress (TIP) bytes deactivation methods for the ADTRAN Fractional T1 (N0111010). system. Loopback activation and deactivation is B. Minimum of 35 loopback select code (LSC) bytes as controlled with the push-button located on the front defined in Table 1. panel, through craft interface, or latching loopback C. Minimum of 100 loopback enabl
