EX-23 4 ex23.txt EXHIBIT 23 CONSENT OF INDEPENDENT AUDITORS We consent to the incorporation by reference in the Registration Statements (Form S-8 Nos. 33-44337, 333-17613, 333-68767, 333-93735, 333-44002, and 333-68208) of CTC Communications Group, Inc. of our report dated February 15, 2002, except for Note 6 and the last paragraph of Note 7, as to which the date is March 6, 2002, with respect to the consolidated financial statements and schedule of CTC Communications Group, Inc. included in the Annual Report (Form 10-K) for the year ended December 31, 2001. /s/ Ernst & Young LLP Boston, Massachusetts March 27, 2002