Nitsuko 24i/28i/124i/384i Hardware Manual
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3. Installing Extensions and Trunks3-3 INSTALLING 25-PAIR CABLES Installing Trunk Cross-Connect Blocks It is also recommended to install cross-connect blocks for each of the systems major trunk device groups. Cross-connect blocks provide an easy way to troubleshoot, determine port identification numerically, and determine trunk port utilization. All major trunk port devices must be bridged from the RJ21X to trunk cross connect blocks in groups of eight (16 pins). Each 24FU trunk filter unit interfaces with 8ATRU trunk port PCBs using a 16-pin filter cable. Install cross-connect from the RJ21X to the trunk cross-connect blocks for the following in groups of eight: - analog loop start lines - analog ground start trunks - DID trunks (four circuits per PCB) - Tie lines (four circuits per PCB) Note:The systems DID trunk and Tie line PCBs interface four DID or Tie line circuits per PCB. The remaining four circuits from the trunk port slot are not used. Figure 3-1 TYPICAL TRUNK CABLING LAYOUT 92000 - 120 MDF Cable Brackets are located in same position on opposite side
3. Installing Extensions and Trunks 3-4 INSTALLING EXTENSIONS Key Extension Cabling (Figure 3-2) Each key extension requires one-pair twisted station cable from the MDF to the modular jack. A maximum of 48 extensions can be installed per 50-pin connector on each 48FU filter unit. To connect key station cabling: 1. Punch down one pair 24 AWG station cable for each key telephone to a cross-connect block. 2. Run one-pair cross-connect from the cross-connect block to the extension (B) block for each extension. 3. Connect the extension (B) blocks 25-pair cable to he corre- sponding 48FU filter unit. 4. Install bridging clips on the extension (B) block. Installing a Key Telephone(Figure 3-2) 1. Install a modular jack for each extension. The modular jack should be within six feet of the phone. 2. For each extension, run one-pair 24 AWG station cable from the cross-connect block to a modular jack. Ground the unused pair. 3. Terminate the extension leads to GRN/RED of the modular jack. Terminate the unused leads to the jack. Figure 3-2 INSTALLING A KEY TELEPHONE 625 Modular Jack 25-pair cable to 48FU PCB BLK YEL RED GRN BLU-WHT WHT-BLU 920 - 123a Cross Connect BlockB Block
3. Installing Extensions and Trunks3-5 INSTALLING SINGLE LINE TELEPHONES Single Line Extension Cabling Each single line extension requires one-pair twisted station cable from the MDF to the modular jack. A maximum of 48 extensions can be installed per 50-pin connector on each 48FU. A 90-105 VAC ring generator must be connected to the Main Cabinet to provide ringing to single line sets. To connect station cabling: 1. Punch down one pair 24 AWG station cable for each single line telephone to a cross-connect block. 2. Punch down cross-connect from the clips on the cross-con- nect block to their corresponding clips on the extension (B) block. 3. Connect the extension (B) blocks 25-pair cable to the corre- sponding 48FU filter unit. 4. Install bridging clips on the extension (B) block. Installing a Single Line Telephone To install a single line telephone: 1. Install a modular jack for each single line telephone. The modular jack should be within six feet of the phone. 2. For each extension, run one-pair 24 AWG station cable fromthe cross-connect block to a modular jack. 3. Terminate the extension leads to GRN/RED of the modular jack. Terminate the unused leads to the jack. Figure 3-3 INSTALLING A SINGLE LINE TELEPHONE 625 Modular Jack 25-pair cable to 48FU PCB BLK YEL RED GRN BLU-WHT WHT-BLU 92000 - 150 Cross Connect BlockB Block
3. Installing Extensions and Trunks 3-6 EXTENSION CUTDOWN SHEET Extension Cutdown Sheet Configuration (Figure 3-4 and 3-5) Due to the inherent flexibility of the universal PCB slot configura- tion, standard cutdown sheets for extension cabling do not apply. Note:The order that the extension PCBs (8/16ASTU, 16DSTU) are installed determines the assigned extension number. For example, given that a 16DSTU is installed in slot #1 and uses extension numbers 301-316, if three 16D/ASTU PCBs were installed in the Main Cabinet in the order below, the num- bering plan would correspond as follows:To determine extension assignments for the system cutdown, the installer must identify the following in order: Order of installation Cabinet (Main, Exp1, Exp2) Slot used PCB type (8ASTU, 16ASTU, 16DSTU, PGDU) 48FU filter unit 48FU 16-pin connector (upper, lower) Amphenol connector (B1, B2) To determine where any group of eight extensions is installed, note the order of install, cabinet, slot, filter unit, amphenol (B) connector used, and PCB type. On the following page is the extension cutdown sheet (Figure 3- 4). Make as many copies as you need. Be sure to keep careful records of your installation. Refer to the sample extension cut- down sheet (Figure 3-5) if you need help completing Figure 3-4.
