EXHIBIT 5.1


                                 April 3, 1997


Genesys Telecommunications Laboratories, Inc.
1155 Market Street
San Francisco, CA 94103

             Re:  Registration Statement on Form S-1
                  ----------------------------------

Ladies and Gentlemen:

             We have examined the Registration Statement on Form S-1 to be filed
by you with the Securities and Exchange Commission (the "Commission") on April 
3, 1997 (the "Registration Statement"), in connection with the registration 
under the Securities Act of 1933, as amended, of 2,300,000 shares of your Common
Stock (the "Shares"). The Shares include an over-allotment option to purchase 
300,000 shares granted to the Underwriters. As your counsel in connection with 
this transaction, we have examined the proccedings taken and are familiar with 
the proceedings proposed to be taken by you in connection with the sale and 
issuance of the Shares.

             It is our opinion that, upon conclusion of the proceedings being 
taken or contemplated by us, as your counsel, to be taken prior to the issuance
of the Shares, such Shares, when issued and sold in the manner described in the 
Registration Statement, will be legally  and validly issued, fully paid and 
nonassessable.

             We consent to the use of this opinion as an exhibit to such 
Registration Statement, and further consent to the use of our name wherever 
appearing in such Registration Statement, including the prospectus constituting 
a part thereof, and any amendment thereto.

                                     Very truly yours,


                                     BROBECK, PHLEGER & HARRISON LLP