Narrowband is a voice-grade transmission channel capable of transmitting a maximum of 56,000 bps.
Narrowband is known to be a term that connote the data communication and telecommunications tools, technologies as well as services that make use of a narrower set or band of frequencies in any form of communication channel.
Note that Narrowband is a voice-grade transmission channel capable of transmitting a maximum of 56,000 bps and as such, it is said to be so due to a limited rate of info that can be transferred in a given period of time.
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