DATA SHEET SSU 2000 Intelligent NEBS-Compliant Sync Supply Unit ® The Symmetricom SSU 2000 is an intelligent, 280 outputs per shelf. Output modules may Key Features fully manageable Synchronization Supply be configured in redundant pairs providing • High capacity system: up to 640 1:1 Unit or Timing Signal Generator. It is used twenty 1:1 fully protected outputs per protected or 1280 unprotected outputs by communications network operators pair. Expansion shelves are designed with • Fully integrated, carrier-class NTP to generate and distribute superior redundant connections for reliable uptime. and IEEE 1588 PTP server blades synchronization signals for their networks. • Ready for SyncE network elements Auto-Reconfiguration: If a module is In addition to traditional TDM network timing • Performance monitoring on all inputs removed and a like module installed in capabilities, the SSU 2000 supports packet • Management: SNMP, Interactive the same slot, the new module will be ASCII, TL1 networks with signals including IEEE 1588 automatically configured to the same • Dynamic control algorithms for Precision Time Protocol (PTP) and carrier- superior performance settings as the previous module. class NTP for advanced network services. The SSU 2000 platform is also ready to Key Benefits Input signals are passed through in case support the seamless introduction of • Single platform for traditional TDM, of multiple internal failures, including NTP, PTP and SyncE SyncE-capable elements into your network. clock failures. • Carrier-class redundancy: module Designed in a NEBS-compliant package, protection for all critical functions it utilizes the latest hardware and software Intelligent Modules (inputs, holdover clock, outputs) integration technologies. Each SSU module has an integrated • Carrier-class capacity: TDM ports, NTP transactions, PTP clients CPU with software for superior reliability, Industry Standards Compliance • Carrier-class design and features: flexibility and functionality. Modules can precision time accuracy, end-to-end The SSU 2000 is designed to meet the be removed or inserted while the unit is management, standards compliance latest and evolving industry standards, and certifications operating without any degradation of the including ANSI, Telcordia, ITU-T, ETSI, • Seamless interoperation with output signals. Each intelligent module embedded sync and timing solutions IEEE 1588 and CE/AS. supports the management of critical, major in other network elements and minor alarms. Powerful management Architecture can be performed to and within each The SSU 2000 architecture is designed module through the communication to integrate intelligent, functional modules module. into a flexible, fully redundant system to seamlessly satisfy current and future Major Applications requirements. • Synchronization Supply Unit (SSU) • Primary Reference Source (PRS) The system provides total output capacity • Building Integrated Timing Supply (BITS) of up to 1280 unprotected ports or 640 • Subtending Timing Signal Generator protected ports. Up to 160 outputs are • IEEE 1588 Grandmaster available in the main unit, and up to 1120 additional outputs are available through • PRS traceable reference for Synchronous four expansion shelves with a capacity of Ethernet Page 1 of 4 DATA SHEET SSU 2000 Input Section The SSU 2000 accepts up to nine input modules, available in a one-port or three- port version, thus providing up to twenty- seven inputs. Each module is fully user configurable through software to support the following signals: • DS1/E1 • SSM quality • Japan JSW and JCC • 1 MHz (sine or square) • 1.544 MHz (sine or square) • 2.048 MHz (sine or square) • 5 MHz (sine or square) • 10 MHz (sine or square) • Single unit Primary Reference Both models support the following Various input impedance panels are Source (PRS) management interfaces: available to support the following balanced • Interactive ASCII • Time Of Day (TOD) through the or unbalanced signal impedances: Network Time Protocol (NTP) • TL1 • 50 ohms (sine) • SNMP (optional) • 75 ohms (DS1/E1) Intelligent Clock Module • 100 ohms (DS1) The SSU accepts single or dual clocks. The RADIUS Capable Comm Card includes • 120 ohms (E1) A selection of mixed SynClock technologies security features: support for RADIUS • 133 ohms (CC) is available to meet specific holdover authentication, Secure Shell (SSH) and • High impedance for timing extraction requirements. Secure File Transfer Protocol (SFTP). The only (bridging mode) • Enhanced Rubidium-Stratum 2E RADIUS card also supports dual images • Specific panel/adapter connection • Enhanced Quartz-Stratum 3E and Type I and allows network administrators to interfaces: schedule automatic firmware upgrades. - Wire wrap Superior Holdover Performance - COAX Output Section In case of loss of GPS and input references, - BNC The SSU 2000's main unit accepts up the SSU 2000 uses intelligent software - Siemens to eight output modules, providing 160 to provide enhanced output performance - DE-9 outputs.Up to four expansion shelves can beyond the required holdover stability. be added, providing up to 1120 additional Its superior holdover capability retains GPS Module outputs.The output modules may also be stratum G.812 performance for for three The SSU accepts single or dual GPS configured for redundant operation that weeks during holdover conditions with primary receiver modules to meet primary supplies 20 protected outputs per pair. a rubidium clock. reference clock requirements, which Various output modules are available to provides the following key benefits: Communication Module meet specific signal and interconnection • Flattens the number of levels in the The SSU 2000 utilizes a single requirements including T1, E1, CC, JSW, sync distribution hierarchy communication module, available in JCC, RS-422, carrier-class NTP, and IEEE • Improves the overall performance two different models. Coupled with 1588 PTP. The activation of the outputs of the network Symmetricom’s advanced management ports are fully user controllable. • Lowers the overall OAM&P costs software solutions, the communication (Operation, Administration, Maintenance, module provides powerful fault, and Provisioning). configuration, accounting/inventory, performance, security, and other optional management functions. Page 2 of 4 DATA SHEET SSU 2000 2048 kHz output modules may be installed, including NTP and PTP server blades. Each pair of output modules produces 20 outputs, thus providing up to 280 output signals. Up to four expansion shelves 23” High Density Wire Wrap Panel (100 Outputs) can be connected together to produce an additional 1120 output signals. These output modules may also be configured as redundant pairs to provide 1:1 fully protected outputs. The last expansion shelf in the chain can be located up to 200 feet away from the main shelf. 19” High Density Wire Wrap Panel (80 Outputs) Subtending Mode Of Operation The SSU 2000 configured as a Subtending SSU broadens the Symmetricom SSU 2000 family of products by providing subtending Select Rate Output Module Connectivity clock functionality when referenced to a The RS-422/TTL Output module generates There are a variety of input and output master TSG/BITS equipped with a Stratum 10 balanced square-wave outputs (TTIP and panels available with several types of 3E or better clock. The Subtending SSU TRING signal pairs on ports 1-10) and 10 connectors. These include DE9, BNC, is used when there is a need for more single-ended (RING) squarewave outputs on and Siemens connectors. Also available timing outputs or longer distribution paths ports 11-20. Each output can be turned off are High density Wire Wrap Panels in both than can be supplied by a single TSG. independently of other ports: relays on each 80 and 100 output versions. The subtending SSU receives redundant output disconnect the driver output