Details Title: 3C2X1 Block III Description: Network Integration Apprentice Course - Multiplexing Theory & Circuit Actions Total Flash Cards: 122 Created: 07/12/2009 12:36:15		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Computer Science Flashcards
Cards in this set: Term What is a Trunk? Definition A multiplexer combines several channels into a serial data stream (aggregate) that is called a trunk. Term End-to-End Concept Definition The entire path the signal has to travel trhough, including all equipment in order to get from the sender at once station to the receiver at the distant end. Term What is the the purpose of a CCSD? Definition To differentiate one particular circuit from another to eliminate guesswork and confusion. Term What are the three types of CCSDs? Definition Permanent Spare Temporary Term Who assigns Permanent CCSDs? Definition DISA (Defense Information Systems Agency) Term Which DISAC provides information on how a CCSD is constructed? Definition DISAC 310-65-1 Term How many characters does a Permanent CCSD consist of? Definition Eight (8) Term No two permanent circuits will have the same _________ Definition Last Four Term The 5th through 8th place in a Permanent CCSD identifies what? Definition The Individual Circuit (Last 4) Term Which CCSD is assigned to a channel that does not carry an active circuit? Definition A Spare CCSD Term What are the two sub-categories of a Spare CCSD? Definition DSOVSSSS DSOASSSS Term What is DSOVSSSS? Definition All Audio (VF) Spares Term What is DSOASSSS? Definition All Digital (DC) Spares Term Which CCSD is created when a user requests a service that does not warrant a permanent circuit? Definition Temporary CCSD Term Permission from DISA is required if a temporary circuit is needed for more than _____ Definition Seven (7) Days Term Which DISAC defines how to construct a temporary CCSD? Definition DISAC 310-65-1 Term JT7NPAMM is an example of what type of CCSD? Definition Temporary CSSD Term Which CCSD's 5th position is always a 'P'? Definition Temporary CCSD Term The "Last Four" on a Temporary CCSD are always _____ Definition Letters Term The 7th and 8th position of a Temporary CCSD indicate what? Definition The precendence (priority) Term What are the Precedence Levels of a Temporary CCSD? Definition Precedence Code Restoration Priority Flash FL 1 Immediate MM 2 Priority PR 3 Routine RT 0 or N/A Term Which DISAC provides information on Trunk Identifiers? Definition DISAC 310-65-1 Term A six (6) character code is created for use as a ____ identifier. Definition Trunk Term The first position of a Trunk Identifier is... Definition The geographical area the trunk is from Term The 5th and 6th position of a Trunk Identifier are for? Definition Individual trunk identification Term The 2nd position of a Trunk Identifier is for... Definition The geographical area to Term What is the purpose of a TSP? Definition Allow users of our nation's most important telecommunications services of the National Security and Emergency Preparedness system to receive treatment on a priority basis. Term What is a TSP? Definition Telecommunications Service Priroties is a circuit assignment used to determine the importance or precedence for provisioning or restoring telecommunication services. Term From who do users obtain TSP assignments from? Definition The National Communications System TSP Program Office (NCSTSPPO) Term The process of providing telecommunications service to a user is called _______ Definition Provisioning Term The process of returning a defective circuit back to operation through either repair or alternate routing. Definition Restoration Term ______ involves appropriating a circuit of lesser importance to allow a higher priority user to communicate. Definition Preempting (PREEMPT) Term The TSP Authorization code has what two parts? Definition TSP Control Identifier (TSP Control ID) & TSP Code Term A computer generated ID for TSP tracking purposes. Definition TSP Control ID Term The 1st through 8th positions of a TSP Code is the _______ Definition TSP Control ID Term What is the TSP Code used for? Definition To assign the priority for provisioning and restoration purposes. Term E, 1, 2, 3, 4, 5, and 0 are acceptable values for what? Definition The Provisioning priority field of a TSP Code Term What is the highest Provisioning Priority in a TSP Code? Definition E Term 1, 2, 3, 4, 5, and 0 are the only acceptable values of what part of a TSP Code? Definition The Restoration priority field in a TSP Code Term Do trunks use priorities and why/why not? Definition No. A trunk is always more important than a single circuit. Term Is TSP12345C-0E an acceptable TSP Code? Definition