EXHIBIT 5.1 [RYAN & SUDAN, L.L.P. LETTERHEAD] August 13, 1998 Intelect Communications, Inc. 1100 Executive Drive Richardson, Texas 75081 Re: Registration Statement on Form S-8 ("Registration Statement") of Intelect Communications, Inc. Ladies and Gentlemen: We have acted as counsel to Intelect Communications, Inc., a Delaware corporation (the "Registrant"), with respect to the issuance of this opinion relating to the proposed offering by the Registrant of up to One Million (1,000,000) shares (the "Shares") of the Common Stock of the Registrant, par value $.01 per share (the "Common Stock"), pursuant to the Registrant's Stock Incentive Plan, as amended (the "Plan"). As such counsel, we have examined such corporate records, certificates and other documents and have made such other factual and legal investigations as we have deemed relevant and necessary as the basis for the opinions hereinafter expressed. In such examinations, we have assumed the genuineness of all signatures and the authenticity of all documents submitted to us as originals and the conformity to original documents of all documents submitted to us as conformed or photostatic copies. Based on the foregoing, we are of the opinion that: 1. The issuance by the Registrant of the Shares pursuant to the Plan has been duly authorized by all necessary corporate action on the part of the Registrant. 2. Upon the issuance of the Shares against payment therefor as provided in the Plan, the Shares will be validly issued, fully paid and non-assessable. We hereby consent to the filing of this opinion as an exhibit to the Registration Statement. Very truly yours, RYAN & SUDAN, L.L.P.