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Baseband

PRI

PRL

The connection between a mobile device and radio tower

The chip that controls the radio frequency waves within a device

A list of radio frequencies

Base band : A list of radio frequencies

PRI : The chip that controls the radio frequency waves within a device

PRL: The connection between a mobile device and radio tower

Explanation:

Base-band is the range or band of frequencies. It contains a number of between upper and lower limit of the frequency. For example if the range of transmission of the signal is 2khz to 3khz. The frequencies between this range are called base band.

PRI is the chip that is used to control the different frequencies received at the device. This chip control the radio frequencies that are allowed to the devices. It is the short form of primary rate interface.

PRL is the list named as Preferred Roaming List. It has stored the information of the mobile devices that are connected to the mobile phone. This list is used while communicating between mobile device and tower.