EXECUTION
      COPY

     

    REGISTRATION
      RIGHTS AGREEMENT

    


    This
      Registration Rights Agreement (this “Agreement”)
      is
      made and entered into as of April 6, 2007, among Vistula Communications
      Services, Inc., a Delaware corporation (the “Company”),
      and
      the purchasers signatory hereto (each such purchaser is a “Purchaser”
and
      collectively, the “Purchasers”).

    


    This
      Agreement is made pursuant to the Securities Purchase Agreement, dated as of
      the
      date hereof among the Company and the Purchasers (the “Purchase
      Agreement”).

    


    The
      Company and the Purchasers hereby agree as follows:

    


    1.
      Definitions

    


    Capitalized
      terms used and not otherwise defined herein that are defined in the Purchase
      Agreement shall have the meanings given such terms in the Purchase
      Agreement.
      As used
      in this Agreement, the following terms shall have the following
      meanings:

    


    “Advice”
shall
      have the meaning set forth in Section 6(d).

    


    “Effectiveness
      Date”
means,
      with respect to the initial Registration Statement required to be filed
      hereunder, the 90th
      calendar
      day (or in the case of a review, the 120th
      calendar
      day) following the date hereof and with respect to any additional Registration
      Statements which may be required pursuant to Section 3(c)(3), the 60th
      calendar
      day following the date on which an additional Registration Statement is required
      to be filed hereunder; provided,
      however,
      in the
      event the Company is notified by the Commission that the above Registration
      Statement will not be reviewed or is no longer subject to further review and
      comments, the Effectiveness Date as to such Registration Statement shall be
      the
      fifth Trading Day following the date on which the Company is so notified if
      such
      date precedes the dates required above.

    


    “Effectiveness
      Period”
shall
      have the meaning set forth in Section 2(a).

    


    “Event”
shall
      have the meaning set forth in Section 2(b).

    


    “Event
      Date”
shall
      have the meaning set forth in Section 2(b).

    


    “Filing
      Date”
means,
      with respect to the initial Registration Statement required hereunder, the
      30th
      calendar
      day following the date hereof and, with respect to any additional Registration
      Statements which may be required pursuant to Section 3(c)(3), the earliest
      practical date on which the Company is permitted by SEC Guidance to file such
      additional Registration Statement related to the Registrable
      Securities.

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    “Holder”
or
      “Holders”
means
      the holder or holders, as the case may be, from time to time of Registrable
      Securities.

    


    “Indemnified
      Party”
shall
      have the meaning set forth in Section 5(c).

    


    “Indemnifying
      Party”
shall
      have the meaning set forth in Section 5(c).

    


    “Initial
      Registration Statement”
means
      the initial Registration Statement filed pursuant to this
      Agreement.

    


    “Initial
      Shares”
means
      a
      number of shares of Common Stock equal to one-third of the number of shares
      of
      Common Stock issued and outstanding and held by non-affiliates of the Company
      immediately prior to the filing date of the Initial Registration
      Statement.

    


    “Losses”
shall
      have the meaning set forth in Section 5(a).

    


    “Placement
      Agent”
shall
      mean Oceana Partners, LLC.

    


    “Plan
      of Distribution”
shall
      have the meaning set forth in Section 2(a). 

    


    “Proceeding”
means
      an action, claim, suit, investigation or proceeding (including, without
      limitation, an investigation or partial proceeding, such as a deposition),
      whether commenced or threatened.

    


    “Prospectus”
means
      the prospectus included in a Registration Statement (including, without
      limitation, a prospectus that includes any information previously omitted from
      a
      prospectus filed as part of an effective registration statement in reliance
      upon
      Rule 430A promulgated under the Securities Act), as amended or supplemented
      by
      any prospectus supplement, with respect to the terms of the offering of any
      portion of the Registrable Securities covered by a Registration Statement,
      and
      all other amendments and supplements to the Prospectus, including post-effective
      amendments, and all material incorporated by reference or deemed to be
      incorporated by reference in such Prospectus.

    


    “Registrable
      Securities”
means
      (i) all of the shares of Common Stock issuable upon conversion in full of the
      Notes, (ii) all Warrant Shares, (iii) the Bonus Shares, (iv) any securities
      issued or issuable upon any stock split, dividend or other distribution,
      recapitalization or similar event with respect to the foregoing, and (v) any
      additional shares issuable in connection with any anti-dilution provisions
      in
      the Notes or Warrants.

