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                          July 27, 2023

       Timothy Rodenberger
       General Counsel
       Casa Systems, Inc.
       100 Old River Road
       Andover, MA 01810

                                                        Re: Casa Systems, Inc.
                                                            Registration
Statement filed on Form S-3
                                                            Filed July 21, 2023
                                                            File No. 333-273371

       Dear Timothy Rodenberger:

              This is to advise you that we have not reviewed and will not
review your registration
       statement.

               Please refer to Rules 460 and 461 regarding requests for
acceleration. We remind you
       that the company and its management are responsible for the accuracy and
adequacy of their
       disclosures, notwithstanding any review, comments, action or absence of
action by the staff.

                                                        Please contact Alex
King at 202-551-8631 with any questions.




                          Sincerely,


                          Division of Corporation Finance

                          Office of Manufacturing