Exhibit 3.1

CERTIFICATE OF AMENDMENT

TO THE

AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

OF

DIALOGIC INC.

Pursuant to Section 242 of the

General Corporation Law of the State of Delaware (“DGCL”)

Dialogic Inc., a Delaware corporation (hereinafter called the “Corporation”), does hereby certify as follows:

FIRST: Effective at 5:00 p.m. (Eastern Time) on the date of filing with the Secretary of State of the State of Delaware (such time, on such date, the “Effective Time”) of this Certificate of Amendment pursuant to the DGCL, each five (5) shares of the Corporation’s common stock, $0.001 par value per share, issued and outstanding immediately prior to the Effective Time (the “Old Common Stock”) shall automatically without further action on the part of the Corporation or any holder of Old Common Stock, be reclassified, combined, converted and changed into one (1) fully paid and nonassessable share of common stock, $0.0001 par value per share (the “New Common Stock”), subject to the treatment of fractional share interests as described below. The conversion of the Old Common Stock into New Common Stock will be deemed to occur at the Effective Time. From and after the Effective Time, certificates representing the Old Common Stock shall represent the number of shares of New Common Stock into which such Old Common Stock shall have been converted pursuant to this Certificate of Amendment. There shall be no fractional shares issued. In lieu thereof, the aggregate of all fractional shares otherwise issuable to the holders of record of Old Common Stock shall be issued to Computershare Limited (the “Transfer Agent”), as agent, for the accounts of all holders of record of Old Common Stock otherwise entitled to have a fraction of a share issued to them. The sale of all fractional interests will be effected by the Transfer Agent as soon as practicable after the Effective Time on the basis of prevailing market prices of the New Common Stock at the time of sale. After such sale and upon the surrender of the stockholders’ stock certificates, the Transfer Agent will pay to such holders of record their pro rata share of the net proceeds derived from the sale of the fractional interests.

SECOND: The foregoing amendment was duly adopted in accordance with Section 242 of the DGCL.

IN WITNESS WHEREOF, Dialogic Inc. has caused this Certificate of Amendment to be duly executed in its corporate name this 14th day of September, 2012.