EXHIBIT 10.6

                                             BigBand  Networks,  Inc.
                                             3  Azrleli  Tower
                                             Floor  #36
                                             Tel  Aviv  67023
BIGBAND
NETWORKS                                     Phone:  03-607-1172
                                             Fax:    03-607-1222
                                             irisb@bigbandnet.com
                                             --------------------


                          ANNUAL AGREEMENT - YEAR 2001

February  05,  2001

Agreement  between
------------------

BigBand  Networks  Ltd.

Contact:     Iris  Bar-Shlomo  -  Purchasing  Manager
             Ronit  Goodman    -  Buyer

And

Enertec

Contact:     Harry  Mund


Enertec  will  provide  Bigband  the  following  power supply as agreed on their
quotation  from  Feb.04.2001  and  described  below:

<TABLE>
<CAPTION>
--------  -----------  -----------  ----------  -----  ---------  -------------
                                      Annual
                                     Forecast
BigBand                                From    Buffer
P/N       Manufacture  Manuf. P/N   March 2001  Stock  Lead Time  Unite Price $
--------  -----------  -----------  ----------  -----  ---------  -------------
<S>       <C>          <C>          <C>         <C>    <C>        <C>
PS000002  Hitron       HVP350-490E         500     60  12-14 Wks          225.6
--------  -----------  -----------  ----------  -----  ---------  -------------
</TABLE>


Remarks:

1.   Payment  Terms:  Net  +  45  days from Invoice date, in accordance with the
     "Yatzig"  rate  of  the  dollar

2.   The  price  above  includes  shipments  to BigBand's warehouse by supplier.

3.   One  order  of  500  pcs  with  split  delivery over a period of 12 months.

                                                                            E-34
<PAGE>
4.   Enertec  will  accept  to change delivery schedule at any time according to
     BigBand's  request  up  to  a  period  of  18  months  from  order  date.

5.   Enertec  will  keep  a buffer stock of 60 pcs for a time period of up to 18
     months.  This  qty  is  not  cancelable  and  part  of the annual Forecast.

6.   Enertec  will  accept  cancellation  of  partial  qty,  in  which  case  a
     cancellation  fee will apply. The cancellation fee is dependant on how much
     time  in  advance  the cancellation was done, where in the production state
     are  the cancelled units and can be 10% to 50% of cancelled units value, as
     will  be  agreed between Enertec and Bigband. In any case BigBand will have
     to  pay  for  special  components:  PCB,  transformer  and  other magnetics
     components.  Please provide  the  list.
                  -------------------------

7.   Bigband  has the possibility to cancel an order but in this case the prices
     will be adjusted according to the qty ordered: 100-250 pcs - $249 / 250-500
     pcs  -  $232.40.

8.   The  units  supplied  will  be  identical to the units approved by BigBand.

9.   Penalty  for  delay  on  confirmed  delivery:  2%  per  month,  10%  max.

10.  The supplier will provide BigBand a monthly report on the buffer stock, and
     will  not  use  them  without  BigBand's  written  confirmation.

11.  Enertec will do any repair needed in the Power Supply in Israel and without
     any  additional  charges.

12.  If  any changes will be required Enertec will share cost in accordance with
     negotiation.

13.  Warranty:  12  months  from  delivery.

14.  Prices  above  do  not  include  VAT.

15.  The  amount  set forth in this agreement shall be supplied to BigBand on an
     annual basis. Actual delivery of shipments shall be made in accordance with
     the  annual  order placed by Bigband or in accordance with the annual order
     placed  by  BigBand  or  in  accordance  to  specific  written request from
     BigBand,  throughout  the  year.

Thank  you  for  your  cooperation.

                         Ronit  Goodman           Iris  Bar-Shlomo
                         Buyer                    Purchasing  Manager
Supplier's  Signature

Name:     Harry  Mund

Date:     22/7/01


                                                                            E-35
<PAGE>