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The following conventions are used in this manual. Notes provide additional useful information. Cautions signify information that could prevent service interruption. Warnings provide information that could prevent damage to the equip- ment or endangerment to human life. Important Safety Instructions When using your telephone equipment, please follow these basic safety precautions to reduce the risk of fire, electrical shock, or personal injury: Do not use this product near water, such as near a bathtub, wash bowl, kitchen...
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Federal Communications Commission Radio Frequency Interference Statement This equipment has been tested and found to comply with the limits for a Class A dig- ital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
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(including, but not limited to, loss of data or information, loss of profits, or loss of use). ADTRAN is not liable for damages for any cause whatso- ever (whether based in contract, tort, or otherwise) in excess of the amount paid for the item.
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Customer Service, Product Support Information, and Training ADTRAN will replace or repair this product within five years from the date of ship- ment if the product does not meet its published specification, or if it fails while in ser- vice.
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The Enterprise Network (EN) Technical Training Department offers training on our most popular products. These courses include overviews on product features and func- tions while covering applications of ADTRAN's product lines. ADTRAN provides a va- riety of training options, including customized training and courses taught at our facilities or at your site.
DC Terminal Block......................2-5 DTE Ports 2-4 (Expansion Slots) ................. 2-5 DTE Port 1 (HSSI Interface) ..................2-6 Alarm Connector......................2-6 LAN Port ........................2-6 Optical Interface Port....................2-7 Single-Mode ......................2-7 Multi-Mode ......................2-7 61200663L1-1 OSU 300 User Manual...
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Powering the Unit ....................... 2-8 Reviewing the Front Panel ....................2-9 Control Port........................2-9 VT-100 Terminal Connection ................2-9 Navigating Within the Menus ................2-11 OSU 300 Main Menus ..................2-11 Status ......................2-11 Statistics ......................2-11 Configuration ....................2-11 Diagnostics ....................2-11 Remote Login ....................
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LC (loopback circuit C) ................. 4-6 TM (test mode) ....................4-6 V.35 Interface Leads ..................... 4-7 RS ........................4-7 CS ........................4-7 CD ........................4-7 TR ........................4-7 SR ........................4-7 LL ........................4-7 RL ........................4-7 TM ........................4-7 61200663L1-1 OSU 300 User Manual...
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Pattern ........................6-12 Invert Pattern ....................... 6-13 BERT Information Fields ..................6-13 Port ......................... 6-13 Direction ......................6-13 State ........................ 6-13 Errors ......................6-14 Current Err/Sec .................... 6-14 Insert Error ......................6-14 Clear Errors ......................6-14 OSU 300 User Manual 61200663L1-1...
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Fractional T3 Carrier Application ..................7-4 Remote SNMP Management Application ............... 7-6 Voice Application ........................ 7-7 Appendix A. Pinouts ....................... A-1 Appendix B. Specifications Summary ................B-1 Appendix C. Acronyms/Abbreviations................ C-1 Appendix D. Glossary ..................... D-1 Index ........................... Index-1 61200663L1-1 OSU 300 User Manual xiii...
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Table of Contents OSU 300 User Manual 61200663L1-1...
List of Figures Figure 2-1. OSU 300 Rear Panel Description ..............2-4 Figure 2-2. Moving the Optical Interface Door .............. 2-4 Figure 2-3. DC Power Connector ..................2-5 Figure 2-4. OSU 300 Front Panel ..................2-9 Figure 2-5. OSU 300 Main Menu ..................2-10 Figure 3-1.
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Figure 6-18. BERT Pattern Menu ..................6-13 Figure 7-1. Single Port Application .................. 7-1 Figure 7-2. Multiport Application ..................7-3 Figure 7-3. Fractional Application..................7-5 Figure 7-4. Remote Management Application ............... 7-6 Figure 7-5. Voice Application.................... 7-7 OSU 300 User Manual 61200663L1-1...
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Fractional T3 Application Configuration Example ........7-5 Table 7-4. Configuration Example for Remote SNMP Management Application .. 7-6 Table 7-5. Local OSU 300 ....................7-6 Table 7-6. Configuration Example for a Voice Application ........7-7 Table A-1. Control Port Pin Assignments ..............A-1 Table A-2.
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List of Tables xviii OSU 300 User Manual 61200663L1-1...
