EXHIBIT 10.12 MCK Communications, Inc. 313 Washington Street Newton, MA 02158 [_________________________] c/o MCK Communications, Inc. 313 Washington street Newton, MA 02158 Dear [______________]: In connection with your employment arrangements, MCK...

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                                                                   EXHIBIT 10.12


                            MCK Communications, Inc.
                              000 Xxxxxxxxxx Xxxxxx
                                Xxxxxx, XX 00000



                                                        [______________________]



[_________________________]
c/o MCK Communications, Inc.
000 Xxxxxxxxxx xxxxxx
Xxxxxx, XX 00000

Dear [______________]:

           In connection with your employment arrangements, MCK Communications,
Inc. agrees to pay you a bonus on each date you pay interest pursuant to the
terms of the attached Promissory Note, in each case an amount equal to the
amount of the related interest payment.

           Executed under seal as of the date set forth above.




                                             By: ____________________
                                                 Name:
                                                 Title:


Accepted and Agreed to:



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