Exhibit 3.1

AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

OF

TELULAR CORPORATION

ARTICLE ONE

The name of the corporation is Telular Corporation (hereinafter called the “Corporation”).

ARTICLE TWO

The address of the Corporation’s registered office is located at 2711 Centerville Road, Suite 400, in the City of Wilmington, in the County of New Castle, in the State of Delaware 19808. The name of its registered agent at such address is Corporation Service Company.

ARTICLE THREE

The purpose of the Corporation is to engage in any lawful act or activity for which corporations may be organized under the General Corporation Law of Delaware (the “DGCL”).

ARTICLE FOUR

The total number of shares which the Corporation shall have the authority to issue is one thousand (1,000) shares, all of which shall be shares of common stock, with a par value of one cent ($0.01) per share.

ARTICLE FIVE

The board of directors of the Corporation (the “Board of Directors”) shall have the power to adopt, amend or repeal By-Laws, except as may otherwise be provided in the By-Laws.

ARTICLE SIX

The Corporation expressly elects not to be governed by Section 203 of the DGCL.

ARTICLE SEVEN

Whenever a compromise or arrangement is proposed between the Corporation and its creditors or any class of them and/or between the Corporation and its stockholders or any class of them, any court of equitable jurisdiction within the State of Delaware may, on the application in a summary way of the Corporation or any creditor or stockholder thereof or on the application of any receiver or receivers appointed for the Corporation under the provisions of Section 291 of Title 8 of the Delaware Code or on the application of trustees in dissolution or of any receiver or receivers appointed for the Corporation under the provisions of Section 279 of Title 8 of the Delaware Code, order a meeting of the creditors or class of creditors, and/or the stockholders or class of stockholders of the Corporation, as the case may be, to be summoned in such manner as the said court directs. If a majority in number representing three-fourths in value of the creditors or class of creditors, and/or of the stockholders or class of stockholders of the Corporation, as the case may be, agree to any compromise or arrangement and to any reorganization of the Corporation as a consequence of such compromise or arrangement, the said compromise or arrangement and the said reorganization shall, if sanctioned by the court to which the said application has been made, be binding on all the creditors or class of creditors, and/or on all the stockholders, or class of stockholders, of the Corporation, as the case may be, and also on this Corporation.

ARTICLE EIGHT

Section 1. Nature of Indemnity. Each person who was or is made a party or is threatened to be made a party to or is involved in any action, suit or proceeding, whether civil, criminal, administrative or investigative (hereinafter a “proceeding”), by reason of the fact that he or she (or a person of whom he or she is the legal representative), is or was at any time after the date hereof a director or officer of the Corporation or is or was at any time after the date hereof serving at the request of the Corporation as a director, officer, employee, fiduciary, or agent of another corporation or of a partnership, joint venture, trust or other enterprise, including service with respect to employee benefit plans, whether the basis of such proceeding is alleged action in an official capacity as a director, officer, employee, fiduciary or agent or in any other capacity while serving as a director, officer, employee, fiduciary or agent, shall be indemnified and held harmless by the Corporation to the fullest extent which it is empowered to do so by the DGCL, as the same exists or may hereafter be amended (but, in the case of any such amendment, only to the extent that such amendment permits the Corporation to provide prior to such amendment), against all expense, liability and loss (including attorneys’ fees actually and reasonably incurred by such person in connection with such proceeding) and such indemnification shall inure to the benefit of his or her heirs, executors and administrators; provided, however, that, except as provided in Section 2 of this Article Eight, the Corporation shall indemnify any such person seeking indemnification in connection with a proceeding initiated by such person only if such proceeding was authorized by the Board of Directors. The Corporation may, by action of the Board of Directors, provide indemnification to employees and agents of the Corporation with the same scope and effect as the foregoing indemnification of directors and officers.

Section 2. Procedure for Indemnification of Directors and Officers. Any indemnification of a director or officer of the Corporation under Section 1 of this Article Eight or advance of expenses under Section 5 of this Article Eight shall be made promptly, and in any event within 30 days, upon the written request of the director or officer. If a determination by the Corporation that the director or officer is entitled to indemnification pursuant to this Article Eight is required, and the Corporation fails to respond within 60 days to a written request for indemnity, the Corporation shall be deemed to have approved the request. If the Corporation denies a written request for indemnification or advancing of expenses, in whole or in part, or if payment in full pursuant to such request is not made within 30 days, the right to indemnification or advances as granted by this Article Eight shall be enforceable by the director or officer in any court of competent jurisdiction. Such person’s costs and expenses incurred in connection with successfully establishing his right to indemnification, in whole or in part, in any such action shall also be indemnified by the Corporation. It shall be a defense to any such action (other than an action brought to enforce a claim for expenses incurred in defending any proceeding in advance of its final disposition where the required undertaking, if any, has been tendered to the Corporation) that the claimant has not met the standards of conduct which make it permissible under the DGCL for the Corporation to indemnify the claimant for the amount claimed, but the burden of such defense shall be on the Corporation. Neither the failure of the Corporation (including the Board of Directors, independent legal counsel, or its stockholders) to have made a determination prior to the commencement of such action that indemnification of the claimant is proper in the circumstances because he or she has met the applicable standard of conduct set forth in the DGCL, nor an actual determination by the Corporation (including its Board of Directors, independent legal counsel, or its stockholders) that the claimant has not met such applicable standard of conduct, shall be a defense to the action or create a presumption that the claimant has not met the applicable standard of conduct.

