EXHIBIT 10(z)

                           REVOLVING CREDIT MASTER
                               PROMISSORY NOTE

$1,700,000.00                                        Princeton, New Jersey
                                                     as of February 19, 2004

      FOR VALUE RECEIVED, the undersigned FARMSTEAD TELEPHONE GROUP, INC. a
Delaware corporation ("Borrower") promises to pay to the order of BUSINESS
ALLIANCE CAPITAL CORP. (herein called "BACC") at 214 Carnegie Center, Suite
302, Princeton, New Jersey, 08540, or such other address as BACC may notify
Borrower, such sum up to One Million Seven Hundred Thousand and 00/100
($1,700,000.00) Dollars, together with interest as hereinafter provided, as
may be outstanding on Advances by BACC to Borrower under Paragraph 2.1 of
the Loan and Security Agreement dated February 19, 2003 between BACC and
Borrower (said Agreement as amended or modified from time to time the "Loan
Agreement"). Capitalized terms not otherwise defined herein have the
meanings set forth in the Loan Agreement. The Loan Agreement is incorporated
herein as though fully set forth and Borrower acknowledges its reading and
execution. The principal amount due hereunder shall be paid to BACC on
February 19, 2005 or as may otherwise be provided for in the Loan Agreement.

      On the first day of each month hereafter, Borrower shall pay BACC
accrued interest, computed on the basis of a 360 day year, for the actual
number of days elapsed, on the daily unpaid balance of the Advances, at the
per annum rate of one and one half (1.5%) percentage points above the Prime
Rate, in effect from time to time, but not less than five and three quarters
percent (5.75%) per annum. If there is a change in the Prime Rate, the rate
of interest on the Advances shall be changed accordingly as of the date of
the change in the Prime Rate, without notice to Borrower.

      To secure the payment of this Note and the Obligations, Borrower has
granted to BACC a continuing security interest in and lien on the
Collateral.

      In addition to all remedies provided by law upon default on payment of
this Note, or upon an Event of Default, which is not fully cured within any
applicable cure period set forth in Section 8 of the Loan Agreement, if any,
BACC may, at its option:

            (1)   Declare this Note and the Obligations immediately due and
      payable;

            (2)   Collect interest on this Note at the default rate set
      forth in the Loan Agreement from the date of such Event of Default,
      and if this Note is referred to an attorney for collection, collect
      reasonable attorneys' fees; and

            (3)   Exercise any and all remedies provided for in the Loan
      Agreement.

      This note represents a modification, renewal, and restatement in its
entirety of that certain Revolving Credit Master Promissory Note of Borrower
to BACC in the principal amount of One Million Five Hundred Thousand Dollars
($1,500,000.00) dated February 19, 2003, and is not intended as a novation
of said note or the loans evidenced thereby.

      BORROWER WAIVES PRESENTMENT FOR PAYMENT, PROTEST AND NOTICE OF PROTEST
FOR NON-PAYMENT OF THIS NOTE AND TRIAL BY JURY IN ANY ACTION UNDER OR
RELATING TO THIS NOTE AND THE ADVANCES EVIDENCED HEREBY.


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      BORROWER ACKNOWLEDGES THAT THIS PROMISSORY NOTE EVIDENCES A COMMERCIAL
TRANSACTION AND THAT IT COULD, UNDER CERTAIN CIRCUMSTANCES HAVE THE RIGHT
UNDER CHAPTER 903a, AS FROM TIME TO TIME AMENDED, OF THE CONNECTICUT GENERAL
STATUTES, SUBJECT TO CERTAIN LIMITATIONS, TO NOTICE OF AND HEARING ON THE
RIGHT OF BACC TO OBTAIN A PREJUDGMENT REMEDY, SUCH AS ATTACHMENT,
GARNISHMENT AND/OR REPLEVIN, UPON COMMENCING ANY LITIGATION AGAINST
BORROWER. NOTWITHSTANDING, BORROWER HEREBY WAIVES ALL RIGHTS TO NOTICE,
JUDICIAL HEARING OR PRIOR COURT ORDER TO WHICH IT MIGHT OTHERWISE HAVE THE
RIGHT UNDER SAID CHAPTER 903a, AS FROM TIME TO TIME AMENDED, OR UNDER ANY
OTHER STATE OR FEDERAL STATUTE OR CONSTITUTION IN CONNECTION WITH THE
OBTAINING BY BACC OF ANY PREJUDGMENT REMEDY BY REASON OF THIS PROMISSORY
NOTE, OR BY REASON OF BORROWER'S OBLIGATIONS OR ANY RENEWALS OR EXTENSIONS
OF THE SAME. BORROWER ALSO WAIVES ANY AND ALL OBJECTIONS WHICH IT MIGHT
OTHERWISE ASSERT, NOW OR IN THE FUTURE, UPON THE OCCURRENCE OF AN EVENT OF
DEFAULT (AS SUCH TERM IS DEFINED IN THE LOAN AGREEMENT), ALL APPLICABLE
GRACE AND CURE PERIODS HAVING EXPIRED, TO THE EXERCISE OR USE BY BACC OF ANY
RIGHT OF SETOFF, REPOSSESSION OR SELF HELP AS MAY PRESENTLY EXIST UNDER THE
STATUTE OR COMMON LAW. The provisions of this paragraph shall be governed
by, construed and enforced in accordance with the laws of the State of
Connecticut.


                                  FARMSTEAD TELEPHONE GROUP, INC.


                                  By: /s/ ROBERT G. LAVIGNE
                                      ---------------------
                                      Name: Robert G. LaVigne
                                      Title: Executive Vice President and
CFO


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