EXHIBIT 10.2

ADDENDUM TO NOTE

THIS ADDENDUM TO NOTE (the “Addendum”) is made this 17th day of July, 2007 and
is incorporated into and shall be deemed to amend and supplement the Note made
by the undersigned (individually and collectively and jointly and severally, the
“Makers”), in favor of Dutchess Private Equities Fund Ltd., successor in
interest to Dutchess Private Equities Fund LP, Dutchess Private Equities Fund II
LP and Dutchess Advisors Ltd. (the “Holder”) and dated August 1, 2006 (as the
same has been modified, restructured, restated and amended to date, including,
without limitation, pursuant to the Loan Restructure Agreement dated August 1,
2006 and the Second Loan Restructure Agreement dated January 30, 2007, the
“Note”).

RECITALS

1.

The Note is secured by a Security Agreement dated September 15, 2005 from
Network Installation Corp. and its subsidiaries in favor of Dutchess Private
Equities Fund, II, LP (the “Original Security Agreement”).

2.

Contemporaneously herewith, the Holder is providing additional financing to the
Makers in an aggregate principal amount of $2,000,000 to be added to the
outstanding principal balance of the Note and evidenced by this Addendum to
Note, and, as a condition to the Holder advancing additional funds to the
Makers, the Makers and their subsidiaries are, among other things, entering into
an Amended and Restated Security Agreement to amend and restate the Original
Security Agreement to secure all obligations and liabilities of the Makers and
their subsidiaries to the Holder.

NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency
of which is hereby acknowledged, the parties hereto hereby agree as follows:

1.

Definitions.  All capitalized terms used herein without definition shall have
the meaning given to such terms in the Note.

2.

Modification to Note.  The Note is hereby modified as follows:

(i)

As of the date of this Addendum, the outstanding principal balance of the Note,
including the additional $2,000,000 provided by the Holder to the Makers shall
be $8,384,726.84.

(ii)

The repayment of principal and interest on the Note shall be repaid in
accordance with amortization schedule attached hereto as Exhibit A.

(iii)

The outstanding principal balance of the Note, as modified by this Addendum, and
all interest and other amounts owing thereon or in connection therewith shall be
due and payable, if not earlier in accordance with the terms of the Note, on
January 1, 2012.

(iv)

Notwithstanding anything to the contrary contained in the Note, any prepayments
on the Note shall be applied in the inverse order of maturities meaning that
when payments are received from Makers in excess of the regularly scheduled
repayment required under the Note, the overpayment shall be credited to the
final balloon installments of principal and will not affect the original
repayment schedule.

(v)

The proceeds received pursuant to this Addendum shall not applied toward the
calculation of the Threshold Amount.

3.

Joinder.  Siena Technologies, Inc. hereby acknowledges, agrees and confirms
that, by its execution of this Addendum to Note, it will, as if it has executed
the Note, have all the obligations of (i) a Maker for all purposes of the Note
and (ii) a party of identical capacity and obligations as a Maker to the Note.

1

--------------------------------------------------------------------------------

4.

Additional Security. In addition to the protections given to the Lender under
the Note or any other agreements entered into in connection therewith, the
Makers shall execute and deliver to the Lender the Amended and Restated Security
Agreement and such other agreements as the Lender shall request to secure the
obligations of the Makers under the Note, as modified by this Addendum.

5.

Miscellaneous.  

(i)

THIS ADDENDUM AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES HEREUNDER SHALL BE
GOVERNED BY AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH THE CHOICE OF LAW
PROVISIONS SET FORTH IN THE NOTE.

(ii)

This Addendum may not be changed, amended, restated, waived, supplemented,
discharged, canceled, terminated or otherwise modified orally or by any course
of dealing or in any manner other than as provided in Note.  This Addendum shall
be considered part of the Note.

(iii)

Except as specifically amended or modified hereby, the Note shall remain in full
force and effect and is hereby ratified and confirmed as so amended and modified
by this Addendum.

2

--------------------------------------------------------------------------------

BY SIGNING BELOW, each of the Makers accepts and agrees to the terms and
provisions contained in this Addendum to Note.

SIENA TECHNOLOGIES, INC.

