Telephone signaling system link the variety of switching systems, transmission systems and subscriber equipments in a telecommunication network to enable the network as a while. The below signaling systems are involved in telephone network.
- Subscriber loop signaling
- Intraexchange or register signaling
- Interexchange or interregister signaling
In a telephone network, subscriber loop signaling depends upon the type of telephone instrument used. Multifrequency signaling has brought about new services like data-in-voice-answer, which fall in the class of user-to-user signaling facilities. Such facilities are more common in the context of data communication and integrated services.
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