The OSU 300 contains a built-in HSSI (high speed serial interface) port and three expansion slots which accept additional HSSI, V.35, or Quad DSX-1 interface cards. The HSSI interfaces support rates between 75 kbps and 44.2 Mbps in 75-kbps increments.
SNMP, Telnet, or a VT-100 terminal interface. This connection can be made via Ethernet or a local EIA-232 link. The OSU 300 is designed for either desktop use or for installation in a 19-inch rack. The major features of the OSU 300 are as follows: •...
(AUX) control port or the 10BaseT local area network (LAN) port. The OSU 300 supports the MIB-II standard, RFC 1213 and 1407, and the ADTRAN Enterprise Specific MIB. The term SNMP broadly refers to the message protocols used to...
TELNET Telnet provides a password-protected, remote login facility to the OSU 300 that allows a remote user to control the OSU 300 through the terminal menus. Only one Telnet session may be active at a time.
Quad DSX-1 Card The optional Quad DSX-1 interface card plugs into the card slots on the rear of the OSU 300. This card allows you to transport up to four DSX-1 lines per card over the DS3 interface of the OSU 300 along with high-speed data from the other HSSI/V.35 ports.
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Chapter 1. Introduction OSU 300 User Manual 61200663L1-1...
Installation and Operation Chapter 2 RECEIVING INSPECTION Carefully inspect the OSU 300 for any damage that may have occurred in shipment. If damage is suspected, file a claim immediately with the carrier and contact ADTRAN Technical Support (see the last page of this manual). Keep the original shipping container to use for future shipment or verification of damage during shipment.
Chapter 2. Installation and Operation INSTALLING THE UNIT The OSU 300 can be used as a desktop stand-alone device or mounted into a standard 19-inch equipment rack. See the section VT-100 Terminal Connection on page 2-9 for information on terminal configuration.
Pin assignments for the connectors are given in Appendix A. Figure 2-1 on page 2-4 shows the OSU 300 rear panel, and Figure 2-2 on page 2-4 shows the movement of the optical interface door.
Optical Interface DS3 service connection. Removable Dust Protects unit from dust. Remove to use the Optical Cover Interface. Figure 2-1. OSU 300 Rear Panel Description Slide this door up and down Laser Radiation Avoid Exposure to Beam to access the...
(usually -48V). Figure 2-3. DC Power Connector DTE Ports 2-4 (Expansion Slots) The OSU 300 rear panel contains three expansion slots (DTE ports 2-4) for installing optional interface cards. Currently available cards include the HSSI card (P/N 1200218L1), the V.35 card (P/N 1200219L1), and the Quad DSX-1 card (P/N 1200284L1).
The alarm connector is a three-position, screw-type terminal block that connects to the three contacts of a Form C-type relay on the main board of the OSU 300. This relay activates any time the OSU 300 detects an alarm condition on the high-speed network interface.
Chapter 2. Installation and Operation Optical Interface Port The OSU 300 optical interface port consists of a single-mode or multi-mode transceiver module composed of a transmitter, a receiver, and an SC or ST receptacle. The optical interface port supports angled SC type optical connectors (61200663L1 and L2 only) and operates in the 1280 nm to 1335 nm wavelength range (1310 nm nominal).
Chapter 2. Installation and Operation The OSU 300 comes with a removable process plug that covers the optical interface. A mechanical door engages when the fiber cable is removed from the optical interface (see also, Figure 2-2 on page 2-4). This door protects the unit from dust in the event of the optical interface being disconnected, and it provides additional protection for the human eye from the laser beam.
Chapter 2. Installation and Operation REVIEWING THE FRONT PANEL Figure 2-4 illustrates the OSU 300 front panel. Descriptions of each front panel item follow Figure 2-4. OSU 300 CONTROL REMOTE STATUS STATUS STATUS IN SERVICE STATUS ACTIVE IN TEST IN TEST...
Press repeatedly until the password prompt appears. Enter Enter the password. The factory default password is adtran (all lower-case). The M menu appears (see Figure 2-5). Make selections by entering the number corresponding to the chosen parameter. Press to return to the previous screen.
Chapter 2. Installation and Operation Navigating Within the Menus Navigate within the OSU 300 terminal menus using the following procedures: If you want to... Press... select an item the number corresponding to your choice, and then press the Enter key.
