• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print
INTEGRATED VOICE COMMUNICATIONS SYSTEM (IVCS) - 12018_128
ANNOUNCING AND INTERCOMMUNICATION SYSTEMS

Basic Military Requirements (BMR) - Requirement for military advancement
Page Navigation
  108    109    110    111    112  113  114    115    116    117    118  
The  IVCS  is  an  integrated  communications system that solves some of the shortcomings of older systems installed on older ships. IVCS combines the f e a t u r e s   o f   s o u n d - p ow e r e d   t e l e p h o n e s ,   d i a l telephones, and intercommunications units into one system.  The  IVCS  also  can  interface  with  other shipboard  communications  systems.  The  system c o n s i s t s   o f   t e r m i n a l s   ( u s e r   a c c e s s   d ev i c e s ) , accessories,  and  two  computer-controlled  Interior Communications Switching Centers (ICSCs). NOTE Whenever IVCS are installed, sound-powered telephone circuits are designated as secondary communications circuits. TERMINAL DEVICES Two types of terminal devices (network terminal and dial terminal) are used with the IVCS. The type of terminal and the way it is connected into the system determines the type of service that is provided to you the user. Network Terminal The network terminal (fig. 4-8) provides service comparable  to  that  provided  by  sound-powered telephone  systems.  By  depressing  one  of  the  five numbered push buttons, you’re connected to any one of four networks. Each network circuit is also connected to one of the ICSCs. The network circuits are manned for certain shipboard operations, similar to sound-powered telephones. Dial Terminal The dial terminal provides services that can be most easily compared to that provided by a dial telephone system. The dial telephones terminals (fig. 4-9) are connected  to  ICSCs.  They  are  used  similar  to  a commercial dial telephone with push-button dialing. Terminal Accessories There are several types of accessories designed for use  with  the  dial  and  network  terminals.  These accessories  include  headsets,  handsets,  spray-tight enclosures that permit the installation of the terminals in exposed areas, and loud speaker units. The loudspeaker units (fig. 4-10) are designed for use with either the dial or network terminals. Both units are equipped with press-to-talk switches. Additionally, by depressing the hands-free push switch on the unit, the operator can communicate without using the press-to-talk switch. This permits you to communicate without a handset or headset. INTERIOR COMMUNICATIONS SWITCHING CENTER (ICSC) The ICSCs are the heart of the IVCS. They perform the switching actions necessary to connect the calling party  to  the  called  party,  similar  to  the  automatic switchboards of a dial telephone system. Figure 4-11 shows the relationship between ICSC and the IVCS. REVIEW 5 QUESTIONS Q1.  List the terminal devices used with IVCS. a. b. Q2.  What  is  the  purpose  of  the  ICSC  within  the IVCS? COMMUNICATIONS SECURITY Learning Objective: When you finish this chapter, you will be able to— Identify  basic  communications  security procedures. Communications  security is  defined  as  the protective measures taken to deny unauthorized persons information derived from telecommunications of the United States government that are related to national security  and  to  ensure  the  authenticity  of  each telecommunication. 4-12 Student Notes:







Western Governors University

Privacy Statement
Press Release
Contact

© Copyright Integrated Publishing, Inc.. All Rights Reserved. Design by Strategico.