    


    “Registration
      Statement”
means
      the registration statements required to be filed hereunder, including the
      Prospectus, amendments and supplements to such registration statement or
      Prospectus, including pre-effective and post-effective amendments, all exhibits
      thereto, and all material incorporated by reference or deemed to be incorporated
      by reference in such registration statement.

     

    
      
        
        

      

      
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    “Rule
      415”
means
      Rule 415 promulgated by the Commission pursuant to the Securities Act, as such
      Rule may be amended or interpreted from time to time, or any similar rule or
      regulation hereafter adopted by the Commission having substantially the same
      purpose and effect as such Rule.

    


    “Rule
      424”
means
      Rule 424 promulgated by the Commission pursuant to the Securities Act, as such
      Rule may be amended or interpreted from time to time, or any similar rule or
      regulation hereafter adopted by the Commission having substantially the same
      purpose and effect as such Rule.

    


    “Selling
      Shareholder Questionnaire”
shall
      have the meaning set forth in Section 3(b).

    


    “SEC
      Guidance”
means
      (i) any publicly-available written or oral guidance, comments, requirements
      or
      requests of the Commission staff and (ii) the Securities Act.

    


    2.
       Shelf
      Registration.

    


    (a)
      On
      or
      prior to each Filing Date, the Company shall prepare and file with the
      Commission a Registration Statement covering the resale of all or such portion
      of the Registrable Securities as permitted by SEC Guidance (provided that the
      Company shall use diligent efforts to advocate with the Commission for the
      registration of all of the Registrable Securities in accordance with the SEC
      Guidance, including without limitation, the Manual of Publicly Available
      Telephone Interpretations D.29) that are not then registered on an effective
      Registration Statement for an offering to be made on a continuous basis pursuant
      to Rule 415. The Registration Statement shall be on Form SB-2 and shall contain
      (unless otherwise directed by at least an 75% majority in interest of the
      Holders) substantially the “Plan
      of Distribution”
      attached hereto as Annex
      A.
      Subject
      to the terms of this Agreement, the Company shall use its best efforts to cause
      a Registration Statement to be declared effective under the Securities Act
      as
      promptly as possible after the filing thereof, but in any event prior to the
      applicable Effectiveness Date, and shall use its best efforts to keep such
      Registration Statement continuously effective under the Securities Act until
      all
      Registrable Securities covered by such Registration Statement have been sold,
      or
      may be sold without volume restrictions pursuant to Rule 144(k), as determined
      by the counsel to the Company pursuant to a written opinion letter to such
      effect, addressed and acceptable to the Company’s transfer agent and the
      affected Holders (the “Effectiveness
      Period”).
      The
      Company shall telephonically request effectiveness of a Registration Statement
      as of 5:00 p.m. New York City time on a Trading Day. The Company shall
      immediately notify the Holders via facsimile or by e-mail delivery of a “.pdf”
format data file of the effectiveness of a Registration Statement on the same
      Trading Day that the Company telephonically confirms effectiveness with the
      Commission, which shall be the date requested for effectiveness of a
      Registration Statement. The Company shall, by 9:30 a.m. New York City time
      on
      the Trading Day after the Effective Date, file a final Prospectus with the
      Commission as required by Rule 424. Failure to so notify the Holder within
      1
      Trading Day of such notification of effectiveness or failure to file a final
      Prospectus as foresaid shall be deemed an Event under Section 2(b). Notwithstanding
      any other provision of this Agreement and subject to the payment of liquidated
      damages in Section 2(b), if any SEC Guidance sets forth a limitation of the
      number of Registrable Securities permitted to be registered on a particular
      Registration Statement (and notwithstanding that the Company used diligent
      efforts to advocate with the Commission for the registration of all or a greater
      number of Registrable Securities), unless otherwise directed in writing by
      a
      Holder as to its Registrable Securities, the number of Registrable Securities
      to
      be registered on such Registration Statement will first be reduced by
      Registrable Securities represented by Warrant Shares (applied, in the case
      that
      some Warrant Shares may be registered, to the Holders on a pro rata basis based
      on the total number of unregistered Warrant Shares held by such Holders), and
      second by Registrable Securities represented by Conversion Shares (applied,
      in
      the case that some Conversion Shares may be registered, to the Holders on a
      pro
      rata basis based on the total number of unregistered Conversion Shares held
      by
      such Holders).

