COMSPHERE 3500 SERIES DATA SERVICE UNITS MODELS 3510 AND 3511 USER’S GUIDE Document No.
COMSPHERE 3500 Series Data Service Units COMSPHERE 3500 Series Data Service Units Models 3510 and 3511 User’s Guide 3510-A2-GN32-50 6th Edition (January 1998) Changes and enhancements to the product and to the information herein will be documented and issued as a new release. FCC Registration number: AW2USA-61422-DD-N Bell Canada — Meets Bell Canada Metallic Specs Warranty, Sales, and Service Information Contact your sales or service representative directly for any help needed.
Safety Instructions Important Safety Instructions 1. Read and follow all warning notices and instructions marked on the product or included in the manual. 2. This product is intended to be used with a three-wire grounding type plug – a plug which has a grounding pin. This is a safety feature. Equipment grounding is vital to ensure safe operation. Do not defeat the purpose of the grounding type plug by modifying the plug or using an adaptor.
COMSPHERE 3500 Series Data Service Units Notices
Safety Instructions Government Requirements The Federal Communications Commission (FCC) requires that instructions pertaining to connection to the telephone network be included in the installation and operation manual. Specific instructions are listed in this section. Notice to Users of the Digital Data Service This equipment complies with Part 68 of the FCC rules. On the bottom of the equipment is a label that contains, among other information, the FCC registration number for this equipment.
Table of Contents Preface Objectives And Reader Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . Contents Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reference Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v v v v 1. Introduction Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE 3500 Series Data Service Units 4. Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Important Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Local Area Data Set (LADS) Operation . . . . . . . .
Table of Contents List of Figures Figure Page 1-1 1-2 2-1 2-2 2-3 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 4-1 4-2 4-3 4-4 4-5 1-1 1-2 2-2 2-4 2-4 3-2 3-5 3-6 3-8 3-10 3-12 3-14 3-15 3-16 3-17 4-4 4-6 4-7 4-8 4-6 4-7 4-8 4-9 4-10 4-11 4-12 4-13 4-14 A-1 A-2 A-3 B-1 3510-A2-GN32-50 Model 3510 DSU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3511 DSU and Rear Connector Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE 3500 Series Data Service Units List of Tables Table 1-1 2-1 3-1 3-2 3-3 3-4 3-5 3-6 4-1 4-2 4-3 4-4 4-5 4-6 A-1 A-2 A-3 A-4 A-5 A-6 iv Page Technical Specifications for Model 3510 and Model 3511 DSUs . . . . . . . . . . . . . . . DSU Compatibilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3500 Series Indicators and Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Device Test Procedure . . . . . . . . .
Preface Objectives and Reader Assumptions Related Documents Call your sales representative for additional product documentation. This manual contains information for the installation and operation of the Model 3510 (standalone) and Model 3511 (carrier-mounted) Data Service Units (DSUs). 3000-A2-GA31 This manual assumes that you are familiar with the functional operation of digital data equipment, DDS, DSUs and your DTE devices.
Introduction Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equipment Warranty and Support . .
COMSPHERE 3500 Series Data Service Units Both the Model 3510 and Model 3511 DSUs are compatible with earlier DATAPHONE II 2500 Series and 2600 Series DSUs, and they incorporate a number of enhancements. Model 3510 supersedes the 2556B, 2596B, 2656B, and 2696B DSUs. Model 3511 supersedes the 2556A and 2596A DSUs. You can obtain compact standalone Model 3510 DSUs for desktop installation or circuit card Model 3511 DSUs for carrier-mounted installation (up to 16 units) in a COMSPHERE 3000 Series Carrier.
Introduction • Synchronous data transmission capability. Features • Local, digital and remote loopbacks, plus built-in test pattern generator/checker. The Model 3510 and Model 3511 DSUs contain the following standard features: • Both models provide streaming terminal fault, out-of-service, and no signal indication capability. • Switch-selectable data rates of 2400, 4800, 9600, 19,200, 38,400, 56,000, and 64,000 bps.