from Synchronization Status Messages composite clock reference signals directly the output pins. A squelch feature turns off (SSM) from the master BITS clock. These CC selected ports when the input signal falls The Input Module reads and processes signals are used for primary and secondary below predetermined quality levels. Sync Status Messages (SSM) in accordance inputs, and the SSU phase locks to the DS1 Line Retiming Unit (LRU) with ITU-T and ANSI Standard T1.403 to selected reference to ensure proper DS0 The LRU is comprised of a Line Re-timing determine the traceability of inputs. This phase alignment throughout the office. Module (LRM) and a Cut-Through Assembly traceability information is then used by If both CC reference inputs fail, the shelf (CTA). The LRU is a four-port (Quad) the clock modules in selecting a reference provides Stratum 3E holdover stability. If module. The DS1 LRU inserts DS1 signals signal, and is embedded into the system’s both 3E clock modules fail, the Subtending on both sides of a DSX-1 panel in a Central outputs. An embedded editable table allows SSU uses the CC reference input for clock Office. Side 1 of the DS1 re-timer provides upgrades as standards evolve. bypass operation to maintain uninterrupted “3R” (Re-shape, Re-amplify, and Re-time) outputs. Expansion Shelf (SDU) for the DS1 signal to a client Network The SDU 2000 Synchronization Distribution NEBS Level 3 Certification Element. When the LRU receives a DS1 Unit, is an expansion shelf that is connected The SSU 2000 is fully Network Equipment data stream, it re-times the data with the to an SSU 2000 Synchronization Supply Unit Building System (NEBS) certified. This transmit clock signal. The clock signal is and is used to provide additional output ensures the SSU 2000 meets established inserted into the DS1 line route between signals. The expansion shelf uses the safety and reliability standards. two DS1 path-terminating elements. framing and synchronization features Side one is the direction in which timing of the main shelf to drive an array of output is applied. Side 1 contains the DS1 line modules. Each expansion shelf in the performance reporting and AIS generator. system can accept 14 output modules, and Side 2 provides “2R”, which Re-shapes and two buffer modules. Any combination of Re-amplifies (regenerates) the DS1 signal DS1, E1, Composite Clock, Select Rate, or from the client Network Element. Page 3 of 4 DATA SHEET SSU 2000 Specifications . . . . ARCHITECTURE PORT OUTPUT . . . . . • 1 or 3 ports/module, reference or monitoring capability . • Main unit modules: 2 clock, 1 comm, 9 mixed input/ SLOT . . . . output . . • Up to 27 inputs for monitoring or references • Main unit: 9 single or redundant . . . . • Each output expansion shelf will accept up to 14 . . • Embedded Sync Status Messaging (SSM) • Expansion shelf: 14 output modules and 2 buffer . . . . output modules of various types, thus providing an . . modules . • Integrated performance measurements (TIE, MTIE, . additional 280 outputs per shelf. The SSU 2000 will . . . . TDEV, ERROR RATES) on all inputs accomodate up to four expansion shelves, for a total . . PORTS PER MODULE . . of 1120 additional outputs. The last expansion shelf in . . • All SSU 2000 Output Modules have 20 output ports . . TYPE . . the chain can be located up to two hundred feet away . . • DS1, E1, 1 MHz, 1.544 MHz, 2.048 MHz -G.703/13, . . from the main shelf. TYPE . . . 5 MHz, 10 MHz, Japan JSW/JCC (user selectable) . . . • DS1, E1, and composite clock, plus a port selectable • The SSU 2000 is a fully automated and software man- . . . . 