No. The final position's accepted values are only 1, 2, 3, 4, 5, and 0. Term Which is more important, a Priority 1 Circuit or a Priority 5? Definition Priority 1 circuits are most important, priority 5 is least important. Term AF Form 3215 is used for what? Definition Document a users request for C4 Systems. The form documents the users requirements and justification for the request. Term The user brings a AF Form 3215 to who? Definition Their local Technical Control Facility (TCF) Term The TCF turns an AF Form 3215 into ____ Definition Telecommunications Request (TR) Term A Telecommunications Request (TR) is forwarded by the TCF to whom? Definition Telecommunication Certification Office (TCO) at the users MAJCOM. Term After validated the TCO prepares a _______ from the TR. Definition Telecommunications Service Request (TSR) Term The TCO sends the TSR to whom? Definition DISA Term Who is the only office permitted to send a TSR to DISA? Definition The TCO Term DISA prepares a ________ from the TSR. Definition Telecommunications Service Order (TSO) Term Who is the only organization authorized to negotiate contracts for commercial telecommunication services? Definition Defense Information Technology Contracting Organization (DITCO) Term What is sent from DITCO to a TCF regarding the status of an order? Definition Status Acquisition Message (SAM) Term What is a PSA? Definition An Agreement between the customer, commercial provisioning team, and other base support services that outlines the services and responsibilities of each party. Term Describes equipment to be installed, sites ofinstal greed upon, supporting construction, and service required. Definition A Project Support Agreement (PSA) Term An agreement between the user, communication squadron, and base support facilitiesthat outlines the part responsibility after system has been installed and become operational. Definition Service Level Agreement (SLA) Term DISA's online method for requesting services is called? Definition DISA Direct Term What is now the preferred method of submitting telecommunication requests? Definition DISA Direct Term What is DD Form 1441 and its primary purpose? Definition Circuit Data Card used to assist in troubleshooting and restoring circuits Term Who fills out a DD Form 1441 and where is the information taken from? Definition The CANCO fills out a 1441 using the TSO Term The front side of a DD 1441 contains what information? Definition Technical and historical information about the circuit for use in isolating problems on that circuit. Term The backside of a DD 1441 contains what information? Definition The backside of the form has a simple block diagram showing how the circuit is configured within your facility. Term What is a DD Form 1443 and its purpose? Definition Outage and Restoration Record to keep a record of all circuit, trunk, link, equipment, or facility outages within a TCF. Term How long must a DD 1443 be maintained? Definition For 90 days after the end of each month. Term What is DD Form 1697 and 1697-1 and their purposes? Definition Circuit Parameter Test Data records the result of circuit quality control tests. Term What is the difference between DD 1697 and 1697-1? Definition DD 1697 is for Analog circuits while 1697-1 is for Digital circuits Term How long must a DD 1697 be kept for? Definition The initial one is kept for life of circuit while previous periodic ones are discarded. Term What is DD Form 1753 and its purpose? Definition The Master Station Log is the official narrative record of a TCF describing such things as significant events, shift/watch changes, outages, etc. Term You initate a MSL at the start of each what? Definition RADAY Term A RADAY is short for _______ _____ and is from _____ to _______ Definition Radio Day and is from 0001Z to 2359Z Term How long is an MSL maintained for? Definition Maintained for 11 months after the end of each month. Term Zulu time is another name for what time zone? Definition Greenwich Mean Time (GMT) Term The purpose of a TCF's reports is to what? Definition To inform higher levels in their reporting chain of significant events affecting their facility. Term A narrative report of activities or problems that must be reported immediately to DISA. Definition Non-formatted Reports Term How soon should you report a non-formatted report? Definition within 10 minutes or asap Term A typed message that provides outage information used for computer-assisted historical analysis. Definition Formatted Reports Term We sometimes refer to these as 55-1 reports. Definition Formatted Reports Term By what time and frequency should you submit a formatted report? Definition Atleast one before 2400Z for