July
      2,
      2007





Dear
      Customer:





As
      a
      valued customer of Pinnatech, Inc. d/b/a Nauticom Internet Services, I wanted
      to
      personally inform you that today North Pittsburgh Systems (NASDQ: NPSI), our
      parent company, has announced plans to merge with Consolidated Communications
      (NASDAQ: CNSL).  This combination will create a stronger
      communications provider to residential and business
      customers.  Specifically, this transaction is about better meeting
      your needs and enabling North Pittsburgh and Consolidated to achieve our full
      potential.  I invite you to read the attached press release on our
      companies’ websites, both of which provide additional details about this
      transaction.





North
      Pittsburgh and Consolidated have a rich history.  Both companies share
      a commitment to and a common vision for the industry and our
      customers.  Through this combination, North Pittsburgh and
      Consolidated will have the features of the largest carriers, boasting in excess
      of 300,000 access lines and 73,000 DSL subscribers.  Additionally, we
      will be positioned to more rapidly deploy new broadband  service
      offerings.  The combined company will have a presence in Pennsylvania,
      Illinois and Texas, allowing us to capitalize on service opportunities for
      customers in these areas while maintaining the strong commitment to excellent
      service that you – our loyal customers – have come to expect.





As
      a
      result of the combined company’s expanded resources, we will be able to offer
      customers enhanced services, including Consolidated’s proven digital TV
      product.  Consolidated is the industry leader in providing competitive
      digital TV services among companies our size and have been providing these
      services for more than two years.  We are very excited about this
      transaction and the opportunities that lie ahead.





The
      transaction is expected to close in the fourth quarter of 2007 or first quarter
      of 2008.  Until then, both companies will remain separate companies,
      and it will be business as usual.  All service contracts will be
      honored and your day-to-day contacts will remain the same.





Providing
      you with the highest quality telecommunications products and services has been,
      and remains, integral to our business.  We are committed to keeping
      you up to date on developments as we make progress towards completing this
      transaction.  In the interim, if you have any questions or wish to
      discuss this further, please feel free to contact your regular company
      representative.





Our
      number one priority will, as always, be maintaining customer satisfaction
      through closing and beyond.  We appreciate your continued confidence
      in our company.





Sincerely,







Harry
      R.
      Brown


Chief
      Executive Officer


North
      Pittsburgh Systems












**Prospectus/Proxy
      Statement**


This
      material is not a substitute for the prospectus/proxy statement Consolidated
      Communications Holdings, Inc and North Pittsburgh Systems, Inc. will file with
      the Securities and Exchange Commission. Investors are urged to read the
      prospectus/proxy statement, which will contain important information, including
      detailed risk factors, when it becomes available. The prospectus/proxy statement
      and other documents which will be filed by Consolidated Communications Holdings,
      Inc. and North Pittsburgh Systems, Inc. with the Securities and Exchange
      Commission will be available free of charge at the SEC's website, www.sec.gov,
      or by directing a request when such a filing is made to Consolidated
      Communications, 121 South 17th Street, Mattoon, IL 61938, Attention: Investor
      Relations; or to North Pittsburgh Systems, Inc., 4008 Gibsonia Road, Gibsonia,
      Pennsylvania 15044, Attention: Investor Relations. The final prospectus/proxy
      statement will be mailed to shareholders of North Pittsburgh Systems,
      Inc.





This
      communication shall not constitute an offer to sell or the solicitation of
      an
      offer to buy securities, nor shall there be any sale of securities in any
      jurisdiction in which such offer, solicitation or sale would be unlawful prior
      to registration or qualification under the securities laws of such
      jurisdiction.





**Proxy
      Solicitation**


Consolidated
      Communications Holdings, Inc and North Pittsburgh Systems, Inc., and certain
      of
      their respective directors, executive officers and other members of management
      and employees are participants in the solicitation of proxies in connection
      with
      the proposed transactions. Information about the directors and executive
      officers of Consolidated Communications Holdings, Inc. is set forth in the
      proxy
      statement for Consolidated Communications Holdings, Inc.’s 2007 annual meeting
      of shareholders. Information about the directors and executive officers of
      North
      Pittsburgh Systems, Inc. is set forth in the company’s Annual Report on Form
      10-K for the year ended December 31, 2006, as amended. Investors may obtain
      additional information regarding the interests of such participants in the
      proposed transactions by reading the prospectus/proxy statement for such
      proposed transactions when it becomes available.






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