COMSPHERE 3500 Series Data Service Units Technical Specifications Table 1-1 lists the technical specifications for Model 3510 and Model 3511 DSUs.
Introduction Table 1-1 (2 of 2) Technical Specifications for Model 3510 and Model 3511 DSUs Technical Specifications PHYSICAL DIMENSIONS Model 3510 Height Width Depth Weight Model 3511 Height Width Depth Weight Rear Connector Plate Height Width Depth Weight DTE INTERFACES Criteria 2.13 inches (5.4 cm) 7.60 inches (19.3 cm) 12.13 inches (30.8 cm) 2.60 pounds (1.2 kg) 7.13 inches (18.1 cm) 1.00 inches (2.5 cm) 13.40 inches (34 cm) 0.73 pounds (0.3 kg) 5.25 inches (13.3 cm) 0.88 inches (2.2 cm) 1.
COMSPHERE 3500 Series Data Service Units Equipment Warranty and Support Contact your sales or service representative directly for any help needed. For additional information concerning warranty, sales, service, repair, installation, documentation or training, use one of the following methods: • Via the Internet: Visit the Paradyne World Wide Web site at http://www.paradyne.com • Via Telephone: Call our automated call system to receive current information via fax or to speak with a company representative.
Principles of Operation Network Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Point-to-Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Multipoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DSU Compatibility . . . . . . . . . . .
COMSPHERE 3500 Series Data Service Units Figure 2-1.
Principles of Operation DSU Compatibility For primary channel communication, the standalone Model 3510 and the carrier-mounted Model 3511 DSUs are fully compatible with all Paradyne digital products that operate at the same speed and power level. Point-to-point and multipoint configurations are not limited to connections between 3500 Series DSUs; many other combinations of equipment are possible.
COMSPHERE 3500 Series Data Service Units 2600 Series Compatibility 3500 Series DSUs have no network management capabilities except when they are used as tributaries in DATAPHONE 2600 Series networks.
Operation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3510 Faceplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3511 Faceplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Faceplate Operation . . . . . . . . . . . . . .
COMSPHERE 3500 Series Data Service Units OK 3510 OS/NS TEST REM PASS FAIL/STR/DSBL TP LL DL RL TXD RXD RTS CTS DSR LSD 103 104 105 106 107 109 2.4/4.8 19.2/38.4 9.6 SPEED 56/64 496-12301-01 Figure 3-1. Model 3510 Faceplate Table 3-1 (1 of 3) 3500 Series Indicators and Switches Definition Name OK OS/NS Function Normal Operation This green indicator lights when the DSU is connected to the digital network or LADS and is operating normally.
Operation Table 3-1 (2 of 3) 3500 Series Indicators and Switches Name Definition Function PASS Pass This green indicator lights if the DSU has completed a device test without a failure. The indicator remains on until another key is pressed. FAIL/STR/DSBL (3510) Failure/Error/Streaming/Disable This red indicator performs four functions: FAIL/Dsbl (3510/3511) – Indicator lights at the end of a Device Test if the test was not successful. The indicator remains ON until another key is pressed.
COMSPHERE 3500 Series Data Service Units Table 3-1 (3 of 3) 3500 Series Indicators and Switches Name Definition Function RTS (105) 2 Request-to-Send This green indicator lights when the DTE places a positive voltage on the RTS input. 3 CTS (106) 2 Clear-to-Send This green indicator lights when the DSU places a positive voltage on the CTS lead. 3 DSR (107) 2 Data Set Ready This green indicator lights when the DSU places a positive voltage on the DSR lead.
Operation Model 3511 Faceplate Faceplate Operation Figure 3-2 shows the Model 3511 faceplate. Indicators and pushbutton switches for this DSU are listed and described in Table 3-1. Table 3-1 provides operation descriptions for the eight DSU status indicators, the four pairs of test switches and test indicators, and the six DTE interface indicators for both the 3510 and 3511 DSUs.