Section 3. Nonexclusivity of Article Eight. The rights to indemnification and the payment of expenses incurred in defending a proceeding in advance of its final disposition conferred in this Article Eight shall not be exclusive of any other right which any person may have or hereafter acquire under any statute, provision of this Certificate of Incorporation (the “Certificate of Incorporation”), Bylaws, agreement, vote of stockholders or disinterested directors or otherwise.

Section 4. Insurance. The Corporation may purchase and maintain insurance on its own behalf and on behalf of any person who is or was a director, officer, employee, fiduciary, or agent of the Corporation or was serving at the request of the Corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise against any liability asserted against him or her and incurred by him or her in any such capacity, whether or not the Corporation would have the power to indemnify such person against such liability under this Article Eight.

Section 5. Expenses. Expenses incurred by any person described in Section 1 of this Article Eight in defending a proceeding or enforcing the person’s rights to indemnification or advancement of expenses under this Article Eight shall be paid by the Corporation in advance of such proceeding’s final disposition upon receipt of an undertaking by or on behalf of the director or officer to repay such amount if it shall ultimately be determined that he or she is not entitled to be indemnified by the Corporation. Such expenses incurred by other employees and agents may be so paid upon such terms and conditions, if any, as the Board of Directors deems appropriate.

Section 6. Employees and Agents. Persons who are not covered by the foregoing provisions of this Article Eight and who are or were employees or agents of the Corporation, or who are or were serving at the request of the Corporation as employees or agents of another corporation, partnership, joint venture, trust or other enterprise, may be indemnified to the extent authorized at any time or from time to time by the Board of Directors.

Section 7. Contract Rights. The provisions of this Article Eight shall be deemed to be a contract right between the Corporation and each director or officer who serves in any such capacity at any time while this Article Eight and the relevant provisions of the DGCL or other applicable law are in effect, and any repeal or modification of this Article Eight or any such law shall not affect any rights or obligations then existing with respect to any state of facts or proceeding then existing.

Section 8. Merger or Consolidation. For purposes of this Article Eight, references to “the Corporation” shall include, in addition to the resulting corporation, any constituent corporation (including any constituent of a constituent) absorbed in a consolidation or merger which, if its separate existence had continued, would have had power and authority to indemnify its directors, officers, and employees or agents, so that any person who is or was a director, officer, employee or agent of such constituent corporation, or is or was serving at the request of such constituent corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise, shall stand in the same position under this Article Eight with respect to the resulting or surviving corporation as he or she would have with respect to such constituent corporation if its separate existence had continued.

ARTICLE NINE

In the event that a director or officer of the Corporation who is also an employee, partner, principal, director or officer of Avista (as defined below) acquires knowledge of a potential transaction or matter which may be a corporate opportunity for the Corporation or any of its Subsidiaries, such director or officer of the Corporation shall have fully satisfied and fulfilled the fiduciary duty of such director or officer of the Corporation and its shareholders with respect to such corporate opportunity, if such director or officer acts in a manner consistent with the following policy: (i) a corporate opportunity that any person who is a director or officer of the Corporation, and who is also an employee, partner, principal, director or officer of Avista, acquires knowledge of while acting in such person’s capacity as a director or officer of the Corporation, shall belong to the Corporation and (ii) otherwise, any corporate opportunity may be pursued by Avista and any pursuit by Avista shall not constitute a breach of fiduciary liability. For the purposes of this Article Nine, “Avista” means Avista Capital Partners III, L.P., Avista Capital Partners (Offshore) III, L.P., Avista Capital Holdings, L.P. and each of their respective direct or indirect controlling affiliates and each of their respective, and its controlling affiliates’ respective, nominees, advisory and investment managing entities.

The Corporation hereby eliminates, to the fullest extent permitted by law, the personal liability of any person who serves as a director of the Corporation to the Corporation and/or its stockholders for monetary damages for breach of fiduciary duty as a director; provided, however, that if in the future the DGCL is amended or modified (including, but not limited to, Section 102(b)(7)) to permit the elimination of the personal liability of a director of the Corporation to a greater extent than contemplated above, then the provisions of this Article Nine shall be deemed to be automatically amended to provide for the elimination of the personal liability of the directors of the Corporation to such greater extent. This Article Nine shall not eliminate or limit the liability of a director for any act or omission occurring prior to the date when this Article Nine becomes effective.

ARTICLE TEN

Any action required or permitted to be taken by the Board of Directors may be taken without a meeting if the members of the Board of Directors that would constitute a quorum pursuant to the By-Laws consent in writing or by electronic transmission to the adoption of a resolution authorizing the action. The resolutions, written consents or electronic transmissions of the members of the Board of Directors shall be filed with the minutes of the proceeding of the Board of Directors. Such filing shall be in paper form if the minutes are maintained in paper form and shall be in electronic form if the minutes are maintained in electronic form.

ARTICLE ELEVEN

The Corporation reserves the right to amend or repeal any provisions contained in this Certificate of Incorporation from time to time and at any time in the manner now or hereafter prescribed by the laws of the State of Delaware, and all rights conferred upon stockholders and directors are granted subject to such reservation.