: a telephone line that directly connects two or more private branch exchanges
Examples of tie-line in a Sentence
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What’s more, Japan has 10 independent power generation companies whose grid tie-line capacities vary greatly.
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IEEE Spectrum, 13 Sep. 2016
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IEEE Spectrum, 13 Sep. 2016
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“Tie-line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tie-line. Accessed 23 Jul. 2025.
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