By: /s/ Anthony A. DeLise
        Anthony A. DeLise

        Interim President and Interim CEO

KELLEY COMMUNICATION COMPANY, INC.

By:  /s/ James Michael Kelley

       James Michael Kelley

       President

3

--------------------------------------------------------------------------------

EXHIBIT A

Amortization Schedule

July 1, 2007

25,000.00

37,102.63

6,372,553.61

August 1, 2007

35,000.00

37,173.23

8,374,726.84

September 1, 2007

35,000.00

48,852.57

8,388,579.41

October 1, 2007

35,000.00

48,933.38

8,402,512.79

November 1, 2007

35,000.00

49,014.66

8,416,527.45

December 1, 2007

35,000.00

49,096.41

8,430,623.86

January 1, 2008

70,000.00

49,178.64

8,409,802.50

February 1, 2008

70,000.00

49,057.18

8,388,859.68

March 1, 2008

70,000.00

48,935.01

8,367,794.70

April 1, 2008

70,000.00

48,812.14

8,346,606.83

May 1, 2008

70,000.00

48,688.54

8,325,295.37

June 1, 2008

70,000.00

48,564.22

8,303,859.59

July 1, 2008

70,000.00

48,439.18

8,282,298.78

August 1, 2008

70,000.00

48,313.41

8,260,612.18

September 1, 2008

70,000.00

48,186.90

8,238,799.09

October 1, 2008

70,000.00

48,059.66

8,216,858.75

November 1, 2008

70,000.00

47,931.68

8,194,790.43

December 1, 2008

70,000.00

47,802.94

8,172,593.37

January 1, 2009

150,000.00

47,673.46

8,070,266.83

February 1, 2009

150,000.00

47,076.56

7,967,343.39

March 1, 2009

150,000.00

46,476.17

7,863,819.56

April 1, 2009

150,000.00

45,872.28

7,759,691.84

May 1, 2009

150,000.00

45,264.87

7,654,956.71

June 1, 2009

150,000.00

44,653.91

7,549,610.62

July 1, 2009

150,000.00

44,039.40

7,443,650.02

August 1, 2009

150,000.00

43,421.29

7,337,071.31

September 1, 2009

150,000.00

42,799.58

7,229,870.89

October 1, 2009

150,000.00

42,174.25

7,122,045.14

November 1, 2009

150,000.00

41,545.26

7,013,590.40

December 1, 2009

150,000.00

40,912.61

6,904,503.01

January 1, 2010

200,000.00

40,276.27

6,744,779.28

February 1, 2010

200,000.00

39,344.55

6,584,123.83

March 1, 2010

200,000.00

38,407.39

6,422,531.22

April 1, 2010

200,000.00

37,464.77

6,259,995.98

May 1, 2010

200,000.00

36,516.64

6,096,512.62

June 1, 2010

200,000.00

35,562.99

5,932,075.61

July 1, 2010

200,000.00

34,603.77

5,766,679.39

August 1, 2010

200,000.00

33,638.96

5,600,318.35

September 1, 2010

200,000.00

32,668.52

5,432,986.88

October 1, 2010

200,000.00

31,692.42

5,264,679.30

November 1, 2010

200,000.00

30,710.63

5,095,389.93

December 1, 2010

200,000.00

29,723.11

4,925,113.04

January 1, 2011

250,000.00

28,729.83

4,703,842.86

February 1, 2011

250,000.00

27,439.08

4,481,281.95

4

--------------------------------------------------------------------------------

March 1, 2011

250,000.00

26,140.81

4,257,422.76

April 1, 2011

250,000.00

24,834.97

4,032,257.72

May 1, 2011

250,000.00

23,521.50

3,805,779.23

June 1, 2011

250,000.00

22,200.38

3,577,979.61

July 1, 2011

250,000.00

20,871.55

3,348,851.15

August 1, 2011

250,000.00

19,534.97

3,118,386.12

September 1, 2011

250,000.00

18,190.59

2,886,576.70

October 1, 2011

250,000.00

16,838.36

2,653,415.07

November 1, 2011

250,000.00

15,478.25

2,418,893.32

December 1, 2011

250,000.00

14,110.21

2,183,003.53

January 1, 2012

2,195,737.72

12,734.19

0.00

 

10,660,737.72

2,405,777.72

 

5