EXHIBIT 23.5 [LETTERHEAD OF DELOITTE & TOUCHE LLP] INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in this Registration Statement of Newbridge Networks Corporation on Form S-4 of our report dated June 1, 1999, except as to Note 23 which is as of June 22, 1999, appearing in the Annual Report on Form 10-K/A of the Company for the years ended May 2, 1999, and to the reference to us under the heading "Experts" in the Proxy Statement/Prospectus, which is part of this Registration Statement. /s/ DELOITTE & TOUCHE LLP DELOITTE & TOUCHE LLP October 8, 1999