No, because as long as the sampling rate of the highest frequency in the intelligence signal is adequate, the size and frequency of the original waveform can be regenerated.

A TDM system must be able to handle the fundamental frequency and all the upper and lower harmonics produced during the modulating process.

By employing pulse-coding techniques and filtering the transmit signal.

By use of synchronization or marker pulses in the bit stream.

TDM combines signals so that can share a single line, while TSI switches information from one data stream to another.

TSI allows connections to be made at channel level, giving systems controllers the ability to rout and test individual circuits.

PCM frames enter the TSI uit and are written to memory. The information about where they are to be routed is also written to memory. When the proper time slot on the outgoing data stream comes up, the frame is read out of memory into that slot.

Multiple TSI units are connected to a space division switch, physically routing data from one TSI unit to another; no time slots are intercharged in the space switch. This type of configuration is used in large switching systems.

(1) STDM.

(2) ATDM statistical (Stat-Mux).

Statistical multiplexing periodically redefines the length of frames to change the number of time slots, thereby, changing its number of channels. STDM permanently assigns time slots for its channels.

STDM transmits dummy characters on inactive time slots where Stat-Mux assigns tome slots only for active channels.

By sampling the input signal at a high enough rate

The formatting of TDM pulse streams into frames.

A longer framing pattern because of its ability to maintain synchronization without giving a false pattern.

The longer the framing pattern, the more the information rate is decreased.

(1) Asynchronous

(2) Synchronous

(3) Isochronous

Timing differences arising from (1) slight variation in operating rates at the two ends of the circuit, and (2) variations in propagation delay over the circuit.

Master clocks, synchronous pulses, and pulse stuffing.

The processor, mux/demux, aggregate, port carrier, and front panel interface modules.

The mux/demux module accomplishes the mux/demux of data between the aggregate and ports.

The aggregate module transfers data between the local AN/FCC-100 (V) 9 internal high-speed data bus and the transmission path to the remote AN/FCC-100 (V) 9 unit.

Data rate of

Low Speed Driver

1.2 kbps to 384 kbps

Data Rate of

RS-422-A/423-A driver

Rates up to 2048 kbps

Data rate of

T-CDI low speed driver

16k, 32k, and 64 kbps

Data rate of

T-CDI high speed driver

72k, 128k, 144k, 256k, 288k, 512k, 576k, 1024k and 2048 kbps

Each port carrier module provides the interface and termination capability for two pieces of DTE and is designed to accept four plug-in sub-modules, interfacing the DTEs to the multiplexer. This allows the AN/FCC-100 (V) 9/9X to accept any of two interface sub-modules, including a daughter card, and four digital or two analog (2 write and 4 wire) types of informational formats.

(1) NRZ

(2) Diphase

(3) Voice

(1) Synchronous

(2) Asynchronous

(3) Isochronous

(4) CDI

(1) CVSD

(2) PCM

(3) ADPCM

(1) T-CDI Low Speed

(2) T-CDI High Speed

(1) PCM

(2) CELP

(3) STU III

(4) LD-CELP Secure

Describe the interface module.

The technology of WDM is considered a method of improving the efficiency of fiber through condensing, or multiplexing, the transmitted channels.

In WDM, each device connected to the WDM is given a different wavelength of light or different color in the spectrum that allows the device to pass together across the fiber within the same area of light spectrum.

First it must be very stable over time and temperature; second, it needs to have a relatively flat passband or region frequencies; and third, it must reject adjacent optical channels so that they do not interfere.