What is the difference between ISDN BRI and PRI?

BRI and PRI are both ISDN (Integrated Service Digital Network). BRI is an abbreviation for Basic Rate Interface. It is intended for use by subscribers of the line. It is the entry-level service as it provides the lowest level performance.

Only 2 B channels and D channel is used in BRI PRI stands for Primary Rate Interface; it is similar to BRI except for minor differences. PRI is a superior service as it is the major level service. It is a lot faster than BRI. The number of channels used in PRI varies.

It should be remembered that these two are ISDN, and it is evident that these are used to transmit data through telephones. The first difference is their meanings. BRI stands for Basic Rate Interface while PRI stands for Primary Rate Interface. Another difference which is considered to be their main difference is the type of service that they can offer. BRI uses two channels with one up and the other one down.

The service that this can offer is, but the price of the BRI is lower as compared to the PRI, which can provide more advanced features that may be needed at present. Aside from these details, these two are not much different from each other.