3. Installing Extensions and Trunks3-7 EXTENSION CUTDOWN SHEET Figure 3-4 EXTENSION CUTDOWN SHEET Figure 3-5 SAMPLE EXTENSION CUTDOWN SHEET CONN PIN 48 FU CN4 48 FU CN1 CN1BLOCK TERMCOLOR CODEPCB ID FUNCTION26 1 27 2 28 3 29 4 30 5 31 6 32 7 33 81 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16WHT-BLU BLU-WHT WHT-ORN ORN-WHT WHT GRN GRN-WHT WHT-BRN BRN-WHT WHT-SLT SLT-WHT RED-BLU BLU-RED RED-ORN ORN-RED RED-GRN GRN-RED PLACE STICKER HERE 16 DSTU LOWER Station Block B1 B1 48 FU1EXP 1 MAIN MAIN EXP 2 48 FU2 48 FU248 FU3 48 FU4 B2 Order Of Install Slot # 8 ASTU UPPER 16 ASTU LOWER 16 ASTU UPPER 16 DSTU LOWER 16 DSTU UPPER PG LOWER CONN PINBLOCK TERMCOLOR CODEPCB ID FUNCTION26 1 27 2 28 3 29 4 30 5 31 6 32 7 33 8 34 9 35 10 36 11 37 12 38 13 39 14 40 15 41 16 42 17 43 18 44 19 45 20 46 21 47 22 48 23 49 2450 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 4849 WHT-BLU BLU-WHT WHT-ORN ORN-WHT WHT GRN GRN-WHT WHT-BRN BRN-WHT WHT-SLT SLT-WHT RED-BLU BLU-RED RED-ORN ORN-RED RED-GRN GRN-RED RED-BRN BRN-RED RED-SLT SLT-RED BLK-BLU BLU-BLK BLK-ORN ORN-BLK BLK-GRN GRN-BLK BLK-BRN BRN-BLK BLK-SLT SLT-BLK YEL-BLU BLU-YEL YEL-ORN ORN-YEL YEL-GRN GRN-YEL YEL-BRN BRN-YEL YEL-SLT SLT-YEL VIO-BLU BLU-VIO VIO-ORN ORN-VIO VIO-GRN GRN-VIO VIO-BRN BRN-VIOVIO-SLT NOT USED PLACE STICKER HERE PLACE STICKER HERE PLACE STICKER HERE B1 48 FU1EXP 1 MAIN EXP 2 48 FU2 48 FU3 48 FU4 B2 48 FU CN4 48 FU CN5 48 FU CN6 48 FU CN1 48 FU CN2 48 FU CN3 Order Of Install Slot # 8 ASTU UPPER 16 ASTU LOWER 16 ASTU UPPER 16 DSTU LOWER 16 DSTU UPPER PG LOWER Order Of Install Slot # 8 ASTU UPPER 16 ASTU LOWER 16 ASTU UPPER 16 DSTU LOWER 16 DSTU UPPER PG LOWER Order Of Install Slot # 8 ASTU UPPER 16 ASTU LOWER 16 ASTU UPPER 16 DSTU LOWER 16 DSTU UPPER PG LOWER
3. Installing Extensions and Trunks 3-8 INSTALLING CO/PBX LINES Ground Start/Loop Start Line Cabling Ground start trunks/loop start lines must be bridged from the telco RJ21X to a line cross-connect block (A). Each ground/loop start CO/PBX line requires one-pair cross-connect cable from the RJ21X to the line (A) block. The A block connects to the 24FU filter unit with a 25 pair cable. The line (A) block(s) should be arranged in groups of 8 lines (16 pins) to correspond to the 24FU PCB, filter cable and PCB slot. Installing Ground Start Trunks/Loop Start Lines (Figures 3-6 and 3-7) To install a ground start trunk/loop start line: 1. Punch down one pair cross-connect to the tip and ring leads for each line on the telco RJ21X CPE (customer) side of the block, (Figure 3-6). 2. Punch down the other end of the cross-connect to the line (A) block (in groups of 8 lines of the same line type). 3. Punch down a 25-pair cable to the opposite side of the line (A) block. 4. Plug a 25-pair connector into the corresponding 24FU filter unit (Figure 3-7). 5. Install bridging clips on the A block. 6. Plug in the filter cables as required.Note: Repeat steps 1-5 for each ground start trunk/loop start line. Label cross-connect blocks A2, A3, etc . 8ATRU-LS1 8 loop start lines 8ATRU-LS1 with a GSAU 8 ground start trunks
3. Installing Extensions and Trunks3-9 INSTALLING CO/PBX LINES Figure 3-6 TYPICAL TRUNK/LINE INSTALLATION Figure 3-7 INSTALLING GROUND START TRUNK/LOOP START LINES 24FU PCB Bridging Clips 8 Loop Start Lines 8 Ground Start Trunks 8 Loop Start LinesOne-Pair Xconnect Filter Cable8ATRU-LS1 8ATRU-LSI 8ATRU-LS1GSAU 92000 - 207 CN1RUN BLK CN1RUN BLK CN1RUN BLK Line A Block Telco RJ21X 25-Pair Cable Loop Start Lines 1-8 Loop Start Lines 17-24 Ground Start Trunks 9-16 Bridging Clips Bridging Clips8 Loop Start Lines 4 Tie Trunks 8 Ground Start Trunks4 DID Trunks Not used One-Pair Xconnect 2-Pair Xconnect 92000 - 210 Line A1 Block Line A2 Block Telco RJ21X 25-Pair Cable 25-Pair CableTo 24 FU PCB To Central Office To 24 FU PCB Loop Start DID Ground Trunk Tie Line
