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Can the Cisco 2900 LRE XL switch with a Cisco 48 LRE POTS splitter work with a digital PBX?

April 26, 2017Cisco digital LRE pots splitter Switch XL

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Can the Cisco 2900 LRE XL switch with a Cisco 48 LRE POTS splitter work with a digital PBX?

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A. The LRE POTS will work with a digital PBX if you stay within the pass band. The pass band for the POTS ports is 10-700 kHz; the stop band is 900 kHz – 7.9 MHz. The LRE POTS will work with all key systems phones as long as they use a frequency below 700 kHz.