1993 Specifications CSJ SPECIAL SPECIFICATION ITEM Digital Loop Carrier System

Transcription

1 1993 Specifications CSJ SPECIAL SPECIFICATION ITEM 6797 Digital Loop Carrier System 1.0 Description. This Item shall govern for the furnishing and installation of the Digital Loop Carrier System in designated locations as shown on the plans and as detailed in accordance with these specifications. All digital loop carrier systems shall be of the same manufacture and model. 2.0 Material. 2.1 General Requirements. All materials furnished, assembled, fabricated or installed under this Item shall be in full compliance with Bellcore Technical requirements. All equipment shall be new corrosion resistant and in strict accordance with the details shown on the plans and in these specifications. 2.2 Functional Requirements. The Digital Loop Carrier System equipment shall include but not be limited to the following items: - Digital loop carrier shall include all required channel units to transmit and receive data from the field equipment to the Central Control Center, as shown within the plans. - System shall utilize a 96-Line architecture and shall be capable of rearranging the system by only changing channel units and common plug-in units. - Shall utilize multifunction channel units. - The Craft Interface Unit (CIU) shall permit provisioning and adjusting of channel units from either end of the system. - Local test access through the CIU shall align and test special service channel units. - Diagnostic testing of channel units via an Extended test Controller Kb\s clear channel capability on the digital facility via the Bipolar with Eight Zero Substitution (B8ZS) line coding. - The 96-Line system shall have four (4) DS1 lines. - Digital Loop Carrier System shall be compatible with the Pair

2 Gain Test Controller and other provisioning and testing support systems used with the SLC 96 line system. - System shall also provide ring generators. - Continuously monitor the digital facility and display alarms at the central control center which indicates system status and isolate common system failures to the defective plug-in units. Contact closures for transmitting alarms shall be via "Network Management System". - Feature package shall support single party, multi-party and coin message telephone service. It also shall support 2-wire locally switched special services using SPOTS channel units and DID services using the DID units. The Pair Gain Test Controller shall be used for channel and drop testing. Package shall also include 2-wire and 4-wire non-switched or nonlocally switched special services, digital data service and enhanced testing capabilities. Special service channel units shall be provisioned with a Craft Interface Unit. Enhanced testing capabilities shall be provided by a Extended Test Controller (XTC). The XTC shall allow remote testing of special service channels in addition to providing all of the test capabilities of the Pair Gain Test Controller. - The Four Wire and Digital Data Channel Units shall support such services as PBX tie trunks, private line data and Data Phone Digital Service or as shown on the plans. - All channel units shall be compatible with all external units as shown on the plans and as directed by the Engineer. Contractor shall submit a list of all channel units to the Engineer for approval prior to ordering materials. - No "party lines" shall be permitted. - Digital Loop Carrier System shall not exceed 14 inches of vertical shelf space. - Digital loop carrier shall convert all data to RS232 at the Central Control Center within the unit. 2.3 Channel Capacity. The POTS, SPOTS, Multiparty, DID and E SPOTS channel units shall contain two channels. The 4-wire, dataport, and coin channel units shall be single-channel units. The number of channels in a working system shall vary from 1 to 96, depending on the channel units installed. The different types of channel units shall be mixed without restriction. 2.4 Modular Design. The equipment shall be modular in design such that major portions may be readily replaced in the field. Dust cover shall be placed over unused card slots. Modules of unlike functions shall be mechanically keyed to prevent insertion into the wrong socket or connector

3 All modules and assemblies shall be clearly identified with name, model number, serial number and any other pertinent information required to facilitate equipment maintenance. 2.5 Connectors and Harness. All external connections shall be made by means of connectors. The connectors shall be keyed to preclude improper hookups. All wires to and from the connectors shall be color coded and/or appropriately marked. 3.0 Power Equipment. The Digital Loop Carrier System shall meet all of its' specified requirements when the fiber hub and central control input power is AC power, 60 plus or minus 3 Hz, single phase, 115 plus or minus 20 volts or as approved by the Engineer. The maximum power required shall not exceed 120 watts or as approved by the Engineer. The equipment operations shall not be affected by transient voltages, surges and sags normally experienced on commercial power lines. It is the Contractor's responsibility to check the local power service to determine if any special design is needed for the equipment. Any extra cost, if required, shall be considered subsidiary to the various bid items. 3.1 Primary Input Power Interruption. The equipment shall meet the requirements of section , "transients, power service" of the NEMA standard TS or latest revision. 3.2 Wiring. All wiring shall meet the requirements of the National Electric Code. All wire shall be cut to proper length before assembly. No wire shall be doubled back to take up slack. Wires shall be neatly laced into cable with nylon lacing or plastic straps. Cables shall be secured with clamps. Cable slack shall be provided to facilitate the removal and replacement of assemblies, panels, and modules for maintenance. 3.3 Transient Suppression. All DC relays, solenoids and holding coils shall have diodes across the coils for transient suppression. 3.4 Power Service Protection. The equipment shall contain readily accessible, manually resettable circuit breakers for equipment and power source protection. Circuit breakers or fuses shall be provided and sized such that no wire, component, connection, PC board or assembly shall be subjected to sustained current in excess of their respective design limits upon the failure of any single circuit element or wiring