Remote Active LED A solid LED indicates a remote configuration session is taking place through a Telnet session or from the remote end OSU 300. The LED flashes when the unit is being accessed locally through the front panel port.
In Test This LED indicates the DTE interface is performing a BERT test. This LED indicates the OSU 300 DTE port is transmitting data. This LED indicates the OSU 300 DTE port is receiving data. 61200663L1-1 OSU 300 User Manual...
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Chapter 2. Installation and Operation 2-14 OSU 300 User Manual 61200663L1-1...
Configuration Chapter 3 The OSU 300 can be configured locally and remotely. Local configuration is accomplished through a 10BaseT Ethernet connection, a SLIP/PPP port, or a VT-100 terminal. Remote configuration can take place through the T3 data link using a local OSU 300.
Chapter 3. Configuration DS3 NETWORK To access the network configuration parameters, select 1- DS3 . Configure the OSU 300 network settings to match the T3 ETWORK signal received from the service provider. During remote configuration, this menu is read-only. The DS3 N ETWORK menu is shown in Figure 3-2.
Configuration selections for the individual ports are described in the following section. A more in-depth description of T IMED is on page 3-10. ROFILES Figure 3-3. DTE Ports Menu 61200663L1-1 OSU 300 User Manual...
Table 3-2 on page 3-6 lists menu fields available only for V.35 interfaces. • Table 3-3 on page 3-8 lists the menu fields available for Quad DSX-1 interfaces. Figure 3-4. Port Configuration Menus for V.35 and HSSI Interface Cards OSU 300 User Manual 61200663L1-1...
Mbps). Changes to this field do not take effect until PPLY ETTINGS is selected. This read-only status field shows the amount of bandwidth that will be ANDWIDTH available if the selection made in the field is applied. LOCKS 61200663L1-1 OSU 300 User Manual...
Select this field after making all configuration changes for the selected PPLY ETTINGS port. The changes are then applied to the unit immediately. Applying the settings briefly affects all ports of the OSU 300. You may cancel changes made to the current menu by pressing ONFIGURATION the ESC key.
Chapter 3. Configuration Table 3-2. Additional V.35 Interface Port Configuration Selections (Continued) ELECTION ESCRIPTION The SR lead remains on except when the OSU 300 is executing a test. The SR lead remains on except when the unit receives an OOS/OOF OOS/OOF condition from the network or when the unit is executing a test.
NSTALLED 1 interface. Displays the amount of bandwidth (in 75k increments) not already NALLOCATED allocated to any of the OSU 300 DTE ports. LOCKS If an individual DSX-1 interface is installed but not currently in use, set TATE . Set to to activate a port.
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STUFFING Set the line length for each DSX-1 interface according to the distance ENGTH from the OSU 300 to your DTE device. Set to 7.5 dB if the attached DTE device only supports DS-1 levels. DSX-1 T For each Quad DSX-1 card pair (the near-end and far-end Quad IMING DSX-1 cards), there must be only one source of timing.
For example, you can assign more bandwidth to the corporate LAN during business hours and more bandwidth to a backup machine in the evenings. The OSU 300 can store two separate user profiles which have bandwidth selections for each of the four ports.
(see Figure 3-8 on page 3-12) YSTEM ANAGEMENT allow you to configure the OSU 300 for management through SNMP, Telnet, or a VT-100 interface. Embedded SNMP and Telnet are available through either a SLIP/PPP or a 10BaseT Ethernet port.
Chapter 3. Configuration Figure 3-8. System Management Configuration Menu Local IP Address Enter the OSU 300 IP address. This IP address applies to the Ethernet or auxiliary port (when configured for PPP or SLIP). This address is available from the network administrator.
Enter the authentication strings used for SNMP management. Match the OSU 300 to the SNMP manager for trap privileges. Trap IP Addresses Enter up to five SNMP manager IP addresses to which the OSU 300 sends traps. Trap Generation This field determines which trap types (if any) are generated by the unit (see Figure 3-9).
FEAC channel of a service-affecting failure in the network equipment. Com. Eqpt. Fail when the unit receives indication from the network through the FEAC channel of a non-service-affecting failure in the network common equipment. 3-14 OSU 300 User Manual 61200663L1-1...
THIS TRAP IS SENT QDSX Alarms when any of the DSX-1 ports detects an error condition. Toggle All Traps When activated, this entry allows you to toggle ALL alarms (previously described) between their disabled and enabled states. 61200663L1-1 OSU 300 User Manual 3-15...
