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Explore the operational procedures, maintenance tasks, and system integration of the MarCom IVCS. Learn about its primary functions, characteristics, and modular design with redundancy features for enhanced reliability. Discover the various terminals, abbreviations, and terms associated with the system.
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Welcome toMarCom Integrated Voice Communication SystemCourse # A-623-0022NEC IC-4713
Course Learning Objectives 1. Describe the theory & associated documentation necessary to support and understand Operation, Preventive & Corrective Maintenance of MarCom. 2. Perform authorized operational procedures on the MarCom. 3. Perform preventive maintenance procedures on the MarCom. 4. Perform documented fault isolation and repair procedures to the authorized maintenance level on the MarCom.
Section 1, Topic 1General, Physical & Document Description of MarCom IVCS
Topic Learning Objectives 1. State the purpose of the MarCom. • Describe the organization, content, & use of the technical documentation. • Define the abbreviations and terms. • State the operational characteristics and capabilities of MarCom. • Describe the units of MarCom.
Purpose of MarCom MarCom IVCS primary function is to provide reliable voice-to-voice communication. MarCom IVCS is a processor controlled, solid-state communications system designed for shipboard use. MarCom IVCS fulfills all the functions typically performed by separate voice systems, including: • Intercoms, • Internal voice nets, • Interphone, • All conference services.
MarCom Characteristics/Capabilities • Modular in design, consisting of ruggedized COTS equipment. • Redundancy enhances survivability & reliability: - Two switching centers - Redundant processors & power supplies - Power supplies backed up by batteries • Interfaces with external circuits: - Sound Powered Telephone Nets - Public Address System - Shore Lines - Command & Control Circuits • Designed to be non-blocking
Characteristics/Capabilities MarCom is an Integrated Services Digital Network (ISDN). Enhancements include efficient support for: - Large scale netting - Conferencing - Users who need to simultaneously communicate on multiple circuits or nets while actively monitoring them all. - Provisions for handling classified voice traffic
MarCom Characteristics/Capabilities • Three types of terminals: • ISDN Dial Terminals MT-866i MT-997i i2021 i2022 STE C3IT • Analog Dial Terminals POTS 6221 MDT • Net Terminals NET JACKBOXES TA-1002 / TA-1002A / TA-1002AR
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Abbreviations & Terms • BITE - Built In Test Equipment • BRI - Basic Rate Interface • C3IT - Configurable Command & Control Integrated Terminal • CC - Common Controller CCA • CCA - Circuit Card Assembly • COS/CM - Class of Service/Classmark • COTS - Commercial Off The Shelf • CSC - Communication System Control • DTMF - Dual-Tone Multiple Frequency • ESDS - Electrostatic Discharge Sensitive
Abbreviations & Terms • HDLC - High-Level Data Link Control • IADS - Integrated Audio Distribution System • ICSC - Interior Communications Switching Center • ISDN - Integrated Services Digital Network • IVCS - Integrated Voice Communication System • LRU - Lowest Replaceable Unit • MDF - Main Distribution Frame • NT - Network Termination • PIF - POTS Interface • POTS - Plain Old Telephone System • PWA - Printed Wiring Assembly
Abbreviations & Terms • RX/TX - Receive Bus / Transmit Bus • SAT - System Administration Terminal • SCC - Switching Control Console • SPID - Service Profile ID • SPS - System Power Supply • STIF - BRI S/T Interface Circuit • TCL - Terminal Configuration List • TIF - Trunk Interface Circuit • B Channel - Bearer Channel • D Channel - Data Channel
REAR FRONT Typical Backplane Arrangement (Top View) Rear View 1A2 NT Assembly
Rear Front Switch Backplane Arrangement (Top View) Switch Rear View
SPS Circuit Breaker Panel SPS Rear Panel Connections
LPD ETHERNET DRAWER 1A1 S4209-1-1-25
ISE SWITCH ASSEMBLIES S4209-1-1-26
Printer System Administration Terminal (SAT)
SAT/PRINTER/BATTERY RACK S4209-1-1-31
Dual Homing Capability When C3IT detects loss of signal or power from primary ICSC, C3IT automatically switches to secondary ICSC for signal or power. C3IT provides +12 VDC and +24 VDC for use by accessories via J2. LS-1010 Loudspeaker Configurable Command & Control Integrated Terminal (C3IT)
Directory Panel J1 ISDN Telephone Terminal, MT-866i
EMI Jackbox Terminal TA-1002A (NJA) Recessed Jackbox TA-1002AR (NJAR)
COTS ISDN Voice and Data Terminal, i2022 S4209-1-1-39
Secure Telephone Equipment (STE) S4209-1-1-40
Mobile Dial Terminal (MDT) S4209-1-1-41