4 4.0 Maintenance. 4.1 Craft Interface Terminal (CIT). Detailed information and system control shall be obtained via a MS-DOS PC, as described within Special Specification "Network Management Systems". Menu-driven command and prompt modes shall be supplied, with extensive help features. The user friendly screen and the reports shall support provisioning, maintenance, configuration, administration and performance monitoring activities from one centralized location. The PC based CIT shall share commonality with all other multiplexing equipment. The Digital Loop Carrier System shall send alarm messages to the console PC to alert the Administrator to fault conditions. The system shall receive these messages, allowing the Administrator to keep a log of all fault conditions; the messages shall indicate the severity, date, and time of each fault. Alarms shall also generate an audible warning tone. 5.0 Environmental Design Requirements. Comply with Bellcore Digital Loop Carrier or AT&T Subscriber Loop Carrier practices for outside plant operations. The equipment shall meet all its' specified requirements during and after subjecting to any combination of the following conditions: - All equipment shall be environmentally hardened. Ambient temperature range of -40 to 150 F. Relative humidity range up to 95% (without condensation) over the temperature range of -40 to 150 F. 6.0 Warranty. All equipment furnished under this Item shall be guaranteed to perform according to the manufacturer's published specifications. Equipment shall be warranted to the Texas Department of Transportation against the defects and/or failure in design, materials and workmanship in accordance with the manufacturer's standard warranty. Unless otherwise specified in the invitation for bid, warranty coverage shall become effective on the date of final acceptance of the project by the Engineer. Defective equipment shall be repaired or replaced (within 24 hours) at the manufacturer's representative option, during the warranty period at no cost. The manufacturer's representative shall have a locally established service outlet with a minimum of three (3) years previous experience, in the field of high speed multiplexing, prior to award of the contract. Manufacturer shall submit representatives credentials thru the Contractor within 60 working days from awarding of contract. 7.0 Documentation Requirements. Five (5) complete sets of operation and maintenance manuals shall be provided. The manuals shall, as a minimum, include the following: - Complete and accurate schematic diagrams. - Complete installation procedures. - Complete performance specifications (Functional, Electrical, mechanical, and environmental) on the unit

5 - Complete parts list including names of vendors for parts not identified by universal part numbers such as JEDEC, RETMA, of EIA. - Pictorial of components layout on circuit board. (Parts List) - Complete maintenance and trouble-shooting procedures. - Complete stage-by-stage explanation of operational theory and operation. 8.0 Testing Requirements. 8.1 General. 9.0 Training. It is the policy of the Texas Department of Transportation to require performance testing of all materials and equipment not previously tested and approved. If technical data are not considered adequate for approval, samples may be requested for test by the Engineer. The contract period will not be extended for time loss or delays caused by testing prior to final Texas Department of Transportation approval of any items. The equipment referenced to this Item shall be subject to Design Approval Tests and Factory Demonstration Tests at the equipment manufacturer's facility to determine conformance with all the specification requirements except that the Engineer may accept certification by an independent testing laboratory in lieu of the design Approval Tests, to verify that the Design Approval Tests have previously been satisfactorily completed. The Contractor shall arrange for and conduct the tests in accordance with the specification requirements stated herein. Unless otherwise specified, the Contractor is responsible for satisfying all inspection requirements prior to submission for the Texas Department of Transportation inspection and acceptance. The Engineer reserves the right to witness all Design Approval Tests and Factory Demonstration Tests. The results of each test shall be compared with the requirements specified herein. Failure to conform to the requirements of any test shall be counted as a defect, and equipment shall be subject to rejection by the Texas Department of Transportation. Rejected equipment may be offered for retest provided all non-compliances have been corrected and retested by the Contractor and evidence thereof submitted to the Engineer. The Contractor shall conduct a training class (minimum of forty (40) hours) for up to ten (10) representatives designated by the Texas Department of Transportation on procedures of installation, operations, testing, maintenance and repair of all equipment specified within the specification. The contractor shall submit, to the Engineer for approval, ten (10) copies of the training material at least thirty (30) days before the training begins. Training shall be conducted within the local area unless otherwise authorized by the Engineer

6 10.0 Experience Requirements. Contractor's or the designated subcontractor's personnel involved in the installation and testing of Digital Multiplexing Equipment shall meet the requirements set forth in the special provision to Item Measurement. This Item will be measured as each unit furnished, installed, made fully operational and tested in accordance with these special specifications or as directed by the Engineer Payment. The work performed and materials furnished in accordance with this Item and measured as provided under "measurement" will be paid for at the unit price bid for "Digital Loop Carrier System". This price shall include all equipment described under this Item with all cables and connectors; and shall also include the cost of furnishing all labor, software, materials, training, and equipment necessary to complete the work