Which issue causes slips on a PRI?
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A. B. C. D.A.
PRI (Primary Rate Interface) is a digital telecommunications interface standard used to deliver voice and data services over T1/E1 lines. In a PRI, the data is sent in time slots, and any misalignment between the sending and receiving ends can result in slips. Slips occur when a received bit is not aligned correctly in its time slot.
Out of the given options, the most likely cause of slips on a PRI is an incorrect clock source. Clocking is critical to ensuring that data is sent and received at the correct rate. If the sending and receiving devices are not synchronized to the same clock source, there can be timing mismatches, resulting in slips. The clock source for a PRI can be internal or external, depending on the configuration.
Incorrect encapsulation is unlikely to cause slips on a PRI. Encapsulation refers to the way data is packaged for transmission over a network. If the encapsulation is incorrect, it could cause other issues, but slips are not typically one of them.
Incorrectly configured time zone could potentially cause issues with time stamping, but it is also unlikely to cause slips on a PRI.
A change in the line code could potentially cause slips on a PRI. Line code refers to the way data is encoded for transmission over a physical medium. If the line code changes, it could potentially cause timing mismatches, resulting in slips. However, this is less likely to occur than an issue with clocking.
In summary, the most likely cause of slips on a PRI is an incorrect clock source.