Nitsuko 24i/28i/124i/384i Hardware Manual
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3. Installing Extensions and Trunks 3-2CONNECTING BLOCKS Working With DDK Connectors The system uses DDK type connectors for extensions, trunks and optional equipment. Using the 25-pair DDK Installation Cables (P/N 93090) that came with your system makes it easy to connect the PCBs to standard 66M1-50 connecting blocks. In general, each cabinet needs: One 66M1-50 block and DDK Installation Cable for exten- sions and optional equipment. One 66M1-50 block and DDK Installation Cable for trunks. Note:Depending on your PCB configuration and local codes, you may need an additional 66M1-50 block and DDK Installation Cable for optional equipment. Punching Down a DDK Installation Cable (Figures 3-1, 3-2, 3-3) The DDK Installation Cables have DDK connectors installed (in pairs) on one end and are unterminated on the other. 1. For each 66M1-50 block, punch down the DDK Installation Cable in standard color-code order. Refer to Figure 3-4 if you need help with the color code. 2. As you use the following pages to install extensions, trunks and optional equipment, write down the circuit assignments in Figure 3-4. Make additional copies of Figure 3-4 as required. 3. After you have punched down your cables, route them through the side of the cabinet and secure them with the cable tie (on the 28i system) or the strain relief (on the 124i system) (Figures 3-2 and 3-3).
3. Installing Extensions and Trunks3-3CONNECTING BLOCKS Figure 3-1 PUNCHING DOWN DDK INSTALLATION CABLESFigure 3-2 SECURING Figure 3-3 SECURING THE CABLES ON THE 28i THE CABLES ON THE 124i 926 - 47 66M1-50 Connecting Block WHT-BLU BLU-WHT WHT-ORN ORN-WHT WHT-GRN GRN-WHT WHT-BLU BLU-WHT WHT-ORN ORN-WHT WHT-GRN GRN-WHT 926-38
3. Installing Extensions and Trunks 3-4CONNECTING BLOCKS BLOCK TERMCOLOR CODEFUNCTION 25-PAIR CABLE 926 - 39 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 41 42 43 44 45 46 47 48 49 50 31 32 33 34 35 36 37 38 39 40WHT-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-VIO VIO-SLT SLT-VIO Figure 3-4 CONNECTING BLOCK
3. Installing Extensions and Trunks3-5 CONNECTING EXTENSIONS Digital Station (DSTU) PCB Connections (Figure 3-5) The Digital Station PCB has DDK connectors for eight stations. Figure 3-5 DIGITAL STATION CONNECTIONS 1. Following the conventional color code, insert the DDK con- nectors into the PCB. For example, the first DSTU in the system would have these connections: Extension Port DDK Conn Pair 301 1 WHT-BLU / BLU-WHT 302 2 WHT-ORN / ORN-WHT 303 3 WHT-GRN / GRN-WHT 304 4 WHT-BRN / BRN WHT 305 5 WHT-SLT / SLT-WHT 306 6 RED-BLU / BLU-RED 307 7 RED-ORN / ORN-RED 308 8 RED-GRN / GRN-RED Write down the connections for each DSTU PCB in Figure 3- 4. Make additional copies of Figure 3-5 as required. 2. Install a modular jack for each digital extension within six feet of the telephone’s location. See Figure 3-6. 3. For each digital extension, run one-pair 24 AWG station cable from the cross-connect block to the modular jack. 4. Terminate the station cable WHT/BLU - BLU/WHT leads to the RED and GRN lugs in the modular jack. Continued on next page. . . 92001 - 33 Digital Station (DSTU) PCB Digital Station 1 Digital Station 2 Digital Station 3 Digital Station 4 Digital Station 5 Digital Station 6 Digital Station 7 Digital Station 8
3. Installing Extensions and Trunks 3-6 CONNECTING EXTENSIONS Digital Station (DSTU) PCB Connections (Cont’d) 5. Back at the MDF, run one pair of cross-connect wire between the pins on the B block and cross-connect block to complete the connection. 6. Install bridging clips as required. 7. After completing step 6, you should be able to place and answer calls at the extension. 8. Record your entries on Figure 3-4. Figure 3-6 CONNECTING DIGITAL TELEPHONES 625 Modular Jack 25-Pair DDK Installation Cable BLK YEL RED GRN BLU-WHT WHT-BLU 926 - 44 Cross Connect Block One-Pair Cross Connect B Block
