Tài liệu Soneplex Broadband and Soneplex Loop Extender Systems Alarm/Performance Remote Retrieval Options pdf

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Tài liệu Soneplex Broadband and Soneplex Loop Extender Systems Alarm/Performance Remote Retrieval Options pdf

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Application Note 1207 ® Telecommunications Soneplex Broadband and Soneplex Loop Extender Systems Alarm/Performance Remote Retrieval Options This application note provides detailed alternatives for transporting the Soneplex Broadband and Soneplex Loop Extender alarm and performance information from a remote location back to the central/hubbing location. The Soneplex Broadband System is used as an intelligent network hub for DS1 hicap distribution in the local loop. The network interface is one standard electrical DS3 signal. This DS3 signal is demultiplexed into twenty-eight DS1 circuits, which can then be delivered to up to twenty-eight remote locations utilizing either fiber or copper facilities. Overview ® ® Figure 1 HSW TAUHSP MXW MXP APU MPU D L X H L X C H L X C R L X O D S 2 W O D S 2 P Q L X W T 1 R P T R OPTICAL DS2 (6.3 Mbps) DS3 2B1Q H L X R Q L X P H L X R X.25 TBOS EIA- 422 EIA- 232 CRAFT INTERFACE 2 Alarm/Performance Remote Retrieval Options Application Note 1207 The Soneplex Loop Extender System is an intelligent network element providing DS1 services in point-to-point or point-to-multipoint applications. The network interface is twenty-eight standard electrical DS1 signals. The system can be used in a stand-alone configuration or with any multiplexer or network element that generates a standard DS1 signal. Overview OSS Interfaces The Soneplex systems provide several different monitoring and alarming interfaces that may be connected either locally or remotely to an external alarm collection device. The Soneplex chassis has 5 physical ports used for interconnection to the external alarm network. A brief description of the ports and their functionality follows: Port Function Port 1 EIA-422 Telemetry Byte Oriented Serial (TBOS) Port 2 EIA-232 TBOS, Craft Interface or TL1 Port 3 EIA-232 X.25 (no external PAD necessary), Craft Interface, TL1 or TBOS Port 4 EIA-422 Chassis to chassis communications Port on front of MPU TBOS, Craft Interface or TL1 EIA-232 These five ports are tied to the main processor unit (MPU) located in the right hand slot of both chassis. Each system module within the Soneplex Broadband and Soneplex Loop Extender chassis provides provisioning, alarm and performance information that is uploaded to the MPU. The MPU disseminates and stores the total system performance and provides the OS interfaces listed above. The MPU contains a central processor and non-volatile memory. In addition, each module has front panel LED indicators for visible identification of module status. The ADC DS3 Fiber Loop Converter (FLC) (referred to throughout this applica- tion note) interfaces with one DS3 signal and con- verts the signal to an optical signal. This signal is then transported to a remote DS3 FLC where it is converted back from an optical signal to an electri- cal signal. This system can be configured in an unprotected or 1:1 pro- tected configuration. Figure 2 H L X C H L X C H L X C H L X C 5 6 7 Q L X Q L X 12 13 14 15 16 17 15 19 20 21 22 23 24 R L X 26 27 28 M P U A P U CENTRAL OFFICE/ HUB CUSTOMER PREMISES REMOTE ONE POSITION WALL MOUNT CHASSIS H L X R CUSTOMER PREMISES REMOTE RACK MOUNT OR WALL MOUNT CHASSIS 400 STYLE MOUNTING UP TO 4 HLXR Q L X Q L X DISTRIBUTION LOOP (12 KFT) OPTICAL BUDGET UP TO 20 MILES H L X R H L X R H L X R CSU NID DS1 (3000' BETWEEN SPAN REPEATERS) TBOS EIA-422 EIA-232 X.25 CUSTOMER PREMISES REMOTE WALL MOUNT CHASSIS UP TO FOUR QLXs PER CHASSIS CUSTOMER PREMISES 3 Application Note 1207Alarm/Performance Remote Retrieval Options The communication ports, the MPU and APU modules are the same for both the Soneplex Broadband and Soneplex Loop Extender systems. Rear View Soneplex Loop Extender Chassis Soneplex Broadband