EXHIBIT 23 CONSENT OF INDEPENDENT ACCOUNTANTS We consent to the incorporation by reference in the registration statements of Newbridge Networks Corporation (the "Company") on Form S-8 (File Nos. 33-51538, 33-55964, 33-68710, 33-78276, 33-89624, 33-97472, 333-2446, 333-30777, 333- 86669, 333-86671, and 333-86683) of our report dated June 1, 1999, except Note 23 which is as of June 22, 1999, included herein, on our audit of the consolidated financial statements of the Company, which are included in this Amendment dated October 1, 1999 to its Annual Report on Form 10-K, as included in Item 8 herein. /s/ Deloitte and Touche LLP Deloitte & Touche Chartered Accountants October 1, 1999 Ottawa, Canada