<PAGE>
                             PROMISSORY NOTE
                             ---------------
                            December 28, 1999
                                  (Date)

       11200 Murray Scholls Place, Beaverton, Washington Co., OR 97008
     (Street Address of Maker)   (Town)   (County)   (State)   (Zip Code)

FOR VALUE RECEIVED, Metro One Telecommunications, Inc. ("Maker") promises,
jointly and severally if more than one, to pay to the order of General
Electric Capital Corporation or any subsequent holder hereof (each, a
"Payee") at its office located at 4 North Park Drive, Suite 500, Hunt Valley,
Maryland 21030 or at such other place as Payee may designate, the principal
sum of Twenty million dollars ($20,000,000.00), with interest thereon, from
the date hereof through and including the dates of payment, at a fixed
interest rate of Nine and 29/100 percent (9.29%) per annum, to be paid in
lawful money of the United States, in forty-seven (47) consecutive monthly
installments of principal and interest of Five hundred thousand and four
hundred fifty-nine and 44/100 Dollars ($500,459.44) each (each, a "Periodic
Installment") and a final installment in the amount of $500,459.44. The first
Periodic Installment shall be due and payable on January 28, 2000, and the
following Periodic Installments and the final installment shall be due and
payable on the same day of each succeeding month (each, a "Payment Date").
Such installments have been calculated on the basis of 360 day year of twelve
30-day months. Each payment may, at the option of the Payee, be calculated
and applied on an assumption that such payment would be made on its due date.
Payments shall be paid by wire transfer of immediately available funds to
Bankers Trust, New York, New York 10006, Account No. [Account Number], ABA No.
021-001-033, or to such other account as holder may request.

The acceptance by Payee of any payment which is less than payment in full of
all amounts due and owing at such time shall not constitute a waiver of
Payee's right to receive payment in full at such time or at any prior
subsequent time.

The Maker hereby expressly authorizes the Payee to insert the date value is
actually given in the blank space on the face hereof.

This Note is secured by Collateral Schedule No. G-1 to Master Security
Agreement dated September 10, 1999 ("Security Agreement")

This is of the essence hereof. If any installment or any other sum due under
this Note or any Security Agreement is not received within ten (10) days
after its due date, the Maker agrees to pay, in addition to the amount of
each such installment or other sum, a late payment charge of five percent
(5%) of the amount of said installment or other sum, but not exceeding any
lawful maximum. In the event that (i) Maker fails to make payment of any
amount due hereunder within ten (10) days after the same becomes due and
payable; or (ii) Maker is in default under, or fails to perform under any
term or condition contained in any Security Agreement following any
applicable notice and/or cure period, then the entire principal sum remaining
unpaid, together with all accrued interest thereon and any other sum payable
under this Note or any Security Agreement, at the election of Payee, shall
immediately become due and payable, with interest thereon at the lesser of
500 basis points over the fixed interest rate payable hereunder or the
highest rate not prohibited by applicable law from the date of such
accelerated maturity until paid (both before and after any judgment).

The Maker may prepay all or part of its indebtedness hereunder upon payment
of an additional sum as a premium equal to the following percentages of the
remaining related principal balance for the indicated period:

    Prior to the second annual anniversary date of this Note: one percent (1%)
    Prior to the third annual anniversary date of this Note: one percent (1%)
    Prior to the fourth annual anniversary date of this Note: one percent (1%)
    and zero percent (0%) thereafter, plus all other sums due hereunder or
    under any Security Agreement


It is the intention of the parties hereto to comply with the applicable usury
laws; accordingly, it is agreed that, notwithstanding any provision to the
contrary in this Note or any Security Agreement, in no event shall this Note
or any Security Agreement require the payment or permit the collection of
interest in excess of the maximum amount permitted by applicable law. If any
such excess interest is contracted for, charged or received under this Note
or any Security Agreement, or if all of the principal balance shall be
prepaid, so that under any of such circumstances the amount of interest,
contracted for, charged or received under the Note or any Security Agreement
on the principal balance shall exceed the maximum amount of interest
permitted by applicable law, then in such event (a) the provisions of this
paragraph shall govern and control, (b) neither Maker nor any other person
or entity now or hereafter liable for the payment hereof shall be obligated
to pay the amount of such interest to the extent that it is in excess of the
maximum amount of interest permitted by applicable law, (c) any such excess
which may have been collected shall be either applied as a credit against the
then unpaid principal balance or refunded to Maker, at the option of the
Payee, and (d) the effective rate of interest shall be automatically reduced
to the maximum lawful contract rate allowed under applicable law as now or
hereafter construed by the courts having jurisdiction thereof. It is further
agreed that without limitation of the foregoing, all calculations of the rate
of interest contracted for, charged or received under this Note or any
Security Agreement which are made for the purpose of determining whether such
rate exceeds the maximum lawful contract rate, shall be made, to the extent
permitted by applicable law, by amortizing, prorating, allocating and
spreading in equal parts during the