3. Installing Extensions and Trunks3-7 CONNECTING EXTENSIONS Analog Station (ASTU) Connections(Figure 3-7) The Analog Station PCB has DDK connectors for four sta- tions. The 28i system allows for a maximum of 2 ASTU’s to be installed. On a 124i system, the maximum allowed is either 15 ASTU PCB’s with a DSTU PCB installed in slot 1, 2, or 3 (providing 60 analog station ports and 8 digital station ports) OR16 ASTU PCB’s with no DSTU PCB installed in the sys- tem (providing 64 analog station ports). Note: A DSTU PCB must be installed when access to system programming is required. Figure 3-7 Analog Station (ASTU) Connections1. Following the conventional color code, insert the DDK con- nectors into the PCB. For example, if the ASTU PCB is the second Station PCB (and a DSTU is the first), the ASTU PCB would have these connections: Extension Port DDK Conn. Pair 309 9 RED-BRN / BRN-RED 310 10 RED-SLT / SLT-RED 311 11 BLK-BLU / BLU-BLK 312 12 BLK-ORN / ORN-BLK Write down the connections for each ASTU PCB in Figure 3-4. Make additional copies of Figure 3-4 as required. 2. Install a modular jack for each analog extension within six feet of the telephone’s location. See Figure 3-8. 3. For each analog extension, run one-pair 24 AWG station cable from the cross-connect block to the modular jack. 4. Terminate the station cable WHT/BLU - BLU/WHT leads to the RED and GRN lugs in the modular jack. Continued on next page . . . Analog Station (ASTU) PCB Status LEDAnalog Station 4 Analog Station 3 Analog Station 2 Analog Station 192001 - 36
3. Installing Extensions and Trunks 3-8 CONNECTING EXTENSIONS Analog Station (ASTU) Connections(Cont’d) 5. Back at the MDF, run one pair of cross-connect wire between the pins on the B block and cross-connect block to complete the connection. 6. Install bridging clips as required. 7. After completing step 6, you should be able to place and answer calls at the extension. 8. Record your entries on Figure 3-4. Figure 3-8 CONNECTING ANALOG TELEPHONES 625 Modular Jack 25-Pair DDK Installation Cable BLK YEL RED GRN BLU-WHT WHT-BLU 926 - 45 Cross Connect Block One-Pair Cross Connect B Block
3. Installing Extensions and Trunks3-9CONNECTING TRUNKS Analog Trunk (ATRU) PCB Connections(Figure 3-9) The Analog Trunk PCB has DDK connectors for four loop start CO trunks and a power failure telephone. Refer to Part 4: Installing Optional Equipment for instructions on connecting a power failure telephone. Figure 3-9 ANALOG TRUNK CONNECTIONS1. Following the conventional color code, insert the DDK con- nectors into the PCB. For example, the first ATRU in the system would have these connections: Trunk DDK Connector Pair 1 WHT-BLU / BLU-WHT 2 WHT-ORN / ORN-WHT 3 WHT-GRN / GRN-WHT 4 WHT-BRN / BRN WHT Write down the connections for each ATRU PCB in Figure 3- 4. Make additional copies of Figure 3-4 as required. 2. For each trunk, run one pair of cross-connect wire between the pins on the cross-connect block and the CPE (customer side) of the telco’s RJ21X (Figure 3-10 on the following page). 3. Install bridging clips as required. Continued on next page . . . Status LED Fuses for Trunk ProtectionPower Failure Telephone Trunk 4 Trunk 3 Trunk 2 Trunk 1 Analog Trunk (ATRU) PCB 92001 - 37
3. Installing Extensions and Trunks 3-10CONNECTING TRUNKS Analog Trunk (ATRU) PCB Connections(Cont’d) 4. After completing step 3, you should be able to place and answer calls over the connected trunk. 5. Record your entries on Figure 3-4. Figure 3-10 CONNECTING ANALOG TRUNKS 25-Pair Cable to Central Office 25-Pair DDK Installation CableTelco RJ21X One-Pair Cross Connect A Block 926 - 46
3. Installing Extensions and Trunks3-11CONNECTING TRUNKS Tie Line Trunk (2EMTU) PCB Connections(Figure 3-11) The Tie Line PCB has DDK connector for two 2-wire (Type 1) (4-conductor), two 2-wire Type 2 (6 conductor), four 4-wire (4 conductor) tie line trunks. 1. Following the conventional color code, insert the DDK con- nectors into the PCB. For example, the first 2EMTU PCB in the system would have these connections: Trunk DDK Connector Pair 1 WHT-BLU / BLU-WHT / WHT-ORN / ORN-WHT 2 WHT-GRN / GRN-WHT / WHT-BRN / BRN WHT Write down the connections for each 2EMTU PCB in Figure 3-4. Make additional copies of Figure 3-4 as required. 2. For each trunk, run cross-connect wires between the pins on the cross-connect block and the CPE (customer side) of the telco’s RJ21X (Figure 3-11). 3. Install bridging clips as required. Figure 3-11 ANALOG TRUNK CONNECTIONS P/N 82492 1 2 1 2 1 2 1 2