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

Application Note 1207 Soneplex ® Broadband and Telecommunications ® Soneplex® Loop Extender Systems Alarm/Performance Remote Retrieval Options Overview 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. H L X R 1 R R Q Q X.25 L L X X W P 2B1Q OPTICAL DS2 (6.3 Mbps) HSW HSP MXW MXP TAU DS3 H R L L X X C APU O O D D S S 2 2 W P D H L L X X C MPU EIA- 422 TBOS EIA-H 232 L X R CRAFT INTERFACE Figure 1 Overview 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. H H H H 5 6 7 Q L L L L L X X X X X C C C C DISTRIBUTION LOOP (12 KFT) X.25 CENTRAL OFFICE/ HUB Q 12 13 14 15 16 17 15 19 20 21 22 23 24 R 26 27 28 M A L L P P X X U U OPTICAL BUDGET DS1 EIA-422 UP TO 20 MILES (3000` BETWEEN SPAN REPEATERS) EIA-232 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. NID TBOS H H H H Q Q L L L L L L X X X X X X R R R R CSU CUSTOMER PREMISES REMOTE ONE POSITION WALL MOUNT CHASSIS CUSTOMER PREMISES REMOTE RACK MOUNT OR WALL MOUNT CHASSIS 400 STYLE MOUNTING UP TO 4 HLXR CUSTOMER PREMISES CUSTOMER PREMISES REMOTE WALL MOUNT CHASSIS UP TO FOUR QLXs PER CHASSIS Figure 2 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 Port 1 EIA-422 Port 2 EIA-232 Port 3 EIA-232 Port 4 EIA-422 Port on front of MPU EIA-232 Function Telemetry Byte Oriented Serial (TBOS) TBOS, Craft Interface or TL1 X.25 (no external PAD necessary), Craft Interface, TL1 or TBOS Chassis to chassis communications TBOS, Craft Interface or TL1 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. Alarm/Performance Remote Retrieval Options Application Note 1207 2 The communication ports, the MPU and APU modules are the same for both the Soneplex Broadband and Soneplex Loop Extender systems. Soneplex Loop Extender Chassis CRITICAL / MAJOR / MINOR AND HOUSEKEEPING ALARMS PORT 2 TBOS/CRAFT/TL1 -48 V POWER A AND B FEEDS PORT 1 TBOS PORT 3 X.25/TBOS/ CRAFT/TL1 FRAME GROUND Rear View Figure 3 Soneplex Broadband Chassis CRITICAL/MAJOR/MINOR AND HOUSEKEEPING ALARMS PORT 1 PORT 2 TBOS CRAFT/TL1 PORT 3 X.25/TBOS/ CRAFT/TL1 PORT 4 CHASSIS TO CHASSIS -48 A -48 B PORT 2 PORT 3 RS-232 RS-232 DTE DTE RTN A ALARM RTN B NO -------| |---- C -----|/|----- NC HSKP IN J-29 J-30 FRAME GND SHIELD GND CR VIS CR AUD MJ VIS MJ AUD MN VIS MN AUD RMT ACO -1--2--3--4--5--6--7--8- PORT 1 RS-422 + - RX + TX ACO - IN 1 2 3 4 5 6 7 8 1 PORT 4 3 RS-422 4 + - RX 7 + TX 8 - 7-3 7-1 6-3 6-1 5-3 5-1 4-3 4-1 3-3 3-1 2-3 2-1 1-3 1-1 T T T T T T T T T T T T T T L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 R R R R R R R R R R R R R R T1 T1 T1 T1 T1 T1 T1 L2 L2 L2 L2 L2 L2 L2 R1 R1 R1 R1 R1 R1 R1 T1 T1 T1 T1 T1 T1 T1 L2 L2 L2 L2 L2 L2 L2 R1 R1 R1 R1 R1 R1 R1 T T T T T T L1 L1 L1 L1 L1 L1 R R R R R R T T T T T T T T L1 L1 L1 L1 L1 L1 L1 L1 R R R R R R R R TX T1 T1 T1 T1 T1 T1 T1 T1 T1 T1 T1 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 L2 R1 R1 R1 R1 R1 R1 R1 R1 R1 R1 R1 7-4 7-2 6-4 6-2 5-4 5-2 4-4 4-2 3-4 3-2 2-4 2 - 4 T1 T1 T1 L2 L2 L2 R1 R1 R1 2-2 1-4 1-2 DS1 BITS BITS REF PRI SEC STS - 1/DS3 RX Rear View with Cover Removed Figure 4 Alarm/Performance Remote Retrieval Options Application Note 1207 3 Dry Relay Contacts The Soneplex Broadband and Soneplex Loop Extender chassis have critical, major, minor and remote dry relay contacts for alarming. Alarm Critical Major Minor Remote Indication Generated if six or more DS1s are in alarm Loss of one or more DS1s/service affecting alarms All other alarms 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 • performance monitoring • loop back • administration • security commands 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. Alarm/Performance Remote Retrieval Options Application Note 1207 4 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. CENTRAL LOCATION REMOTE LOCATION (1) ELECTRICAL DS3 DS3 FLC DS3 FLC W W (1) DS3 ELECTRICAL SONEPLEX BROADBAND CHASSIS DS3 FLC DS3 FLC P P ... - tailieumienphi.vn