Chapter 3. Configuration Password Set the password required at login (up to 32 characters). The default password is adtran (all lower case). Terminal Timeout Set the amount of time the terminal or Telnet session can remain inactive before requiring re-entry of the password for access. This...
If enabled, the alarm circuit is activated when a network alarm occurs. UTILITIES The U menu allows you to view OSU 300 system TILITIES information (including self-test results), revert to default configuration settings, or flash load a new version of software. The...
TEST RESULTS ARE PASS the self-test was successful and the unit is ready to use. BAD RAM DATA contact ADTRAN Technical Support. See Customer Service, Product Support Information, and Training in BAD RAM ADDRESS the front section of this manual. BAD CHECKSUM...
Chapter 4 View port status information by selecting 1-S from the M TATUS menu. Information for the network port and the DTE ports is provided. Figure 4-1 shows the S menu. TATUS Figure 4-1. Status Menu 61200663L1-1 OSU 300 User Manual...
The unit is currently in test mode. The menu provides IAGNOSTICS information on test type. NETWORK: ALARM This field displays the current alarm condition of the OSU 300. Possible conditions are given in the following chart. Condition Description Normal No alarms are currently being received.
The network has signaled a non-service affecting common equipment failure condition. Unknown The OSU 300 is unable to determine the state of the network or the remote unit. REMOTE STATUS: DATA LINK This field displays the current state of the data link between the remote and the local OSU 300s.
Quad DSX-1 interface card. DTE Leads If a lead is active on the port, it displays in this field. The leads differ according to the interface type. This field does not apply to OSU 300 User Manual 61200663L1-1...
The Quad DSX-1 interface card has just been inserted and is initializing. Comm Error The OSU 300 unit is unable to communicate with the Quad DSX-1 interface card. If displayed, call ADTRAN Technical Support (refer to the last page of this manual).
Asserted by the unit to request a loopback from the DTE. TM (test mode) Asserted by the OSU 300 when either the network or the port is being tested. Both TA and CA must be on before data will flow.
Clear to send. Carrier detect. Data terminal ready. Data set ready. Local DTE port loopback. Remote port payload loopback. Test mode. Asserted by the OSU 300 when either the network or the port is being tested. 61200663L1-1 OSU 300 User Manual...
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Chapter 4. Status OSU 300 User Manual 61200663L1-1...
5-1). If a Quad DSX-1 card is installed, the menu item O THER appears on the main S screen. This selection TATISTICS TATISTICS provides access to alarm counts for the DSX-1 ports. Figure 5-1. Main Local Statistics Menu Screen 61200663L1-1 OSU 300 User Manual...
ONFIGURATION ETWORK Alarm History The OSU 300 keeps track of yellow and red alarms for the near end. View alarm history information in one of the three time period selections, or view a cumulative alarm count. Information in these fields is for the given time period (if any) since the last reset. The...
When a > or < symbol appears in the upper corner of the screen, you can use the arrow keys on your keyboard to scroll right or left to view addi- tional information (see Figure 5-3 above). 61200663L1-1 OSU 300 User Manual...
Information in these fields is for the given time period since the last reset. When viewing the 24-hour history statistics screen, use the left and right arrow keys to scroll through all 96 15-minute intervals. See Figures 5-6 through 5-8 for examples OSU 300 User Manual 61200663L1-1...
Chapter 5. Statistics of the performance parameter screens. Descriptions of each field on these screens follow the illustrations. Figure 5-6. Network Statistics Menu for Current 15-Minute Interval Figure 5-7. Network Port Statistics 24-Hour History 61200663L1-1 OSU 300 User Manual...
Number of seconds in which one or more CVs or one or more LOS (loss of signal) defects occurred. P-Bit Errored Seconds (PES) Number of seconds with one or more PCVs (P-bit coding violations), one or more out of frame defects, or a detected OSU 300 User Manual 61200663L1-1...
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Time that the network port is available for data delivery. Clear All Local DS3 Statistics/Refresh All Remote Statistics Clears or refreshes all current information. These selections affect all statistical information (not just the displayed screen). 61200663L1-1 OSU 300 User Manual...
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Chapter 5. Statistics OSU 300 User Manual 61200663L1-1...