COMSPHERE 3500 Series Data Service Units Device Test Device Test Overview DSU transmitter where it is looped back to the receiver (Figure 3-3). The receiver then passes the test message it receives to the comparator. The comparator checks the received message for errors. Errors cause the faceplate Dsbl/Fail (3511) or FAIL/STR/DSBL (3510) indicator to flash. At the conclusion of the test, the PASS or FAIL indicator lights. This 30-second test uses a test pattern generator built into the DSU.
Operation Device Test Procedures Device Test Results Follow the procedure in Table 3-2 for a Device Test. The DTE and network cables are not required to be connected to the DSU to do this test. However, the DSU must be powered. If, at the conclusion of the Device Test, the PASS indicator is lit, then the DSU has passed the test and has a very high probability of not being the source of trouble. If the FAIL indicator is lit, the DSU has failed the Device Test and should be replaced.
COMSPHERE 3500 Series Data Service Units Digital Test (Point-to-Point) Digital Test is a data disruptive test used to determine if both DSUs and the DDS (Digital Data Service) network between the DSUs are functioning properly (Figure 3-4). Point-to-Point Digital Test Overview After the remote DSU is put in Digital Loopback, this test uses a test pattern generator that is built into the local DSU. The generator sends a test message over the network to a remote DSU where it is looped back (Figure 3-4).
Operation Point-to-Point Digital Test Procedures Point-to-Point Digital Test Results Follow the procedure in Table 3-3 to perform a Digital Test (Point-to-Point). If the FAIL indicator remained Off for the entire test interval, the Digital Test has passed and no problems have been detected in either the DSUs or the network. If the FAIL indicator flashed sporadically, you may have experienced network-related data errors.
COMSPHERE 3500 Series Data Service Units Digital Test (Multipoint) Digital Test is a data disruptive test used to determine if the control DSU, one selected tributary DSU, and the multipoint network between these two DSUs are functioning properly. This test requires a person at each end, and the tester should be sure that no other tributary will originate a transmission during the test, as this will invalidate the test.
Operation Multipoint Digital Test Procedures Multipoint Digital Test Results Follow the procedure in Table 3-4 to perform a Digital Test (Multipoint). If the FAIL indicator remained Off for the entire test interval, the Digital Test has passed and no problems have been detected in either the DSUs or the network. If the FAIL indicator has flashed sporadically, you may have experienced network-related data errors.
COMSPHERE 3500 Series Data Service Units Local Loopback – DTE Test Message To start the loopback, press the LL test switch; the DTE sends the test message. To return the DSU to normal after the loopback result is determined, press the LL test switch. The Local Loopback is a data disruptive test used to determine the proper functioning of the DTE to DSU connection. Local Loopback Procedures Local Loopback Overview This loopback uses a test message provided by your DTE.
Operation Table 3-5 Local Loopback – DTE Test Message Procedure Your Action DSU Front Panel Response 1. Press the LL test switch. LL indicator lights, TEST indicator flashes. After about 6 seconds, TEST indicator remains ON. 2. Operate your DTE to send test message. TXD and RXD indicators show interface lead status while test message is transmitted. 3. Press the LL test switch. LL indicator goes Off. TEST flashes for about 6 seconds, then goes Off.
COMSPHERE 3500 Series Data Service Units Channel Loopback Troubleshooting The Model 3510 and 3511 DSUs perform a Channel Loopback test whenever they detect reversal of the sealing current in the local loop. In addition, these DSUs connected to subrate or 56 kbps DDS local loops respond to network loopback bipolar violation sequences by performing a channel loopback, returning incoming data to its source via the digital network (shown in Figure 3-7).
Operation Figure 3-8.
COMSPHERE 3500 Series Data Service Units Figure 3-9.
Operation Figure 3-10.