Chassis Rear View with Cover Removed Figure 3 Figure 4 2 - 4 RX TX NO -------| |---- C -----|/|----- NC ALARM CR VIS CR AUD MJ VIS MJ AUD MN VIS MN AUD RMT ACO RX TX PORT 4 RS-422 + - + - PORT 1 RS-422 + - + - ACO IN PORT 3 RS-232 DTE PORT 2 RS-232 DTE J-29 J-30 SHIELD GND 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1-1 1-2 1-3 1-4 2-1 2-2 2-33-13-34-14-35-15-36-16-3 7-1 7-3 2-43-23-44-24-45-25-46-26-47-27-4 BITS SEC BITS PRI DS1 REF HSKP IN -1- -2- -3- -4- -5- -6- -7- -8- -48 A -48 B RTN A RTN B FRAME GND T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 T1 R1 L2 T R L1 STS - 1/DS3 TX RX PORT 4 CHASSIS TO CHASSIS CRITICAL/MAJOR/MINOR AND HOUSEKEEPING ALARMS PORT 1 TBOS PORT 2 CRAFT/TL1 PORT 3 X.25/TBOS/ CRAFT/TL1 CRITICAL / MAJOR / MINOR AND HOUSEKEEPING ALARMS PORT 1 TBOS PORT 2 TBOS/CRAFT/TL1 PORT 3 X.25/TBOS/ CRAFT/TL1 -48 V POWER A AND B FEEDS FRAME GROUND 4 Alarm/Performance Remote Retrieval Options Application Note 1207 Dry Relay Contacts The Soneplex Broadband and Soneplex Loop Extender chassis have critical, major, minor and remote dry relay contacts for alarming. Alarm Indication Critical Generated if six or more DS1s are in alarm Major Loss of one or more DS1s/service affecting alarms Minor All other alarms Remote Any remote alarm received at the hubbing point The alarm processor unit (APU) provides the critical, major and minor alarm indications and dry relay contacts for the Soneplex Broadband and Soneplex Loop Extender systems. These alarms are available as normally open or normally closed contacts which appear as wire-wrap pins on the backplane. Eight housekeeping alarm inputs which appear as contact wire-wrap pins are also located on the chassis backplane. These housekeeping alarm inputs are retrieved by the MPU and are reported through the craft interface, TBOS, TL1 commands and the X.25 port. TBOS The TBOS (Telemetry Byte Oriented Serial Protocol) interface is used for status and control. The TBOS interface is a reliable and easy to use means of communicating transmission alarm information between a monitoring system and the Soneplex system. TBOS communications may also be optioned through the craft interface, Port 1, Port 2, or Port 3. The TBOS ports are configured as an asynchronous, serial, half-duplex interface operat- ing at either EIA-422 or EIA-232 signal levels at a speed of 2400 bps. The Soneplex Broadband and Soneplex Loop Extender systems each use 8 displays, 512 bits. Status and command displays are supported. TL1 Interface Transaction Language 1 (TL1) commands may be used to communicate with both the Soneplex Broadband and Soneplex Loop Extender systems either locally or from a remote location. TL1 communication may be optioned through the craft interface port, Port 2 or Port 3. A full complement of TL1 commands and responses are supported including: • autonomous alarms • administration • performance monitoring • security commands • loop back Craft Interface Three EIA-232 25-pin D subminiature connectors provide the craft interface for a VT100 or compatible terminal. One connector is located on the MPU front panel and is config- ured as a DCE for local operation. Port 2 and Port 3 are located on the rear of the chassis and are configured as a DTE for remote operation. The craft interface may be optioned for auto baud or data rates up to 9600 bps. The craft interface provides local and remote access for provisioning, performance monitoring and administrative tasks. X.25 Interface Port 3 is a serial EIA-232 25-pin D subminiature connector that can support two logical connections over an X.25 connection. These two logical connections are in the form of permanent virtual circuits (PVC). The PVCs can be configured for craft interface or TL1 commands. 