     

    
      
        
        

      

      
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    (b)
      If:
      (i)
      the Initial Registration Statement is not filed on or prior to its Filing Date
      (if the Company files the Initial Registration Statement without affording
      the
      Holders the opportunity to review and comment on the same as required by Section
      3(a) herein, the Company shall be deemed to have not satisfied this clause
      (i)),
      or (ii) the Company fails to file with the Commission a request for acceleration
      of a Registration Statement in accordance with Rule 461 promulgated under the
      Securities Act, within five Trading Days of the date that the Company is
      notified (orally or in writing, whichever is earlier) by the Commission that
      such Registration Statement will not be “reviewed” or not be subject to further
      review, or (iii) as to, in the aggregate among all Holders on a pro-rata basis
      based on their purchase of the Securities pursuant to the Purchase Agreement,
      a
      Registration Statement registering for resale all of the Initial Shares is
      not
      declared effective by the Commission by the Effectiveness Date of the Initial
      Registration Statement, or (iv) all of the Registrable Securities are not
      registered for resale pursuant to one or more effective Registration Statements
      on or before September 30, 2007, or (v) after the Effectiveness Date of a
      Registration Statement, such Registration Statement ceases for any reason to
      remain continuously effective as to all Registrable Securities included in
      such
      Registration Statement, or the Holders are otherwise not permitted to utilize
      the Prospectus therein to resell such Registrable Securities, for more than
      an
      aggregate of 30 calendar days during any 12-month period (which need not be
      consecutive calendar days) (any such failure or breach being referred to as
      an
“Event”,
      and
      for purposes of clause (i), (iv) or (v) the date on which such Event occurs,
      or
      for purposes of clause (ii) the date on which such five Trading Day period
      is
      exceeded, or for purposes of clause (iii) the date which such 10 calendar day
      period is exceeded, or for purposes of clause (vi) the date on which such 30
      calendar day period, as applicable, is exceeded being referred to as
“Event
      Date”),
      then,
      in addition to any other rights the Holders may have hereunder or under
      applicable law, on each such Event Date and on each monthly anniversary of
      each
      such Event Date (if the applicable Event shall not have been cured by such
      date)
      until the applicable Event is cured, the Company shall pay to each Holder an
      amount in cash, as partial liquidated damages and not as a penalty, equal to
      1.5% of the aggregate purchase price paid by such Holder pursuant to the
      Purchase Agreement for any unregistered Registrable Securities then held by
      such
      Holder. If the Company fails to pay any partial liquidated damages pursuant
      to
      this Section in full within seven days after the date payable, the Company
      will
      pay interest thereon at a rate of 18% per annum (or such lesser maximum amount
      that is permitted to be paid by applicable law) to the Holder, accruing daily
      from the date such partial liquidated damages are due until such amounts, plus
      all such interest thereon, are paid in full. The partial liquidated damages
      pursuant to the terms hereof shall apply on a daily pro rata basis for any
      portion of a month prior to the cure of an Event.

     

    
      
        
        

      

      
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    3.
      Registration
      Procedures

    


    (a)
      Company
      Obligations.
      In
      connection with the Company’s registration obligations hereunder, the Company
      shall:

    


    (1) Not
      less
      than two Trading Days prior to the initial filing of the Registration Statement,
      the Company shall (i) furnish to each Holder copies of the Registration
      Statement proposed to be filed, which Registration Statement will be subject
      to
      the review of such Holders, and (ii) cause its officers and directors, counsel
      and independent certified public accountants to respond to such inquiries as
      shall be necessary, in the reasonable opinion of respective counsel to conduct
      reasonable investigation within the meaning of the Securities Act. The Company
      shall not file the Registration Statement which the Holders of a majority of
      the
      Registrable Securities shall reasonably object in good faith, provided that,
      the
      Company is notified of such objection in writing no later than 2 Trading Days
      after the Holders have been so furnished copies of the Registration
      Statement.

    


    (2)  (i)
      Prepare and file with the Commission such amendments, including post-effective
      amendments, to a Registration Statement and the Prospectus used in connection
      therewith as may be necessary to keep a Registration Statement continuously
      effective as to the applicable Registrable Securities for the Effectiveness
      Period and prepare and file with the Commission such additional Registration
      Statements in order to register for resale under the Securities Act all of
      the
      Registrable Securities; (ii) cause the related Prospectus to be amended or
      supplemented by any required Prospectus supplement (subject to the terms of
      this
      Agreement), and as so supplemented or amended to be filed pursuant to Rule
      424;
      (iii) respond as promptly as reasonably possible to any comments received from
      the Commission with respect to a Registration Statement or any amendment thereto
      and as promptly as reasonably possible provide the Holders true and complete
      copies of all correspondence from and to the Commission relating to a
      Registration Statement; and (iv) comply in all material respects with the
      provisions of the Securities Act and the Exchange Act with respect to the
      disposition of all Registrable Securities covered by a Registration Statement
      during the applicable period in accordance (subject to the terms of this
      Agreement) with the intended methods of disposition by the Holders thereof
      set
      forth in such Registration Statement as so amended or in such Prospectus as
      so
      supplemented.