COMSPHERE 3500 Series Data Service Units 2600 Series DSU Emulation Other Tributary DSUs – Test Mode Several tests are available to an network management system (NMS) user to investigate trouble conditions on a circuit with 2600 DSUs.
Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3510 DSUs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3511 DSUs . . . . . . . . . . . . . . .
COMSPHERE 3500 Series Data Service Units Model 3511 DSUs Important Safety Instructions The Model 3511 DSU is designed for installation in a COMSPHERE 3000 Series Carrier, which supplies operating power and provides interfaces for connecting to the digital network. Up to 16 DSUs can be installed in a COMSPHERE 3000 Series Carrier. For installation of the carrier, refer to the COMSPHERE 3000 Series Carrier, Installation Manual.
Installation Installation Procedures 3. Find a suitable non-switched ac wall outlet capable of furnishing 90 to 132 Vac, 0.07 amps at 117 Vac. Label the circuit breaker that controls the outlet and be sure it is set to ON. This section provides instructions for installing standalone Model 3510 DSUs and carrier-mounted Model 3511 DSUs. Refer to the appropriate section. Model 3510 DSUs Physical installation of the Model 3510 consists of unpacking the DSU and placing it in its planned location.
COMSPHERE 3500 Series Data Service Units 6. Connect the network interface. Refer to the Notice to Users of the Digital Data Service (page D at the beginning of this manual) to ensure compliance with FCC or Bell Canada rules, and for information required to obtain the desired service from the telephone company. To configure the DSU to use the V.35 interface, set Switch S3-6 on the CCA toward the rear (R) during configuration. Refer to the Hardware Strapping section for additional information.
Installation Removing and Replacing a Model 3510 DSU Model 3511 DSUs To remove and replace the DSU: . Procedure 1. Disconnect the power cord – first from the outlet, then from the connector at the rear of the DSU. This section includes the installation procedures for the Model 3511 DSU, which is designed for installation in a COMSPHERE 3000 Series Carrier (Figure 4-2). These procedures assume that the carrier has been installed properly and is operational. 2.
COMSPHERE 3500 Series Data Service Units 496-12291-04 Figure 4-2.
Installation Installing the Rear Connector Plate 3. Loosely fasten the screw attached to the rear connector plate, allowing for slight adjustment that may be needed when installing the DSU. To install a DSU and its rear connector plate for the first time: . Procedure 1. Configure the DSU to meet the requirements of the application (refer to the Hardware Strapping section). Do not disable the front panel switches at this time. 2.
COMSPHERE 3500 Series Data Service Units Figure 4-4. Model 3511 DSU Installation and Circuit Pack Lock 6. Aligning the circuit card with the rear connector plate, slide the DSU into the slot until the connectors seat firmly into the back of the carrier. 8. Return to the rear of the carrier and tighten the rear connector plate screw. 9. At the rear of the carrier, connect the DTE interface cable onto the rear connector plate (see Figure 4-3). 7.
Installation Connecting to a V.35 Interface NOTE To connect the V.35 interface cable: . Procedure 1. Connect the 25-pin end of the V.35 interconnect cable to the bottom DTE connector on the rear connector plate (refer to Figure 4-5). Use a small screwdriver to tighten the screws on both sides of the connector. 2. Connect the 34-pin end of the V.35 interconnect cable to the DTE’s V.35 interface cable. Tighten the screws on both sides of the connector. For the V.
COMSPHERE 3500 Series Data Service Units Connecting to the Digital Network 3. Aligning the circuit card with the rear connector plate, slide the DSU into the slot until the connectors seat firmly into the back of the carrier. The installed DSU is connected to the digital network through the 50-pin connectors on the rear of the carrier. These interfaces are specified in USOC RJ48T (pin assignments are shown in Appendix A).
