Voice Systems Fundamentals Flashcards
The process of condensation occurs when air particles are
pressurized causing them to move closer together.
In hertz (Hz), what range of sound can the human ear detect?
20 to 20,000.
The loudness of a sound is closely related to what part of the sine wave?
Amplitude.
Noise may be introduced into speech signals by thermal agitation and
black body radiation.
In hertz (Hz), what is the actual voice frequency band?
300 to 3,400.
Which models of end offices in the Digital Multiplex System (DMS) family are commonly
used at Air Force bases to provide base telephone services?
DMS–100 and Meridian System Logic (MSL)–100.
Which model of Digital Multiplex System (DMS)–100 family switches is installed in
compact modular cabinets?
Meridian System Logic (MSL)–100.
What is the maximum number of ports that a Meridian System Logic (MSL)–100 will
support?
30,000.
Which type link is normally used to interconnect two peripheral modules (PM) in the Digital Multiplex System (DMS)?
DS–30A.
What major area is connected to the central side (C-side) of a network module (NM) in the
Digital Multiplex System (DMS)?
Central control.
What is the mounting bracket called on which transmission or switching equipment is
mounted in a Digital Multiplex System (DMS)?
Bay.
What contains bays of the same functional equipment?
Frame.
Which Digital Multiplex System (DMS) component uses 16–bit Motorola 68000 or 8bit
Intel microprocessors?
A peripheral module’s (PM) peripheral processor (PP).
How many channels of data does each digital signal (DS) 30 speech link carry?
32.
Up to how many duplicated digital signals (DS)–30 links are used to connect a line group
controller (LGC) to the network module (NM)?
16.
What type of digital signal (DS) links are used to connect the Digital Multiplex System
(DMS)-Core and the DMS-Bus?
512.
How many inter message switch links (IMSL) can be configured in a SuperNode?
2.
Where are the system clocks located within the SuperNode?
Digital Multiplex System (DMS)-Bus.
What type of digital signal (DS) protocol is used as a message carrier between the Digital Multiplex System (DMS)-Bus and the network modules (NM) and input/output controller (IOC)?
512.
Where are the DMS-Core and DMS-Bus housed?
Dual plane combined core (DPCC).
What is the first step in the pulse code modulation (PCM) process?
The analog signal is band-limited.
In the pulse code modulation (PCM) process, changing the quantized samples into a binary
word is called
encoding.
What is a method of putting many users on a single cable pair?
Time division multiplexing.
In the time division multiplexing (TDM) process, the rate of sampling must be equal to
the highest frequency sampled multiplied by the sampling rate per cycle.