THIS UNSECURED PROMISSORY NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT
OF 1933, AS AMENDED (THE "ACT"), AND MAY NOT BE OFFERED, SOLD OR OTHERWISE
TRANSFERRED, PLEDGED OR HYPOTHECATED IN THE ABSENCE OF A REGISTRATION STATEMENT
IN EFFECT WITH RESPECT TO THE SECURITIES, OR DELIVERY TO THE COMPANY OF AN
OPINION OF COUNSEL IN FORM AND SUBSTANCE SATISFACTORY TO THE COMPANY THAT SUCH
OFFER, SALE OR TRANSFER, PLEDGE OR HYPOTHECATION IS IN COMPLIANCE WITH THE ACT
OR UNLESS SOLD IN FULL COMPLIANCE WITH RULE 144 UNDER THE ACT.

                                                                   Dallas, Texas
                                                                October 21, 2005

                           LOCAL TELECOM SYSTEMS, INC.
                            UNSECURED PROMISSORY NOTE

      Local Telecom Systems, Inc., (Signature, Inc.) a Nevada corporation (the
"Company"), for value received, hereby promises to pay to Frank Fradella
Irrevocable Trust No. 1 (the "Holder"), located at 2251 Drusilla Lane, Suite B,
Baton Rouge, Louisiana 70809, the principal amount of One-Hundred-Ten Thousand
and no/100 Dollars ($110,000) (the "Loan Amount"), together with interest on the
unpaid amount thereof in accordance with the terms hereof, from the date hereof
until paid or converted in accordance with the terms hereof.

      Terms of the Promissory Note (the "Note").

            Interest Rate. The rate of interest hereunder ("Interest Rate")
shall be eighteen percent (18%) per annum and shall be computed on the basis of
a 365 day year for the actual number of days elapsed. Interest shall be paid
monthly beginning on November 30, 2005, and due on the 30th day of month
thereafter.

            Payment. The Loan Amount plus all accrued but previously unpaid
interest thereon shall become due and payable on the earliest of (i) April 21,
2006 (the "Maturity Date"), (ii) immediately prior to the closing of the
acquisition of a majority of stock of the Company by another entity by means of
a transaction or a series of related transactions or (iii) the closing of the
sale of all or substantially all of the assets of the Company, unless the
Company stockholders of record prior to such acquisition or sale set forth in
(ii) and (iii) above shall hold at least fifty percent (50%) of the voting power
of the acquiring or surviving entity immediately after such acquisition or sale
("Due Date"). Payment shall be made at the offices or residence of the Holder,
or at such other place as the Holder shall have designated to the Company in
writing, in lawful money of the United States of America.

            Prepayment. The Company may elect to repay this Note with no premium
or penalty.

            Default Interest. From and after the Due Date, the Corporation shall
pay interest on the unpaid principal balance of this Note at eighteen percent
(18%) per annum.

            Events of Default. If any of the events specified in this Section 2
shall occur (herein individually referred to as an "Event of Default"), then the
Holder may declare the entire principal and all accrued and unpaid interest
hereon immediately due and payable, by notice in writing to the Corporation:

<PAGE>

                  (a) Default in the payment of any principal or interest on
this Note when due and payable; or

                  (b) The institution by the Corporation of proceedings to be
adjudicated as bankrupt or insolvent, or the consent by it to institution of
bankruptcy or insolvency proceedings against it or the filing by it of a
petition or answer or consent seeking reorganization or release under the
federal Bankruptcy Act, or any other applicable federal or state law, or the
consent by it to the filing of any such petition or the appointment of a
receiver, liquidator, assignee, trustee or other similar official for the
Corporation, or for any substantial part of its property, or the making by it of
an assignment for the benefit of creditors, or the taking of corporate action by
the Corporation in furtherance of any such action.

The Corporation waives any and all notices in connection with this Note,
including but not limited to notice of intent to accelerate, notice of
acceleration, and notice of nonpayment.

            Security. The indebtedness evidenced by this Note shall be unsecured
with no collateral pledged against the indebtedness.

            Priority. The indebtedness evidenced by this Note shall not be
senior in right of payment to any prior payment of the Corporation's existing
Indebtedness, as hereinafter defined.

            Indebtedness. As used in this Note, the term "Indebtedness" shall
mean the principal of and accrued and unpaid interest on all indebtedness of the
Corporation to banks, insurance companies, other financial institutions or other
lenders, which is for money borrowed by the Corporation; provided,.