The D menu allows you to initiate loopback and BERT IAGNOSTICS tests from the OSU 300. Figure 6-1 on page 6-2 shows the main menu. Perform tests for the entire DS3 or for an IAGNOSTICS individual DTE port. If a Quad DSX-1 card is installed, activate loopback tests for an entire card (all four DSX-1s) or for an individual DSX-1 port.
When you access the DS3’s diagnostic options by selecting 1 from the main D menu, the screen shown in Figure 6-2 IAGNOSTICS displays. Figure 6-2. DS3 Diagnostics Menu Data Mode Ends a test already in progress for this port. OSU 300 User Manual 61200663L1-1...
This selection initiates a DS3 loopback test for the remote unit and sends/checks the BERT pattern over the entire DS3 payload bandwidth. DTE Ports 1-4 Access the DTE port diagnostic options by selecting the number corresponding with the desired port (options 2 through 5) from the 61200663L1-1 OSU 300 User Manual...
Perform this test to verify the integrity of the portion of the DS3 link connecting the selected port of the OSU 300 and the remote DTE. This test is non- intrusive to the three other ports (see Figure 6-5 on page 6-5).
Figure 6-6. Payload BERT Test DTE Loopback This test is used to verify proper operation of the link between the OSU 300 and the terminal equipment. During this test, all data sent by the terminal equipment is looped back to the terminal 61200663L1-1...
Select this test to perform payload and DTE loopbacks simultaneously. The individual tests are described on page 6-3 and page 6-5, respectively. Figure 6-8 shows a block diagram illustrating this test. OSU 300 Figure 6-8. Payload and DTE Loopback Test OSU 300 User Manual 61200663L1-1...
Perform this test to verify the integrity of the portion of the DS3 link connecting the local DTE and the selected port of the remote OSU 300. All other ports on both the local and remote units are unaffected.
During this test, all information from the network side (DS3) for the selected DSX-1 interface is looped back towards the network. See Figure 6-11 for an illustration of this test. OSU 300 Quad DSX-1 DSX-1 DS3 MUX Figure 6-11. Framer Loopback Test OSU 300 User Manual 61200663L1-1...
During this test, all information on the selected DSX-1 interface, including framing, is looped back towards the DTE. See Figure 6-13 for an illustration of this test. OSU 300 Quad DSX-1 DSX-1 DS3 MUX Figure 6-13. Line Loopback Test 61200663L1-1 OSU 300 User Manual...
Figure 6-14. Payload Loopback Test DTE Loopback During this test, the combined information from the four DSX-1 interfaces is locally looped at the multiplexer of the OSU 300 back towards the Quad DSX-1 interface card. The end result of this test is 6-10...
6-16 for an illustration of this test. OSU 300 OSU 300 Quad DSX-1 Quad DSX-1 DS3 MUX DS3 MUX DSX-1 DSX-1 Port in Payload Unit in Data Mode and DTE Loopback Figure 6-16. Payload and DTE Loopback Test 61200663L1-1 OSU 300 User Manual 6-11...
• All zeros • 2^15-1 • All ones • 2^23-1 The test pattern is used to independently test the operation of the framing circuitry and the network interface of the OSU 300. Instead 6-12 OSU 300 User Manual 61200663L1-1...
OSU 300’s internal test pattern generator and detector. Figure 6-18. BERT Pattern Menu Invert Pattern If set to E , the OSU 300 inverts the transmitted and received NABLE BERT test pattern. This allows the unit to be compatible with test equipment which generates inverted BERT patterns.
Chapter 6. Diagnostics Errors Displays the number of BERT errors received by the OSU 300 since the last reset. Current Err/Sec Displays the number of BERT errors received by the unit in the last second. Insert Error Inserts one error into the data stream.
44.2 Mbps data over unchannelized T3 circuits. In the application shown in Figure 7-1, the OSU 300 provides network connectivity for a router running at 44.2 Mbps. The data is frame relay and the unit is SNMP-managed via the local Ethernet.
When networking requirements call for sharing the bandwidth of a point-to-point T3 circuit, additional data ports can be installed into the OSU 300 for multiport operation. The OSU 300 supports up to three port option cards (Quad DSX-1, V.35 or HSSI). These option cards are hot-swappable and can be field installed.
Chapter 7. Applications The bandwidth is split by the OSU 300 to provide 18 Mbps for each router, 1.5 Mbps for the video conference units, and 6 Mbps for the main frames. See Table 7-2 for an example configuration of this application.
