The term "Signal-to-C-Notched Noise Ratio" denotes the ratio in dB of a test signal to the corresponding C-Notched Noise.

At a specified point in a circuit, the ratio of the power of the wanted signal to the power of the unwanted signal from another channel.
Note 1: The signals are adjusted in each channel so that they are of equal power at the zero transmission level point in their respective channels.
Note 2: The signal-to-crosstalk ratio is usually expressed… (Read More →)

The ratio of the amplitude of the desired signal to the amplitude of noise signals at a given point in time. [JP1]
Note 1: SNR is expressed as 20 times the logarithm of the amplitude ratio, or 10 times the logarithm of the power ratio.
Note 2: SNR is usually expressed in dB and in terms of peak values for… (Read More →)

The ratio given by Eb/N0, where Eb is the signal energy per bit and N0 is the noise energy per hertz of noise bandwidth.

1. The use of signals for controlling communications.
2. In a telecommunications network, the information exchange concerning the establishment and control of a connection and the management of the network, in contrast to user information transfer.
3. The sending of a signal from the transmitting end of a circuit to inform a user at the receiving end that a message… (Read More →)

A data channel in combination with its associated signaling terminal equipment. [T1.226-1992]

1. A component part of SS7 protocol that provides additional functions to the message transfer part (MTP) to provide for Connectionless and Connection Oriented network services to transfer signaling information between exchanges and specialized centers in telecommunication networks. The combination of the MTP and the SCCP is called Network Service part. [T1.235-1993]
2. The part of SS7 that provides additional… (Read More →)

A combination of two data channels operating together in a single signaling system. [T1.226-1992]

A signaling point to which a message is destined. [T1.226-1992]

1. A signaling point that can send or receive SS7 messages, and has no message transfer function. [T1.235-1993]
2. A signaling point with the ability to source or sink network service part user data and considered exclusively from the viewpoint of the source or sink. [T1.110-1987]