Tag: PRI
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Resolving Call Drops After a Network Upgrade: A MiVoice Business Case Study
Recently I was called to look at a MiVoice Business installation that experienced an unexpected issue after a network upgrade: calls were suddenly being dropped, and the system showed as unavailable. The culprit? A small but significant change made by the carrier—they mistakenly switched the PRI protocol from DMS100 to NI2 during the upgrade. This…
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Understanding and Creating a PRI Crossover Cable: A Step-by-Step Guide
In telecommunications, Primary Rate Interface (PRI) is a standard for carrying multiple voice and data transmissions between a network and a PBX (Private Branch Exchange). When setting up a PRI connection between two pieces of equipment, such as two PBX systems or a PBX and a network interface device, a PRI crossover cable is often…
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T1 and PRI Troubleshooting and Fun At Layers 1 and 2
Believe it or not in 2021 T1 lines are still fairly common in many enterprise and rural settings. T1s can be used for both voice and data, the most common circuit these days is a PRI for voice. I’ve found support for these circuits are often non-existent at the lower levels of carrier and vendor…
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