In a DTMF (Dual-tone multi-frequency) Phone, digits are represented by – McqOptions

MCQOPTIONS

1.	In a DTMF (Dual-tone multi-frequency) Phone, digits are represented by:
A.	Orthogonal frequencies
B.	Orthogonal phases
C.	Orthogonal codes
D.	Orthogonal pulses
Answer» B. Orthogonal phases

Discussion

No Comment Found

Related MCQs

A linear Hamming code is used to map 4-bit messages to 7-bit code words. The encoder mapping is linear. If the message 0001 is mapped to the code word 0000111, and the message 0011 is mapped to the code word 1100110, then the message 0010 is mapped to
CDMA is:
GPRS stands for
Identify the advantages of 2G from below
In a DTMF (Dual-tone multi-frequency) Phone, digits are represented by:
A signal m1(t) is band limited to 3.6 kHz and the three other signals m2(t), m3(t) and m4(t) are band limited to 1.2 kHz each, and these signals are transmitted by means of TDM. Then, what will be the transmission bandwidth of channel.
All CDMA based technologies 2G and 3G have
If one of the code words of a Hamming (7, 4) code is 0001011, which of the following cannot be the valid codeword in the same group?
In a CDMA system, there are 32 simultaneous users in the system. Find the number of different codes used.
Blocked calls may be handled in one of the two ways. First blocked calls can be put in a queue awaiting a free channel. This is termed as