FRACTIONAL T3 CARRIER APPLICATION When network providers want to provide service at rates less than full T3, OSU 300 units can be used in pairs for deploying sub-T3 rate services. In this application example (shown in Figure 7-3 on page 7-5), a carrier provides fractional T3 access at 8 Mbps for internet connectivity.
Nothing required. Remote unit Management can be managed using the lo- Subnet Mask - 255.255.255.0 cal OSU 300. Gateway IP Address - 12.6.12.1 IP Security - Disabled Trap IP Address - 12.6.12.10 Management Port - LAN 61200663L1-1 OSU 300 User Manual...
Chapter 7. Applications REMOTE SNMP MANAGEMENT APPLICATION A remote OSU 300 can be managed by a local management station if the remote unit is assigned its own IP address. This address must be assigned at both the near and far ends. Also, the D option must be enabled on both units.
Port State - Enabled Port State - Enabled Nx75k blocks - 240 Nx75k blocks - 240 DTE 2 (HSSI) Port State - Enabled Port State - Enabled Nx75k blocks - 80 Nx75k blocks - 80 61200663L1-1 OSU 300 User Manual...
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Nothing required. Remote unit Management can be managed using the lo- Subnet Mask - 255.255.255.0 cal OSU 300. Gateway IP Address - 10.4.10.1 IP Security - Disabled Trap IP Address - 10.4.10.10 Management Port - LAN OSU 300 User Manual 61200663L1-1...
Pinouts Appendix A The following tables give the pin assignments for the connectors located on the OSU 300. For more information on these connectors, see the chapter Installation and Operation on page 2-1. Table A-1. Control Port Pin Assignments RJ Pin#...
Loopback Circuit A (LA) Send Data (SD) Loopback Circuit B (LB) Signal Ground (SG) 14-18 39-43 Five Ancillary to DCE Signal Ground (SG) 20-23 45-48 Five Ancillary from DCE Test Mode (TM) Signal Ground (SG) OSU 300 User Manual 61200663L1-1...
Description Protective Ground (PG) Signal Ground (SG) Request to Send (RTS) Clear to Send (CTS) Data Set Ready Received Line Signal Detector (CD) – Data Terminal Ready (DTR) – not used – Local Loopback (LL) 61200663L1-1 OSU 300 User Manual...
Table A-5. Quad DSX-1 Interface Card Pin Assignments Name Description R1 TXDATA-RING Send data toward DTE T1 TXDATA-TIP Send data toward DTE UNUSED – R RXDATA-RING Receive data from DTE T RXDATA-TIP Receive data from DTE 6,7,8 UNUSED – OSU 300 User Manual 61200663L1-1...
Specifications Summary Appendix B SPECIFICATIONS AND FEATURES This section describes the standard specifications and features incorporated into the OSU 300. Optical Interface Clear channel, non-channelized DS3. Line length: Single-mode (40 Km); multi-mode (2 Km). Framing format: M13 and C-bit parity.
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Remote configuration and statistics access available inband. SNMP/Telnet Integrated 10BaseT Ethernet and SLIP/PPP (async) port. MIB II, RFC 1213 and 1407 compliant. ADTRAN Enterprise MIB for extended monitoring and control/ configuration. Agency Approvals FCC Part 15, Class A, UL and CUL Environment Operating: 0 to 50 °C (32 to 122 °F)
CSU ....channel service unit CTS....clear to send dB....... decibel DCD ....data carrier detect data communications equipment DCE ....DDS....digital data service DLCI ....data link connection identifier DSR ....data set ready 61200663L1-1 OSU 300 User Manual...
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MIB....management information base ms....... millisecond NC...... normally closed NI ....... network interface NMS ....network management system NO ..... normally open NRZ ....non-return to zero OCU....office channel unit OOF ....out of frame OSU 300 User Manual 61200663L1-1...
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....synchronous TA ...... terminal equipment available TD...... transmit data time division multiplexing TDM....TM ..... test mode TR ...... data terminal ready Tx ....... transmit UAS ....unavailable seconds wide area network WAN....61200663L1-1 OSU 300 User Manual...
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Appendix C. Acronyms/Abbreviations OSU 300 User Manual 61200663L1-1...