<PAGE>

period of the full stated term of the indebtedness evidenced hereby, all
interest at any time contracted for, charged or received from Maker or
otherwise by Payee in connection with such indebtedness; provided however,
that if any applicable state law is amended or the law of the United States of
America preempts any applicable state law, so that it becomes lawful for the
Payee to receive a greater interest per annum rate than is presently allowed,
the Maker agrees that, on the effective date of such amendment or preemption,
as the case may be, the lawful maximum hereunder shall be increased to the
maximum interest per annum rate allowed by the amended state law or the law
of the United States of America.

The Maker and all sureties, endorsers guarantors or any others (each such
person, other than the Maker, an "Obligor") who may at any time become liable
for the payment hereof jointly and severally consent hereby to any and all
extensions of time, renewals, waivers or modifications of, and all
substitutions or releases of, security or any party primarily or secondary
liable on this Note or any Security Agreement or any term and provision of
either, which may be made, granted or consented to by Payee, and agree that
suit may be brought and maintained against any one or more of them, at the
election of Payee without joinder of any other as a party thereto, and that
Payee shall not be required first to foreclose, proceed against, or exhaust
any security hereof in order to enforce payment of this Note.  The Maker and
each Obligor hereby waives presentment, demand for payment, notice of
nonpayment, protest, notice of protest, notice of dishonor, and all notices
in connection herewith, as well as filing of suit (if permitted by law) and
diligence in collecting this Note or enforcing any of the security hereof,
and agrees to pay (if permitted by law) all reasonable expenses incurred in
collection, including Payee's actual attorneys' fees.

THE MAKER HEREBY UNCONDITIONALLY WAIVES ITS RIGHTS TO A JURY TRIAL OF ANY
CLAIM OR CAUSE OF ACTION BASED UPON OR ARISING OUT OF, DIRECTLY OR
INDIRECTLY, THIS NOTE, ANY OF THE RELATED DOCUMENTS, ANY DEALINGS BETWEEN
MAKER AND PAYEE RELATING TO THE SUBJECT MATTER OF THIS TRANSACTION OR ANY
RELATED TRANSACTIONS, AND/OR THE RELATIONSHIP THAT IS BEING ESTABLISHED
BETWEEN MAKER AND PAYEE.  The scope of this waiver is intended to be all
encompassing of any and all disputes that may be filed in any court
(including, without limitation, contract claims, tort claims, breach of duty
claims and all other common law and statutory claims).  THIS WAIVER IS
IRREVOCABLE MEANING THAT IT MAY NOT BE MODIFIED EITHER ORALLY OR IN WRITING,
AND THE WAIVER SHALL APPLY TO ANY SUBSEQUENT AMENDMENTS, RENEWALS,
SUPPLEMENTS OR MODIFICATIONS TO THIS NOTE, ANY RELATED DOCUMENTS, OR TO ANY
OTHER DOCUMENTS OR AGREEMENTS RELATING TO THIS TRANSACTION OR ANY RELATED
TRANSACTION.  In the event of litigation, this Note may be filed as a written
consent to a trial by the court.

This Note and any Security Agreement constitute the entire agreement of the
Maker and the Payee with respect to the subject matter hereof and supersedes
all prior understandings, agreements and representations, express or implied.

No variation or modification of this Note, or any waiver of any of its
provisions or conditions, shall be valid unless in writing and signed by an
authorized representative of Maker and Payee.  Any such waiver, consent,
modification or change shall be effective only in the specific instance and
for the specific purpose given.

Any provision in this Note or any Security Agreement which is in conflict
with any statute, law or applicable rule shall be deemed omitted, modified or
altered to conform thereto.