Installation Local Area Data Set (LADS) Operation Hardware Strapping Both Model 3510 and 3511 DSUs can be configured for installation at the local or remote end of a network by setting onboard straps. The straps also allow you to configure either type of DSU (Model 3510 or 3511) as a LADS for connection to 4-wire metallic circuits. You can connect 3500 Series DSUs to a 4-wire, non-loaded metallic circuit that functions as a point-to-point LADS.
COMSPHERE 3500 Series Data Service Units For the Model 3510 DSU, the straps are concealed behind the faceplate as shown in Figure 4-6. 2. Swing the front bezel up and set the bezel aside. To remove the faceplate to change the hardware straps: . Procedure 1. With your thumbs under the edge of the front bezel, firmly press upward to lift the bezel from the tabs securing it in place. 3. Refer to the tables included in this section to determine which switches need to be changed.
Installation Figure 4-7 shows the physical location of the straps on a Model 3511 DSU. The straps are not concealed, as they are on the Model 3510 DSU, and should be set before the DSU is installed in a COMSPHERE 3000 Series Carrier. Factory strap settings for both the 3510 and 3511 DSUs are shown in Figure 4-8 and described in Figures 4-9 through 4-14. The straps for both models are listed and described in Tables 4-3 through 4-5.
COMSPHERE 3500 Series Data Service Units Figure 4-8.
Installation Figure 4-9.
COMSPHERE 3500 Series Data Service Units Figure 4-10. Timing Signal Source Selection (Switch S1) Figure 4-11.
Installation Figure 4-12. S2 Default Settings, Model 3510 and Model 3511 Figure 4-13.
COMSPHERE 3500 Series Data Service Units Figure 4-14.
Installation Table 4-3 (2 of 3) Model 3510 and Model 3511 DSU Straps S1 through S5 Function 1 Switch Selection Position S2–1 — S2–2 — S2–3 — S2–4 — S2–5 R F Disables streaming terminal function Enables streaming terminal function S2–6 R F Disables system status function Enables system status function S3–1 F R Disables faceplate switches Enables faceplate switches S3–2 F R Enables continuous control of RTS lead Enables switched control of RTS lead S3–3 F R Disables control of LL tes
COMSPHERE 3500 Series Data Service Units Table 4-3 (3 of 3) Model 3510 and Model 3511 DSU Straps S1 through S5 Function 1 Switch Selection Position S5–1 F R Provides separate signal and frame grounds (Model 3510 only) Connects signal ground to frame ground* (Model 3510 only) S5–2 F R Disables test mode indication Enables test mode indication on Pin 25 of EIA-232-D interface S5–3 F R Disables test mode indication Enables test mode indication on Pin NN of V.
Installation Table 4-5 Data Rate Selection for Both Model 3510 and Model 3511 S2–1 S2–2 S2–3 S2–4 F R R R 2400 bps (+6 dBm) F R F R 4800 bps (+6 dBm) F R R F 9600 bps (0 dBm) R R R R 19,200 bps (–10 dBm) R F R R 19,200 bps (0 dBm) F R F F 19,200 bps (+6 dBm) R R F R 38,400 bps (+6 dBm) R R F F 56,000 bps (+6 dBm) R F R F 64,000 bps CC (+6 dBm) R R R F 64,000 bps LADS (+6 dBm) Data Rate (Signal Level) F = Front R = Rear NOTE: Other data rate combination
COMSPHERE 3500 Series Data Service Units Table 4-6 (2 of 4) Model 3510 DSU S4 Selection 1 2 3 4 5 6 11 R R F R F F 12 R R F F R R 13 R R F F R F 14 R R F F F R 15 R R F F F F 16 R F R R R R 17 R F R R R F 18 R F R R F R 19 R F R R F F 20 R F R F R R 21 R F R F R F 22 R F R F F R 23 R F R F F F 24 R F F R R R 25 R F F R R F 26 R F F R F R 27 R F F R F F 28 R F F F R R 29 R F
Installation Table 4-6 (3 of 4) Model 3510 DSU S4 Selection Switch S4 Selection Network Address 1 2 3 4 5 6 36 F R R F R R 37 F R R F R F 38 F R R F F R 39 F R R F F F 40 F R F R R R 41 F R F R R F 42 F R F R F R 43 F R F R F F 44 F R F F R R 45 F R F F R F 46 F R F F F R 47 F R F F F F 48 F F R R R R 49 F F R R R F 50 F F R R F R 51 F F R F R R 52 F F R F R R 53 F F R F R F
COMSPHERE 3500 Series Data Service Units Table 4-6 (4 of 4) Model 3510 DSU S4 Selection Switch S4 Selection Network Address 1 2 3 4 5 6 61 F F F F R F 62 F F F F F R 63 F F F F F R 64 1 R R R R R R F = Front R = Rear FACTORY DEFAULT SETTING (Broadcast Address) 1 DSU Strap Setting Descriptions The following information provides DSU strap setting descriptions. S1-1 and S1-2: Timing – The DSU comes from the factory with digital data system (DDS) timing selected.
