Exhibit 10.87

Confidentiality, Assignment of Inventions and Non-Competition Agreement

AGREEMENT entered into effective 2/23/09 (start date) by and between Comverse Technology, Inc., a New York Corporation, on behalf of
itself and its subsidiaries (the Company) and Joel Legon (Employee).

WHEREAS, the Employee has agreed
to be employed by the Company, and

WHEREAS, the parties desire to provide for certain terms of Employees services to
the Company,

NOW, THEREFORE, in consideration of Employees employment by the Company, the compensation received by
Employee from time to time hereunder, and !he mutual covenants contained herein, the parties agree as follows:



|1. | Disclosure and Surrender of Confidential Information
|-- | ----------------------------------------------------

1.1 Employee expressly acknowledges that he will receive Confidential Information pertaining to the products, services, operations
and/or business affairs of the Company. For the purposes of this Agreement, Confidential Information shall include, but not be limited to, information concerning or related to the Companys financial matters, business methods and
practices, the Companys proprietary computer software, firmware, hardware, documentation, scientific, technical, economic, or engineering information including patterns, plans, compilations, program devices, formulae, designs, prototypes,
methods, techniques, processes, procedures, programs or codes, whether tangible or intangible, and whether or how stored, compiled, or memorialized physically, electronically, graphically or photographically (including, without limiting the
generality of the foregoing, any such items created, developed, produced or made known to Employee during the period of or arising out of Employees employment with the Company), the Companys suppliers, customers and potential customers,
confidential information disclosed to the Company by a third party, the Companys sales and marketing plans, and any other information not generally known to the public which, if misused or disclosed, could have a reasonable possibility of
adversely affecting the Companys business or financial condition.

1.2 In recognition of the fact that such Confidential
Information contains valuable trade secrets of the Company, Employee agrees that he shall not, during the term of this Agreement and thereafter, use or disclose to any third party any such Confidential Information for any reason or purpose
whatsoever without the express written consent of the Company. Employee understands that, pursuant to the Economic Espionage Act, violation of this Section 1.2 could result in a fine, imprisonment or both.

1.3 Employee hereby assigns to the Company any and all rights, title and interest that Employee now has in the Companys
Confidential Information and agrees to assign to the Company any and all rights, title and interest that Employee may hereafter acquire in the Companys Confidential Information.



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1.4 Upon termination of his employment with the Company, for whatever reason, Employee will
promptly surrender to the Company all copies, in whatever form, of the Companys Confidential Information in Employees possession or control, and Employee will not remove or transmit by any means from the Company or take with him any of
the Companys Confidential Information that is embodied in any tangible medium of expression.



|2. | Confidentiality of Previous Employers/Clients
|-- | ---------------------------------------------

Employee represents that his performance hereunder does not and will not breach any agreement to keep in confidence any proprietary
information acquired by Employee in confidence or in trust of a present or former employer or client. Employee also understands that at no time during his employment with the Company is Employee to breach any obligation of confidentiality that
Employee has to present or former employers or clients, and Employee agrees to fulfill all such obligations during his employment with the Company. Employee agrees that he shall not disclose to the Company any proprietary information of a third
party without written permission from the third party. Employee understands that, pursuant to the Economic Espionage Act, violation of this Section could result in a fine, imprisonment or both.



|3. | Disclosure of Inventions
|-- | ------------------------

3.1 For the purposes of this Agreement, Inventions shall have the same meaning as set forth in 35 U.S.C. §§100 and
101, and may include without limitation, any of the following as applicable: all discoveries, developments, designs, improvements, inventions, formulae, processes, techniques, computer programs, strategies, specific computer-related or
telecommunications-related know-how and data.

3.2 During Employees employment by the Company and for a period of six
(6) months thereafter, Employee will promptly and fully disclose to the Company (and to any persons designated by it) any and all Inventions generated or conceived or reduced to practice or learned by Employee, either alone or jointly with
others, which result from or relate to tasks assigned by the Company to Employee, or which result from or relate to tasks, projects or products being conducted or made within the Company about which Employee has obtained substantial knowledge during
his employment with the Company.



|4. | Ownership Rights and Assignment of Inventions
|-- | ---------------------------------------------

4.1 Employee and the Company hereby agree that, to the extent the United States copyright laws or the laws of any jurisdiction bound to
recognize rights of copyright, authors rights or any similar other rights so permit, all services rendered by Employee hereunder, and the work product resulting from same, are and shall be deemed to be performed by Employee as work for hire or
works made for hire for the Company, and are and shall be the sole and exclusive property of the Company. To the extent such laws or any rule of law does not so permit, then Employee expressly agrees to assign to the Company any and all rights,
title and interest which Employee has or hereafter acquires in such services and work product, including without limitation, any and all rights to copyrights, trademarks and trade secrets thereto.