5 Application Note 1207Alarm/Performance Remote Retrieval Options Option 1 Alarming via Dry Relay Contacts The first option to bring back remote alarms to a central location takes the dry relay contacts of the Soneplex Broadband system and/or the battery back-up system and transports them to the central location using the DS3 FLC overhead. As seen in Figure 5, the Soneplex chassis and battery back-up are fed into the DS3 FLC housekeeping alarm inputs at the remote location and are reported back through the fiber optic overhead to the central location where they are monitored through either TBOS or dry relay contacts. Each DS3 FLC is capable of transporting one remote housekeeping alarm back to the central location which equates to a total of two alarms when operating in the DS3 protect configuration. This option works when the DS3 FLC is used as a fiber optic transport back to the central location. Typically, the DS3 FLCs are installed in pairs, providing 1:1 protection of the DS3 circuit. Therefore, two housekeeping alarm indications may be transferred back to the central location. It is recommended that the major alarm, which indicates the loss of one or more DS1 signals, be designated for transfer. The second alarm can be used for minor alarms from the Soneplex or battery back-up system. NOTE: • FLC MPU is not required for operation. If TBOS is required at a central location, an FLC MPU is required. • DS3 FLCs shown in a protected configuration. Figure 5 CENTRAL LOCATION REMOTE LOCATION (1) DS3 ELECTRICAL ALARM ALARM (1) ELECTRICAL DS3 TBOS REMOTE ALARM DRY RELAY CONTACTS SONEPLEX BROADBAND CHASSIS BATTERY BACK-UP SYSTEM DS3 FLC DS3 FLC MPU W P DS3 FLC DS3 FLC W P -48 Vdc 6 Alarm/Performance Remote Retrieval Options Application Note 1207 The dry relay contacts of the Soneplex Loop Extender chassis and/or the battery back-up system can also be transported to the central location using the housekeeping alarm inputs of a fiber optic terminal (FOT). Typically, each FOT has 8 to 20 housekeeping alarm inputs; therefore, a number of selected dry relay alarm contacts can be trans- ported back to the central location. The alarms available on the Soneplex Loop Extender chassis include the critical, major, minor and remote alarm contacts. As seen in Figure 6, these alarms are embedded into the fiber optic overhead of the FOT, brought back to the central location. All the designated remote alarms are recovered and delivered to an alarm collection device. Figure 6 Alarming via Dry Relay Contacts and Dial-Up Line CENTRAL LOCATION REMOTE LOCATION ALARMS ALARMS T1s 1 28 FOT BATTERY BACK-UP SYSTEM 1 28 T1s FOT REMOTE ALARMS ALARM COLLECTION DEVICE SONEPLEX LOOP EXTENDER CHASSIS The addition of a dial-up line to Option 1 greatly enhances the network visibility from the central monitoring location. The dry relay contacts give a broad overview of the health of the network. Once an alarm is detected at the remote location, a technician at the central monitoring location can dial-up the Soneplex Broadband or Soneplex Loop Extender system via a modem link and interrogate the system using the craft interface. This allows full visibility to performance monitoring, alarming and provisioning infor- mation. Refer to Option 2 for modem connection procedure. Advantages • No additional expense is required, yet operational status of DS1 circuits can be verified through transmitting the Soneplex system major alarm signal. • Loop backs can provide segmentation over the fiber optic network through the DS3 FLC. • No remote performance monitoring or provisioning capability from the central location. Disadvantages Option 1 Advantages/ Disadvantages 7 Application Note 1207Alarm/Performance Remote Retrieval Options The second option requires the installation of a dedicated phone line between the remote and central locations. This configuration will provide complete alarming information, performance monitoring and provisioning visibility at the central location. The front panel EIA-232 craft interface port, Port 2, or Port 3 of both the Soneplex Broadband and the Soneplex Loop Extender systems are connected to a modem for transport to an alarm collection device at the central location via the dedicated phone line (see Figure 7). If the front panel EIA-232 is used, a null modem cable is required to connect to a