2.048 MHz/2.048 Mbps ageable system. Firmware upgrades can be remotely . GPS . . . . . installed, thus negating the necessity of site visits for . • Integrated single or dual GPS modules. Slots 3 and 5. . • RS-422/TTL provides output frequencies from 8 kHz . . update purposes. . . If slot 5 is not occupied by a secondary GPS module, to 4096 kHz in 8 k steps. . . . . any other input or output module may be installed . . • Carrier-class NTP (refer to NTP Blades for SSU 2000 . . GPS PERFORMANCE there. . . . . data sheet) . . • Compliant with Stratum 1 PRS (Primary Reference . . SELECTION MODE . . • IEEE 1588-2008 (PTP) (refer to IEEE 1588 Blades for Source) per ANSI T1.101-1999, ITU-T G.811, Telcordia . . . . • Priority, SSM, Performance Mask SSU 2000 data sheet) . . GR-2830/1244-CORE, and ETS 300 462-6. . . . . . REALTIME CPU . SYNC STATUS MESSAGING (SSM) . . CLOCK PERFORMANCE . . . • Intelligent software for real-time MTIE, TDEV and . • Fully supported per above-listed standards . . • Compliant with clock levels per ANSI T1.101-1994 . . TIE performance monitoring. . . . . MAX. CAPACITY & 1997 draft, ITU-T G.812, Telcordia GR-2380/1244- . . . . CORE and ETS 300 462-4. • Main shelf: up to 160 outputs . PERFORMANCE MEASUREMENT . . . . . . . • Up to 1120 outputs: 4 expansion shelves, 280 ports RESOLUTION . . SYNC STATUS MESSAGING (SSM) . . per shelf . . • Measurements are provided for each input versus . . • Compliant with SSM specification per T1X1.3 TR33, . . each clock at a resolution of 1ns. . . ANSI T1.101-1997 draft, ITU-T G.704, and Telcordia . . COMMUNICATION & MANAGEMENT . . GR-253-CORE . . SAMPLING RATE . . COMMUNICATION PORT . . . . • 40 Hz . . • EIA-232 NETWORK TIME PROTOCOL (NTP) . . . . . . • Compliant with RFC 5905 (V4); Stratum 1 server • Ethernet, 10 Base-T, TCP/IP . . CALCULATIONS . . with GPS module(s) . . . . MTIE MANAGEMENT INTERFACE . . . . • Supports client and server modes in unicast and . . • Exceeds the latest ITU-T, ANSI and Telcordia • Simple fault, visual & contact closures . . broadcast . . standards with measurement intervals of 0.5 . . • Embedded Interactive ASCII . . . to 100,000 seconds. . . . COMMUNICATIONS & MANAGEMENT . . • Embedded TL1 . . . TDEV . • 3x EIA-232 and 1x Ethernet ports, supporting interac- . . • Embedded SNMP (optional) . . tive ASCII, TL1, and SNMP • Exceeds the latest ITU-T, ANSI and Telecordia . . . . . standards with measurement intervals of 0.1 . LOCAL MANAGEMENT . . . . to 10,000 seconds. REDUNDANCY . . • Windows GUI-based Local Management Terminal . . . . • For any pair of output modules, it is possible to con- . PHASE . . . nect all of the outputs from module “A” to the outputs . . ENVIRONMENTAL . • 1, 100, 1,000, and 10,000 second phase averages . . . of module “B”, thus providing 1:1 output protection . . and history are available. POWER (VDC) . . (1:1 redundancy). This feature is user configurable. . . . . • Dual -38 to -74.9 . . FREQUENCY . . . . EVENT LOG • Less than 120 watts power consumption per shelf • Frequency measurements can be viewed via user . . . . . selectable calculation periods from 10 to 10,000 . • Stores up to 500 events from any system faults, user . . SIZE (HXWXD) . . seconds. interventions, and system actions. Events are time & . . . . • 10.47” x 18.9” x 9” (266mm x 480mm x 229mm) date stamped to less than 1 msec. . . . . . . CLOCK . . WEIGHT (MAX.) . . INPUT . . • 26.7 lbs (12.1kg) main unit, 22.3 lbs (10.1kg) for . HOLDOVER TYPE . . . . . each expansion unit SLOT • Enhanced Rubidium (Type II) . . . . . . • 9 . • Enhanced Quartz (Type I for ITU-T Standards) . OPERATING TEMPERATURE . . . . • Slots 3 through 11 are Input/Output slots. • 0°C to 50°C . • Enhanced Quartz (Type III) . . . Additionally, slots 3 and 5 will also accept GPS . . . . • EMC: Radiated emissions are 6dB below the modules . CONTROL . . . Class B requirement. . . • DDS (Direct Digital Synthesis) technology for cost- . . . . . effective calibration-free operation and precise . . . . . frequency control . . 2300 Orchard Parkway © 2011 Symmetricom. Symmetricom and the Symmetricom logo are registered trademarks San Jose, California 95131-1017 of Symmetricom, Inc. All specifications subject to change without notice. tel: 408.433.0910 fax: 408.428.7896 www.symmetricom.com DS/SSU2000/092811