4.2 Employee agrees that all Inventions generated or conceived or reduced to practice or learned by Employee, either alone or jointly
with others, during the following time periods: (a) during Employees employment by the Company and (b) for a period of six (6) months thereafter, shall be the sole property of the Company and its assigns, and the Company and its
assigns shall be the sole owner of all patent applications and all patents issued in connection therewith, provided however, that such



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Inventions in any way result from or relate to tasks assigned to the Employee during his employment at the Company, or which result from or relate to tasks, projects or products being conducted
or made within the Company about which Employee obtained substantial knowledge during his employment at the Company. Employee hereby assigns to the Company any and all rights, title and interest which Employee has in such Inventions, and agrees to
assign to the Company any and all rights, title and interest which Employee may hereafter acquire in such Inventions.

4.3
With respect to all such Inventions described in Section 3.2 and Section 4.2 above, Employee further agrees to assist the Company in every proper way (but at the Companys expense) to apply for, prosecute, obtain, defend and enforce
patents, and other proprietary rights and protections relating to said Inventions in any and all countries, including but not limited to, as the Company may elect: (a) taking all lawful oaths and doing all lawful acts, including giving
testimony, and (b) executing all documents, including, but not limited to, all applications, powers, assignments and other papers deemed by the Company or persons designated by it to be necessary or advisable.

4.4 Employees obligations as set forth in Section 3.2 and Section 4.3 above shall continue beyond the termination of his
employment by the Company, but the Company shall compensate Employee at a reasonable rate after Employees termination for time actually spent by Employee on such assistance. In the event the Company is unable, after reasonable effort, to
secure Employees signature on any document or documents needed to apply for, prosecute, obtain, defend or enforce any patent, copyright, trademark, trade secret, or other proprietary right or protection relating to an Invention described in
Sections 3 and 4 above, whether because of Employees physical or mental incapacity or for any other reason whatsoever, Employee hereby irrevocably designates and appoints the Company and its duly authorized Officers and agents as
Employees agent coupled with an interest and attorney-in-fact, to act for and in Employees behalf and stead to execute and file any such documents and to do all other lawfully permitted acts to further the Companys rights hereunder
with the same legal force and effect as if executed by Employee.



|5. | Previous Inventions
|-- | -------------------

5.1
As a matter of record Employee has identified below and in an attachment hereto (as required), all Inventions generated or conceived or reduced to practice or learned by Employee, either alone or jointly with others, prior to his employment by the
Company, which Employee desires to remove from the operation of this Agreement. Employee represents and warrants that such list is complete. If there is no such information listed, Employee represents that he made no such Inventions at the time of
signing this Agreement.

The following is a complete list of all Inventions relative to the subject matter of
my service as an employee of the Company that have been generated or conceived or first reduced to practice or learned by me, alone or jointly with others, prior to my employment by the Company:

[    ]
                            No Inventions

[    ]
                            See Below:

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

[    ]
                            Additional sheets attached



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|6. | Restrictive Covenant
|-- | --------------------

6.1. For and in consideration of the compensation to be paid by the Company pursuant to the terms hereof, and in recognition of the fact
that Employee will have access to Confidential Information and other valuable rights of the Company, Employee covenants and agrees that he will not, at any time during his employment with the Company, and for a period of six (6) months
thereafter, directly or indirectly, engage in any business or in any activity related to the development, sale, production, manufacturing, marketing or distribution of products or services which are in competition with products or services which the
Company or any of its subsidiaries produces, sells, manufactures, markets, distributes or has interest in, in any state or foreign country in which the Company or any of its subsidiaries then conducts business or reasonably has plans to conduct
business. It is not the intent of this covenant to bar Employee from employment in any company whose general business is the manufacture of communications equipment or delivery of communications services, only to limit specific and direct
competition with the Company. Employee further agrees that during his employment by the Company and for a period of (6) months thereafter, Employee shall not, directly or indirectly, induce, attempt to induce, or aid others in inducing, a
salaried employee of the Company to accept employment or affiliation with another firm or corporation engaging in such business or activity of which Employee is an employee, owner, partner or consultant.