            Default on Indebtedness. If there should occur any receivership,
insolvency, assignment for the benefit of creditors, bankruptcy, reorganization
or arrangements with creditors (whether or not pursuant to bankruptcy or other
insolvency laws), sale of all or substantially all of the assets, dissolution,
liquidation or any other marshalling of the assets and liabilities of the
Corporation, or if this Note shall be declared due and payable upon the
occurrence of an Event of Default with respect to any Indebtedness, then no
amount shall be paid by the Corporation in respect of the principal of or
interest of its Indebtedness at the time outstanding, unless and until the
principal of and interest on the Note then outstanding shall be paid in full. If
there occurs an event of default that has been declared in writing with respect
to any Indebtedness, or in the instrument under which any Indebtedness is
outstanding, permitting the holder of such Indebtedness to accelerate the
maturity thereof, then, unless and until such event of default shall have been
cured or waived or shall have ceased to exist, or all Indebtedness shall have
been paid in full, no payment shall be made in respect of the principal of or
interest on this Note, unless within three (3) months after the happening of
such event of default, the maturity of such Indebtedness shall not have been
accelerated.

      Series "D" Warrant. Contemporaneous with the execution of this note the
Company shall issue a Series "D" Warrant for the purchase of the of 600,000
shares of the Company's common stock at an exercise price of $0.20 per share for
a period of three (3) years, that is beginning October 21,2005, and expiring, if
unexercised, on October 21, 2008.

<PAGE>

      Miscellaneous.

            Transfer of Note. This Note shall not be transferable or assignable
in any manner, except to affiliates of Holder, and no interest shall be pledged
or otherwise encumbered by the Holder without the express written consent of the
Company, and any such attempted disposition of this Note or any portion hereof
shall be of no force or effect.

            Titles and Subtitles. The titles and subtitles used in this Note are
for convenience only and are not to be considered in construing or interpreting
this Note.

            Notices. Any notice required or permitted under this Note shall be
deemed delivered if in writing and delivered personally or three (3) days after
being sent by certified mail, return receipt requested, to the Holder. For
purposes hereof, the address of the Holder shall be Frank Fradella Irrevocable
Trust No. 1, 2251 Drusilla Lane, Suite B, Baton Rouge, Louisiana 70809, Attn.:
Peter Barrios and the address for the Company shall be 1845 Woodall Rogers,
Suite 1020, Dallas, Texas 75201, Attn.: William R. Miertschin. The Company and
the Holder may each change their respective address effective ten (10) days
following notice of such change provided in accordance with this Section 3.3.

            Attorneys' Fees. If any action at law or in equity is necessary to
enforce or interpret the terms of this Note, the prevailing party shall be
entitled to reasonable attorneys' fees, costs and disbursements in addition to
any other relief to which such party may be entitled.

            Amendments and Waivers. This Note may be amended and the observance
of any term of this Note may be waived (either generally or in a particular
instance and either retroactively or prospectively), with the written consent of
the Company and the Holder. Any amendment or waiver effected in accordance with
this Section 3.5 shall be binding upon the Holder of this Note, each future
holder of all such securities and the Company.

            Severability. If one or more provisions of this Note are held to be
unenforceable under applicable law, such provision shall be excluded from this
Note and the balance of the Note shall be interpreted as if such provision were
so excluded and shall be enforceable in accordance with its terms.

            Governing Law. This Note shall be governed by and construed and
enforced in accordance with the laws of the State of Texas, without giving
effect to its conflicts of laws principles.

            Usury. It is the intention of the parties hereto to conform strictly
to applicable usury laws as in effect from time to time during the term of this
Note. Accordingly, if any transaction or transactions contemplated hereby would
be usurious under applicable law (including the laws of the United States of
America, or of any other jurisdiction whose laws may be mandatorily applicable),
then, in that event, notwithstanding anything to the contrary in this Note, it
is agreed as follows: (i) the provisions of this paragraph shall govern and
control; (ii) the aggregate of all interest under applicable laws that is
contracted for, charged or received under this Note shall under no circumstances
exceed the maximum amount of interest allowed by applicable law, and any excess
shall be promptly credited to the Holder by the Company (or, if such
consideration shall have been paid in full, such excess shall be promptly

<PAGE>

refunded to the Holder by the Company) (iii) neither the Company nor any other
person or entity now or hereafter liable in connection with this Note shall be
obligated to pay the amount of such interest to the extent that it is in excess
of the maximum interest permitted by the applicable usury laws; and (iv) the
effective rate of interest shall be ipso facto reduced to the maximum lawful
interest rate.

Date: October 21, 2005                          LOCAL TELECOM SYSTEMS, INC.,
                                                a Nevada corporation


                                                By:
                                                    ----------------------------
                                                Name: William R. Miertschin
                                                Title: Chief Executive Officer