each RADAY Term What are the 3 types of completion reports? Definition in-effect, delayed service, exception Term In-effect reports are submitted when? Definition Service meets all details of TSO, operating end-to-end as specified and meets all parameters of the technical schedule. Term An in-effect report must be submitted within how many hours after activation? Definition 72 hours Term Commercial/Government delays or a failed parameter test causes what type of completion report? Definition Delayed Service Report Term DISA must be notified by phone of the reason for a delayed service and expects a report to be filled out within how many hours? Definition 72 hours Term What is an Exception Report? Definition Does not meet the technical parameters but its close enough for the customer to pass their information Term How often must you submit follow up reports on an Exception Report until it is cleared? Definition Every 30 days Term What can be found in a Circuit History Folder? Definition Copy of the TSO, PSA, completion reports and initial test and acceptance 1697 or 1697-1 Term Which method of multiplexing is used by the military? Definition Time Division Multiplexing (TDM) Term How many channels can be sampled at one time in TDM? Definition One at a time Term How many frames does the multiplexer generate per second? Definition 8000 Term What is the rate of DS-1? Definition 1.544MB/s Term If the user's digital signal is less than 64kb/s what is added on? Definition Stuff bits Term How many channels is a 1st level frame for DS-1? Definition 24 channels Term Who uses DS-1? Definition USA, Canada, Japan Term What is the bit rate of E-1 and how many channels does it use? Definition 2.048MB/s with 32 channel frames Term A D4 Super frame is how many 1st level frames? Definition 12 sequential 1st level frames Term Extended Super Frame (ESF) uses how many 1st level frames? Definition 24 1st level frames Term What level multiplexer is considered of user level? Definition 1st level multiplexer Term 2nd Level Multiplexer Definition When many first level multiplexers are going to the same distant end they are multiplexed together to form 2nd level multiplexing. Term All third level multiplexers begin with what letter? Definition M Term An M12 has multiple inputs of what type? What is its output? Definition Multiple DS-1 inputs with a DS-2 output Term Timing Definition The regular rhythmic reoccurence of a clocking pulse at a predetermined rate Term Synchronization Definition Provides a repeating frame bit sequence that allows the receiving multiplexer to determine where in the bit stream it is at any given time. Term Bad timing with Digital Data can cause what? Definition Deletion or repetition of data and Possible miss-framing Term Bad timing with Video can cause what? Definition Freeze frame for several seconds or clicking sound on audio Term Bad timing with audio can cause what? Definition A clicking sound Term What are the two types of station clocks? Definition Master and Slave Term It is considered a timing error to have two _________ Definition master station clocks on one timing network Term What are the two types of general timing sources? Definition Internal and External Term Internal Timing Source would be? Definition built-in oscillator Term External Timing Source would be? Definition Atomic Clocks, GPS, recovered timing Term Can a crystal oscillator act as a primary timing source? Definition Yes though they are usually enhanced with external timing Term Phase-locked-loop Definition A slave clock uses an external reference frequency to increase the accuracy of its internal crystal oscillator Term What are the two types of Atomic Clocks used by the military? Definition Cesium and Rubidium Term Which Atomic Clock is more accurate of the two used by the military? Definition Cesium Term Which Atomic Clock is more likely to be used in a tactical situation? Definition Rubidium Term The GPS system consists of how many active satellites? Definition 24 Term Who manages the military GPS? Definition Shriever AFB Colorado Term Recovered Timing Definition Develops timing from transitions in a receive data stream Term One's Density Rule Definition There must be at least three 1s in every 24 bits and no more than 15 consecutive 0s in a data stream Term Bipolar 8 Zero Substitution (B8ZS) Definition Process to ensure a bit stream retains the One's Density Rule Term What are the modules of a FCC-100? Definition Processor Module, Mux/Demux Module, Aggregate Module, Port Carrier Module, Front Panel Interface Term Loopbacks Definition Used to assist in troubleshooting and diagnostic purposes Term Loopbacks are either... Definition Internal, External