6.2 The Company and Employee agree that the duration and geographic scope of this Restrictive Covenant provision, set forth in this
Section 6, are reasonable. In the event that any court of competent jurisdiction determines that the duration or the geographic scope, or both, are unreasonable and that such provision is to that extent unenforceable, the Company and Employee
hereto agree that the provision shall remain in full force and effect for the greatest time period and in the greatest area that would not render it unenforceable. The Company and Employee intend that this provision shall be deemed to be a series of
separate covenants, one for each and every county of each and every state of the United States of America and each and every political subdivision of each and every country outside the United States of America where this provision is intended to be
effective.

6.3 Notwithstanding the foregoing, nothing contained in this Agreement shall prevent Employee from being an
investor in securities of a competitor listed on a national securities exchange or actively traded over-the-counter so long as such investments are in amounts not significant as compared to his total investments or to the aggregate of the
outstanding securities of the issuer of the same class or issue of the specific securities involved.



|7. | Damages - Injunctive Relief
|-- | ---------------------------

In the event of a breach or threatened breach by Employee of any of the provisions of this Agreement, the Company shall be entitled to
temporary and/or permanent injunctions in order to prevent or restrain any such breach by Employee or by Employees partners, agents, representatives, servants, employers and employees. Said remedies shall be in addition to, and not in
limitation of, any other rights or remedies to which the Company is or may be entitled at law, in equity, or under this Agreement.



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|8. | Assignment
|-- | ----------

Employee acknowledges that the services to be rendered by him are unique and personal. Accordingly, Employee may not assign any of his
rights or delegate any of his duties or obligations under this Agreement. In the event that the Company shall be merged with, or consolidated into, any other corporation or entity, or in the event that the Company shall sell or transfer
substantially all of its assets to another corporation or entity, the terms of this Agreement shall inure to the benefit of, and be assumed by, such corporation or entity.



|9. | Notices
|-- | -------

Any notice
required or desired to be given under this Agreement shall be deemed given if in writing sent by certified mail, to his residence in the case of Employee, or to its principal office in the case of the Company.



|10. | Applicable Law
|--- | --------------

This
Agreement has been made in and shall be governed by the laws of the State of New York.



|11 | New York Courts
|-- | ---------------

Any
action to enforce, arising out of, or relating in any way to, any of the provisions of this Agreement may be brought and prosecuted in such court or courts located in the State of New York as is provided by law; and the parties consent to the
jurisdiction of said court or courts located in the State of New York and to service of process by registered mail, return receipt requested, or by any other manner provided by law.



|12. | Severability
|--- | ------------

If any
provision of this Agreement shall be held invalid or unenforceable, the remainder of this Agreement shall nevertheless remain in full force and effect. If any provision is held invalid or unenforceable with respect to particular circumstances, it
shall nevertheless remain in full force and effect in all other circumstances.



|13. | Waiver
|--- | ------

No waiver by
either party of any breach or violation of any provision of this Agreement shall operate or be construed as a waiver of any subsequent breach or violation hereof.



|14. | Headings
|--- | --------

The headings
contained in this Agreement are for reference purposes only and shall not in any way affect the meaning or interpretation of this Agreement.



|15. | Survival
|--- | --------

The provisions
of Sections 1, 3,4,6,7, 8, 9, 10, 11, 12, 13, and 16 herein shall survive the termination of this Agreement.



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|16. | Amendments
|--- | ----------

This
Agreement may not be amended, nor shall any waiver, change, modification, consent or discharge hereof be affected except by an instrument in writing executed by or on behalf of the party against whom enforcement of any such amendment, waiver,
change, modification, consent or discharge is sought.

The parties have signed this Agreement the day and year first above written.



|                    |  |  |  |                           |  |                  |  | 
|------------------- |  |  |  | ------------------------- |  | ---------------- |  | 
|                    |  |  |  | COMVERSE TECHNOLOGY, INC.
|                    |  |  | 
|/s/ Joel E. Legon   |  |  |  | By:                       |  | /s/ Shefali Shah
|Employee Signature  |  |  |  |                           |  |                 
|Joel E. Legon       |  |  |  |                           |  | Shefali Shah    
|Employee Print Name |  |  |  |                           |  |                 
|                    |  |  | 
|2/13/09             |  |  |  |                           |  |                 
|Date                |  |  |  |                           |  | Date            



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