The bandwidth determines the rate at which information can be sent through a channel (the greater the bandwidth, the more information that can be sent in a given amount of time). 61200663L1-1 OSU 300 User Manual...
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T3 operates at 44.736 Mbps. bipolar violation. A violation in the alternate mark inversion line code for which consecutive 1s are represented by pulses of opposite polarity. BPVs that are not OSU 300 User Manual 61200663L1-1...
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The channel bank also detects and transmits signaling information for each channel, thereby transmitting framing information so that time slots allocated to each channel can be identified by the receiver. 61200663L1-1 OSU 300 User Manual...
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(2) to provide a time base. control port The electrical interface between the OSU 300 and the control terminal. The con- trol terminal is used to communicate commands to the unit. customer premise equipment. All telecommunications terminal equipment...
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1.544 Mbps). digital signal level three. Equivalent of 28 DS1s and 672 DS0s (total bandwidth is 44.736 Mbps). data service unit. A device designed to transmit and receive digital data on digi- tal transmission facilities. 61200663L1-1 OSU 300 User Manual...
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TV, wire, satel- lite, and cable. facility datalink. FDL bits provide overhead communication between the termi- nal equipment in ESF framing. gateway A device which enables information to be exchanged between two dissimilar systems or networks. OSU 300 User Manual 61200663L1-1...
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Defined as a line state in which no pulses are received for 175 bit positions. DS1/DS3 multiplexer that combines up to 28 DS1 channels into one DS3 chan- nel. Uses two-stage, bit synchronous TDM. Mbps Megabits per second (one million bits per second). 61200663L1-1 OSU 300 User Manual...
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1 bit, and does not return to zero between successive 1 bits. out-of-band Signaling that is separated from the channel carrying information (voice, data, video, etc.). Typically the separation is accomplished by a filter. The signaling includes dialing and other supervisory signals. OSU 300 User Manual 61200663L1-1...
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LOS or OOF not caused by an alarm indication signal (AIS) that persists for more than two seconds. remote configuration A feature designed into ADTRAN products that allows remote units to be con- figured from a local unit or a VT 100 compatible terminal. router A device that supports communications between networks.
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Transmission rates of 1.544 Mbps are available on T1 communication lines. Also referred to as digital signal level 1 (DS-1). See also E1. Transmission rates of 44.736 Mbps are available on T3 communication lines. Also referred to as digital signal level 3 (DS-3). D-10 OSU 300 User Manual 61200663L1-1...
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VT 100 A non-intelligent terminal or terminal emulation mode used for asynchronous communications. Used to configure the OSU 300. wide area network. A communications network serving geographically separate areas. A WAN typically extends a LAN outside the building to link to other LANs over telephone lines.
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Appendix D. Glossary D-12 OSU 300 User Manual 61200663L1-1...
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3-7 auth failure traps 3-15 normal 3-7 auxiliary port 1-3 source 3-7 cold start traps 3-15 Com Eqpt Fail (NSA) 4-3 bad boot sector 3-18 common equipment fail NSA 3-14 bad checksum 3-18 61200663L1-1 OSU 300 User Manual Index-1...
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Quad DSX-1 6-1 far end alarm 3-13 DS3 6-1 far end alarm traps 3-14 diagnostics 6-2 FBE 5-7 interface 2-7 F-bit errors 5-7 network 3-1 FCC regulations, iv payload loopback 6-3 flash load 3-17 Index-2 OSU 300 User Manual 61200663L1-1...
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3-13 IP hosts 3-16 near end alarm trap 3-14 IP security 3-16 network 3-2 alarm 4-2 LEDs 2-12 LA 4-6 manager 1-3 LAN 1-3 port, status information 4-2 pin assignments A-3 test 3-13 61200663L1-1 OSU 300 User Manual Index-3...
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2-12 port bandwidth 3-5 payload loopback with BERT test 6-3 port state 3-5 port payload loopback test 6-7 port status 4-4 SNMP application 7-6 power up state 4-3 AC version 2-8 remote status Index-4 OSU 300 User Manual 61200663L1-1...
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TD LED 2-13 warranty, v TDM 1-1 write community name 3-13 technical support vi TELNET 1-1 2-12 3-11 3-16 terminal interface 3-1 yellow alarm 4-2 terminal timeout 3-16 yellow alarm traps 3-14 test patterns 6-12 61200663L1-1 OSU 300 User Manual Index-5...
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