modem. Port 2 is configured as a DTE; therefore, a null modem cable is not required. Option 2 Dedicated Phone Line DEDICATED PHONE LINE CENTRAL LOCATION REMOTE LOCATION MODEMMODEM ALARM COLLECTION DEVICE OR TERMINAL TBOS/TL1/ CRAFT FRONT PANEL PORT, PORT 2 OR PORT 3 SONEPLEX BROADBAND OR LOOP EXTENDER CHASSIS Figure 7 DEDICATED PHONE LINE TL1/CRAFT/ TBOS OR DRY CONTACT ALARMS REMOTE LOCATION FOT M O D E M ALARM COLLECTION DEVICE M O D E M ALARM COLLECTION DEVICE CENTRAL LOCATION SONEPLEX BROADBAND CHASSIS SONEPLEX LOOP EXTENDER CHASSIS X.25 EIA-232 EIA-422 If multiple network elements exist at the remote location, one alarm collection device with an inte- grated modem can be utilized to collect many alarm interfaces from the different network elements (see Figure 8). This structure also trans- ports the alarming information via a dedicated phone line to the central location. Figure 8 • Complete alarm information, performance monitoring and provisioning capability can be accessed from a remote location. • Additional costing required to supplement the purchase and installation of the transport equipment. • A dedicated phone line is required to maintain data communication. DisadvantagesAdvantages Option 2 Advantages/ Disadvantages 8 Alarm/Performance Remote Retrieval Options Application Note 1207 The third option for retrieving alarms from a remote location utilizes a 64 Kbps channel of either a channel bank or digital loop carrier (DLC) (see Figure 9). The transmission equipment OSS ports interface with the alarm collection device that is equipped with a 64 Kbps serial interface that can be fed into a channel bank/DLC. The channelized DS1 output of the channel bank/DLC is brought into either the Soneplex Broadband system or FOT for transport back to the central location. The alarm information uses the bandwidth of 1 DS0 within the corresponding DS1. The other 23 DS0s remain available for other applications. To access alarm information at the central location, the signal must again be fed through a channel bank and demultiplexed to the 64 Kbps signal. Option 3 Integrated Alarm Retrieval Figure 9 Disadvantages Advantages • Additional costing potentially required to supplement the purchase and installation of the alarm collection device. • Complete alarm information, performance monitoring and provisioning capability can be accessed from a remote location. • Alarm equipment is capable of supporting future systems. • Various alarm collection devices are presently utilized in the network structure; therefore, the system may already be deployed within the desired locations. • Utilizes existing network structure to transmit the performance data. Option 3 Advantages/ Disadvantages TL1/CRAFT/ TBOS OR DRY CONTACTS REMOTE LOCATION FOT (or) CENTRAL LOCATION CHANNEL BANK OR DLC ALARM COLLECTION DEVICE DS3 FLC CHANNEL BANK FOT (or) DS3 FLC DS1 64 Kbps ALARMS SONEPLEX SYSTEM SONEPLEX LOOP EXTENDER CHASSIS DS1 64 Kbps SONEPLEX SYSTEM 9 Application Note 1207Alarm/Performance Remote Retrieval Options Option 4 Addition of Data Service Unit (DSU) The fourth option consists of adding a data service unit (DSU) at the remote location. The DSU interfaces with the Soneplex system subrate data ports and outputs a 64 Kbps signal. The configurations shown in Figures 10 and 11 provide complete alarm informa- tion, performance monitoring and provisioning capability while utilizing the existing delivery platform. The DSU will provide the interface from the Soneplex OSS functional- ity to the network. If the Soneplex Broadband system is deployed at the remote location, the selected OSS port (whether craft interface, TL1 or TBOS) is brought into the DSU data port where the signal is formatted for transport utilizing one of the 28 DS1 signals. A DS1 Loop Extender (DLX) access module will provide the interface between the DSU and the network. The DS1 is multiplexed into the DS3, transported to the central location by the DS3 FLC. At the central location, the DS3 is demultiplexed and the DS1 carrying the OSS communication