3. Installing Extensions and Trunks 3-10 INSTALLING DID TRUNKS DID Trunk Description Direct Inward Dialing trunks must be bridged from the telco RJ21X to a line cross-connect (A) block. Each DID Trunk requires one- pair cross-connect from the RJ21X to the line (A) block. The A block connects to the 24FU filter unit with a 25-pair cable. The line (A) block should be arranged in groups of 4 DID trunks (8 pins) to correspond with the 24FU PCB, filter cable, and cabinet slot equipped with a 4ATRU-LD1. Note:The 4ATRU-LD1 PCB interfaces 4 DID trunks to the system but uses 8 system line ports per PCB. Installing DID Trunks (Figure 3-8) 1. Punch down one pair cross-connect to the tip and ring leads for each DID trunk on the CPE (customer) side of the RJ21X. 2. Punch down the other end of the cross-connect to the line (A) block tip and ring leads (in groups of 4 DID trunks). 3. Punch down a 25-pair cable to the opposite side of the line (A) block. 4. Plug in a 25-pair connector to the corresponding 24FU filter unit. 5. Install bridging clips on the A block.Note:Repeat steps 1-5 for each DID trunk. Label cross-con- nect blocks A2, A3, etc. Figure 3-8 INSTALLING DID TRUNKS CN2RUNBLK CN2RUNBLK 24FU PCB Bridging Clips 4 DID Trunks 4 DID TrunksOne-Pair Xconnect DID Trunks 9-12 Not used Not used DID Trunks 1-4 Filter Cable 4ATRU-LD14ATRU-LD1 920 - 209a Line A Block Telco RJ21X 25-Pair Cable
3. Installing Extensions and Trunks3-11INSTALLING TIE LINES Tie Line Description Tie lines (Type I E&M 4-conductor) must be bridged from the telco RJ21X to a line cross-connect (A) block. Each tie line requires two- pair cross-connect from the RJ21X to the line (A) block. The A block connects to the 24FU filter unit with a 25-pair cable. The line (A) block must be arranged in groups of 4 tie lines (16 pins) to correspond with the 24FU PCB, filter cable, and cabinet slot equipped with a 4ATRU-EMI. Note:The 4ATRU-EMI PCB interfaces 4 tie lines to the sys- tem but uses 8 system line ports per PCB. Installing Tie Lines (Figure 3-9) 1. Punch down two pair cross-connect on the tip, ring, E and M leads for each tie line on the CPE (customer) side of the RJ21X. 2. Punch down the other end of the cross-connect to the line (A) block tip ring, E and M leads (in groups of 4 lines). 3. Punch down a 25-pair cable to the opposite side of the line (A) block. 4. Plug a 25-pair connector into the corresponding 24FU filter unit. 5. Install bridging clips on the A block.Note:Repeat steps 1-5 for each Type I 4-conductor line. Label cross-connect blocks A2, A3, etc. Figure 3-9 INSTALLING TIE LINES 24FU PCB Bridging Clips 4 Tie Lines 4 Tie Lines 4 Tie Lines2-Pair Xconnect Filter Cable 4ATRU-EMI4ATRU-EMI4ATRU-EMI 920 - 208A Line A Block Telco RJ21X 25-Pair Cable TIP RING E M
3. Installing Extensions and Trunks 3-12 LINE/TRUNK CUTDOWN SHEET CO/PBX Line Cutdown Sheet Configuration (Figures 3-10 and 3-11) Due to the flexibility of the system universal PCB slot configu- ration, standard cutdown sheets for CO/PBX line cabling do not apply. Note:The order in which the 8ATRU PCBs are installed determines the assigned line circuit number. For example, if four 8ATRUs are installed in the Main Cabinet in the following order, the following numbering plan would be in effect: To determine extension assignments for the system cutdown, the installer must identify the following in order: Order of installation Cabinet (Main, Exp1, Exp2) Slot used 24FU filter unit 24FU 16-pin connector (upper, lower) To determine where any group of lines are installed, note the order of install, cabinet, slot, and filter unit. On the following page is the line cutdown sheet (Figure 3-10). Make as many copies as you need. Be sure to keep careful records of your installation. Refer to the sample line cutdown sheet (Figure 3-11) if you need help completing Figure 3-10.