Installation S2-1–S2-4: Data Rate – The DSU has ten data rate selections. Refer to Table 4-5. S2-5: Streaming – This strap is provided at a tributary DSU to detect when the terminal is streaming (that is, the RTS circuit from the DTE remains on longer than the streaming terminal timer). This selection is only effective when the DSU is strapped for switched RTS operation. Streaming detection will not be performed if the DSU is in a test condition.
COMSPHERE 3500 Series Data Service Units S5-6: Diagnostic Message Clamping – If this strap is enabled, the tributary DSU will clamp received data to MARK and received line signal detect to Off whenever 2600 or 3500 Series diagnostic test/command messages are received. These messages are detected at a tributary DSU by the presence of Control Mode Idle signals. The clamping prevents diagnostic messages from reaching the customer DTE interface.
Connector Pins A Digital Network Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 EIA-232-D/V.24 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3 V.35 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMSPHERE 3500 Series Data Service Units Table A-2 RJ48T Digital Network Connector Pins (50-Pin) for the COMSPHERE 3000 Series Carrier (Model 3511) Pin Receive Circuits Slot 1 or 9 2 or 10 3 or 11 4 or 12 5 or 13 6 or 14 7 or 15 8 or 16 Transmit Circuits T R T1 R1 26 28 30 32 34 36 38 40 1 3 5 7 9 11 13 15 27 29 31 33 35 37 39 41 2 4 6 8 10 12 14 16 Table A-3 Standalone (Model 3510) Canadian Adapter Cable Pins RJ48S A-2 RJ11 Pin Circuit Name Pin Circuit Name 1 2 3 4 5 6 7 8 R1 T1 Not us
EIA-232-D/V.24 Connector V.35 Connector The Model 3510 DSU’s rear panel and the Model 3511 DSU’s rear connector plate includes a 25-pin EIA-232-D/V.24 connector for connection to the DTE. Pin assignments are listed and described in Table A-4. The Model 3510 DSU’s rear panel includes a standard 34-Pin V.35 connector. Table A-5 identifies the 34-pin V.35 interface pin assignments. The Model 3511 DSU is shipped with a rear connector plate, which is mounted onto the rear of the 3000 Series Carrier.
COMSPHERE 3500 Series Data Service Units Table A-5 Model 3510 DSU 34-Pin V.35 Connector Pins Pins V.
Figure A-3. V.35 Interconnect Cable (Feature Number 3000-F1-510) Table A-6 Model 3511 DSU 25-Pin CCITT V.35 Connector Pins 25-Pin Connector on Rear Connector Plate 34-Pin Connector on V.
Timing During Testing In some test modes, the timing source for the DSU changes when the DSU is configured for a timing source other than DDS. The following charts (Figure B-1) show the DSU’s timing for each step of the following tests: B For each test, find the appropriate timing column down through the steps in the test to determine the source of timing changes.
COMSPHERE 3500 Series Data Service Units Figure B-1.
Figure B-1.