is brought to the network element which recovers the data port, i.e., channel bank or DSU. DS1s REMOTE LOCATION SONEPLEX BROADBAND CHASSIS CENTRAL LOCATION DS3 FLC DS3 FLC 1 28 DS1 TBOS/ CRAFT/ TL1 DSU DS3 FLC DS3 FLC M1/3 DS1 TO CHANNEL BANK/ DSU, etc. . . . TBOS/TL1/CRAFT ELECTRICAL DS3 DS3 MUX APU DS3 MUX MPU DLX Figure 10 10 Alarm/Performance Remote Retrieval Options Application Note 1207 Figure 11 If the Soneplex Loop Extender chassis is deployed at the remote location, the selected OSS port is brought into the DSU data port where the signal is formatted for transport utilizing one of the 28 DS1 signals. The DS1 is multiplexed into the DS3 and trans- ported to the central location through a fiber optic terminal (FOT). At the central location, the DS3 is demultiplexed and the DS1 carrying the OSS communication is brought to the network element, which recovers the data port. REMOTE LOCATION CENTRAL LOCATION TBOS/ CRAFT/ TL1 SONEPLEX LOOP EXTENDER CHASSIS DS1 DSU FOTFOT DS1 TO CHANNEL BANK/ DSU, etc. . . . TBOS/TL1/CRAFT APU MPU 1 28 DS1s ADC Kentrox provides the transport equipment package and customer service to fully implement the DSU solution. Advantages • Utilizes existing network structure to transmit the performance data. • Complete alarm information, performance monitoring, provisioning and trouble shooting capability can be accessed from a remote location. • Additional costing required to support the DSU and required access modules. • A DS1 circuit must be utilized to transmit the performance data from the Soneplex system to the central office. Disadvantages Option 4 Advantages/ Disadvantages [...]... Interface CENTRAL LOCATION ANALOG ORDERWIRE INTERFACE REMOTE LOCATION ANALOG ORDERWIRE INTERFACE FOT FOT MODEM SONEPLEX BROADBAND OR LOOP EXTENDER FRONT PANEL PORT, CHASSIS PORT 2 OR PORT 3 MODEM Figure 12 – Analog Orderwire Interface CENTRAL LOCATION REMOTE LOCATION DIGITAL ORDERWIRE INTERFACE FOT FOT ANALOG/ DIGITAL CONVERTER SONEPLEX BROADBAND OR LOOP EXTENDER CHASSIS MODEM FRONT PANEL PORT, PORT 2 OR... provisioning and trouble shooting capability can be accessed remotely Alarm/Performance Remote Retrieval Options • Additional costs incurred to support this solution • Utilizes a portion of bandwidth (1 DS0) Application Note 1207 11 Acronyms ACO APU DLC DLX DSU FLC FOT Kbps LED MPU OSS PAD PVC PM SVC TBOS TL1 Alarm Cut-Off Alarm Processor Unit Digital Loop Carrier DS1 Loop Extender Data Service Unit Fiber Loop. .. documentation for this capability Any OS interface, whether it be craft, X.25, TBOS or TL1, may be brought back to the central location for monitoring and remote provisioning capability using one of the EIA-232 ports on the Soneplex Broadband or Soneplex Loop Extender chassis If the orderwire port has a digital 64 Kbps appearance, a 64 Kbps to VF interface card must be used Some alarm collection device...Option 5 The fifth option provides an inband solution utilizing the orderwire interface of a FOT Orderwire interfaces on FOTs may appear as either an analog or a digital 64 Kbps port If the orderwire port is an analog interface, an external modem may be used to convert the Soneplex Broadband or the Soneplex Loop Extender OS port to an analog signal This signal can then be fed... Alarm Processor Unit Digital Loop Carrier DS1 Loop Extender Data Service Unit Fiber Loop Converter Fiber Optic Terminal Kilobits per second Light Emitting Diode Main Processor Unit Operational Support Systems Packet Assembler/Disassembler Permanent Virtual Circuit Performance Monitoring Switched Virtual Circuit Telemetry Byte Oriented Serial Protocol Transaction Language 1 Telecommunications ® ADC Telecommunications, . MPU and APU modules are the same for both the Soneplex Broadband and Soneplex Loop Extender systems. Rear View Soneplex Loop Extender Chassis Soneplex Broadband. Note 1207 ® Telecommunications Soneplex Broadband and Soneplex Loop Extender Systems Alarm/Performance Remote Retrieval Options This application note provides

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