<TABLE>

<S>                                        <C>

                                           METRO ONE TELECOMMUNICATIONS, INC

                                           By: /s/ R. Tod Hutchinson      (L.S.)
-----------------------------------           ----------------------------
  (Witness)                                   Signature

                                            R. Tod Hutchinson  VP, Finance
-----------------------------------        -------------------------------
  (Print Name)                             Print name (and title, if applicable)

-----------------------------------        93-0995165
  (Address)                                Federal Tax ID Number

</TABLE>


<PAGE>


                          COLLATERAL SCHEDULE NO. G-1

     THIS COLLATERAL SCHEDULE NO. G-1 incorporates that certain Master
Security Agreement dated as of September 10, 1999 between General Electrical
Capital Corporation as Secured Party and Metro One Telecommunications, Inc. as
Debtor. Debtor hereby gives, grants and assigns to Secured Party a first
priority security interest in and against property listed below, and in and
against any and all additions, attachments, accessories and accessions
thereto, any and all substitutions, replacements or exchanges therefor, and
any and all insurance and/or other proceeds thereof (collectively, the
"Collateral"). The foregoing security interest is given to secure the payment
and performance of any and all debts, obligations and liabilities of any
kind, nature or description whatsoever (whether primary, secondary, direct,
contingent, sole, joint or several, or otherwise, and whether due or to
become due) of Debtor to Secured Party, now existing or hereafter arising,
including without limitation that certain Promissory Note dated December 28,
1999 in the original principal amount of $20,000,000.00 (the "Note") and any
renewals, extensions and modifications of the Note and such other debts,
obligations and liabilities.

<TABLE>
<CAPTION>

-------------------------------------------------------------------------------------------------
              Description                Year/Model            Serial           Location
-------------------------------------------------------------------------------------------------
<S>                                      <C>                  <C>               <C>

All Equipment and Telecommunications
Equipments; including but not limited
to the equipment as more specifically
described on the Attachment attached
hereto and incorporated herein by
reference, and in and against any and
all additions, attachments,
accessories and accessions thereto,
any and all substitutions,
replacements or exchanges therefor,
and any and all insurance and/or
other proceeds


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

</TABLE>

Debtor agrees that its obligations under the Notes to make payments to
Secured party in the amounts set forth in the Note are absolute and
unconditional and it will not assert against Secured Party, any defense,
claim, setoff, recoupment, abatement or other right, existing or future,
which Debtor may have against Secured Party or any other person or entity.

Debtor acknowledges that it has been advised that General Electric Capital
Corporation is acting (a) under the Agreement to the extent relating to this
Collateral Schedule and the Collateral, (b) hereunder and (c) with respect to
the Collateral, for itself and as agent for certain third parties (each being
herein referred to as a "PARTICIPANT" and, collectively, as the
"PARTICIPANTS"); that the interest of Secured Party in this Collateral
Schedule, related instruments and documents and/or the Collateral may be
conveyed to, in whole or in part, and may be used as security for financing
obtained from, one or more third parties without the consent of Debtor (the
"SYNDICATION"). Debtor agrees reasonably to cooperate with Secured Party in
connection with the Syndication, including the execution and delivery of such
other documents, instruments, notices, opinions, certificates and
acknowledgements as reasonably may be required by Secured Party or such
Participant.

SECURED PARTY:                          DEBTOR:
General Electric Capital Corporation    Metro One Telecommunications, Inc.
                                             /s/ R. Tod Hutchinson
By:                                     By : /s/ Stebbins B. Chandor Jr.
   ---------------------------------         ------------------------------
Title:                                  Title:    VP, FINANCE  SVP/CFO
      ------------------------------          -----------------------------
Date: December 28, 1999                 Date: December 28, 1999


<PAGE>


                         CERTIFICATE OF DELIVERY/INSTALLATION


Undersigned hereby certify that all equipment and property covered by a
Security Agreement or Chattel Mortgage dated September 10, 1999 and Note dated
December 29, 1999 between General Electric Capital Corporation ("SECURED
PARTY") and undersigned has been delivered to undersigned and found
satisfactory, and that any and all installation has been satisfactorily
completed. In order to induce Secured Party to advance the loan evidenced by
such Note, undersigned hereby waive any defense, counterclaim or offset
thereunder as against Secured Party.

                                       METRO ONE TELECOMMUNICATIONS, INC.
                                            /s/ R. Tod Hutchinson
                                       By : /s/ Stebbins B. Chandor Jr.
                                            ---------------------------------
                                       Title:    VP, FINANCE  SVP/CFO
                                             --------------------------------
                                       Date:     12/23/99     12/25/99
                                             --------------------------------