EX-23.1 9 rbbn-20251231xex23d1.htm EX-23.1

EXHIBIT 23.1

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CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

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We consent to the incorporation by reference in Registration Statement Nos. 333-267415 and 333-271117 on Form S-3 and Registration Statement Nos. 333-221240, 333-226624, 333-232946, 333-238888, 333-266412, 333-282856, 333-288488, and 333-292053 on Form S-8 of our reports dated February 26, 2026, relating to the financial statements of Ribbon Communications Inc. and the effectiveness of Ribbon Communications Inc.’s internal control over financial reporting, appearing in this Annual Report on Form 10-K of Ribbon Communications Inc. for the year ended December 31, 2025.

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/s/ Deloitte & Touche LLP

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Dallas, Texas

February 26, 2026