Equipment List Equipment C Feature Number COMCODE Model 3510 DSU in housing 3510-A1-001 106238546 Model 3511 DSU circuit card (includes Rear Connector Plate) 3511-B1-002 106476245 Rear Connector Plate – 25-Pin EIA-232/25-Pin CCITT V.35 3000-F1-021 106476229 V.
COMSPHERE 3500 Series Data Service Units The following is for Field Service personnel. Part Number Equipment Standalone (Model 3510 DSU) CCA 870-1576-8xxx Carrier-mounted (Model 3511 DSU) – modular CCA 870-1631-8xxx Rear Connector Plate – 25-Pin EIA-232/25-Pin CCITT V.35 315-0023-0131 AC Power Cord (included with Model 3510) 125-0007-0031 V.
Glossary carrier A 19- or 23-inch rack that supports single and multiport configurations and accommodates up to 16 DSUs. Clear-to-Send (CTS) A signal issued by a DSU to indicate that it is connected to the digital network and is ready to accept data. Consultive Committee for International Telegraphy and Telephony (CCITT) The international telecommunications standards organization. control A data service unit (DSU) that is generally collocated with the host computer.
COMSPHERE 3500 Series Data Service Units Line Signal Detect (LSD) A signal issued by the DSU that indicates that it is connected to a functional digital network. Local Area Data Set (LADS) A mode of operation where the control and tributary DSUs are directly connected via 4-wire, non-loaded metallic pairs rather than via a digital (DDS) network; they do not pass data through a DDS network.
Index configurations multipoint, 2-1 network, example, 2-2 network, 2-1 point-to-point, 2-1 network, example, 2-2 connection digital network, 4-10 LADS, 4-11 V.35 interface, 4-9 connectivity, local area data set (LADS), 2-4 connector digital network, A-1 EIA-232-D, A-3 pins, A-1 V.35, A-3 connector pins Canadian adapter cable, A-2 EIA-232-D, A-3 rear connector plate to V.35, A-5 RJ48S, A-1 RJ48T, A-2 V.
COMSPHERE 3500 Series Data Service Units descriptions S1, 4-24 S2, 4-25 S3, 4-25 S4, 4-25 S5, 4-25 strap settings, 4-24 Device Test, 3-6, B-1 diagram, 3-6 procedures, 3-7 results, 3-7 diagnostic message clamping, S5 description, 4-26 test, 3-5 diagram Channel Loopback, 3-14 Device Test, 3-6 Digital Test multipoint, 3-10 point-to-point, 3-8 Local Loopback, 3-12 Digital Loopback, B-1 (remote), S1 description, 4-24 digital network connection, 4-10 connectors, A-1 interface (RJ48T), pin assignments (Model 3511
I M indicators, faceplate, 3-2 installation, 4-1 alarm output, 4-26 digital network, 4-10 Model 3510 DSU, 4-1 Model 3511 DSU, 4-2 planning, 4-1 procedure, 4-3 Model 3510 DSU, 4-3 Model 3511, 4-10 Model 3511 DSU, 4-5 rear connector plate, 4-7 V.
COMSPHERE 3500 Series Data Service Units P S part number, C-2 PASS indicator, 3-3 physical dimensions, 1-5 planning, installation, 4-1 point-to-point, Digital Test, 3-8 procedure, 3-9 test results, 3-9 point-to-point configurations, 2-1 power requirements, 1-4 precautions for static-sensitive devices, 4-2 principles of operation, 2-1 procedure alternative, Local Loopback, 3-13 Device Test, 3-7 Digital Test multipoint, 3-11 point-to-point, 3-9 Local Loopback, 3-13 procedures digital network connection, 4-1
T U technical specifications, 1-4 temperature, 1-4 Test Device, 3-6 Digital multipoint, 3-10 point-to-point, 3-8 test commands, 3-18 mode indication EIA-232-D interface, S5 description, 4-25 V.