    


    (3)  If
      during
      the Effectiveness Period, the number of Registrable Securities at any time
      exceeds 100% of the number of shares of Common Stock then registered in a
      Registration Statement, file as soon as reasonably practicable, but in any
      case
      prior to the applicable Filing Date, an additional Registration Statement
      covering the resale by the Holders of not less than the number of such
      Registrable Securities.

     

    
      
        
        

      

      
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    (4)  Notify
      the Holders of Registrable Securities to be sold (which notice shall, pursuant
      to clauses (ii) through (vi) hereof, be accompanied by an instruction to suspend
      the use of the Prospectus until the requisite changes have been made) as
      promptly as reasonably possible (and, in the case of (i)(A) below, not less
      than
      five Trading Days prior to such filing) and (if requested by any such Person)
      confirm such notice in writing no later than one Trading Day following the
      day
      (i)(A) when a Prospectus or any Prospectus supplement or post-effective
      amendment to a Registration Statement is proposed to be filed; (B) when the
      Commission notifies the Company whether there will be a “review” of such
      Registration Statement and whenever the Commission comments in writing on such
      Registration Statement (the Company shall provide true and complete copies
      thereof and all written responses thereto to each of the Holders); and (C)
      with
      respect to a Registration Statement or any post-effective amendment, when the
      same has become effective; (ii) of any request by the Commission or any other
      Federal or state governmental authority for amendments or supplements to a
      Registration Statement or Prospectus or for additional information; (iii) of
      the
      issuance by the Commission or any other federal or state governmental authority
      of any stop order suspending the effectiveness of a Registration Statement
      covering any or all of the Registrable Securities or the initiation of any
      Proceedings for that purpose; (iv) of the receipt by the Company of any
      notification with respect to the suspension of the qualification or exemption
      from qualification of any of the Registrable Securities for sale in any
      jurisdiction, or the initiation or threatening of any Proceeding for such
      purpose; (v) of the occurrence of any event or passage of time that makes the
      financial statements included in a Registration Statement ineligible for
      inclusion therein or any statement made in a Registration Statement or
      Prospectus or any document incorporated or deemed to be incorporated therein
      by
      reference untrue in any material respect or that requires any revisions to
      a
      Registration Statement, Prospectus or other documents so that, in the case
      of a
      Registration Statement or the Prospectus, as the case may be, it will not
      contain any untrue statement of a material fact or omit to state any material
      fact required to be stated therein or necessary to make the statements therein,
      in light of the circumstances under which they were made, not misleading; and
      (vi) the occurrence or existence of any pending corporate development with
      respect to the Company that the Company believes may be material and that,
      in
      the determination of the Company, makes it not in the best interest of the
      Company to allow continued availability of the Registration Statement or
      Prospectus; provided that any and all of such information shall remain
      confidential to each Holder until such information otherwise becomes public,
      unless disclosure by a Holder is required by law; provided,
      further,
      notwithstanding each Holder’s agreement to keep such information confidential,
      the Holders make no acknowledgement that any such information is material,
      non-public information.

    


    (5)  Use
      its
      best efforts to avoid the issuance of, or, if issued, obtain the withdrawal
      of
      (i) any order suspending the effectiveness of a Registration Statement, or
      (ii)
      any suspension of the qualification (or exemption from qualification) of any
      of
      the Registrable Securities for sale in any jurisdiction, at the earliest
      practicable moment.

     

    
      
        
        

      

      
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    (6)  Furnish
      to each Holder, without charge, at least one conformed copy of each such
      Registration Statement and each amendment thereto, including financial
      statements and schedules, all documents incorporated or deemed to be
      incorporated therein by reference to the extent requested by such Person, and
      all exhibits to the extent requested by such Person (including those previously
      furnished or incorporated by reference) promptly after the filing of such
      documents with the Commission.

    


    (7)  Promptly
      deliver to each Holder, without charge, as many copies of the Prospectus or
      Prospectuses (including each form of prospectus) and each amendment or
      supplement thereto as such Persons may reasonably request in connection with
      resales by the Holder of Registrable Securities. Subject to the terms of this
      Agreement, the Company hereby consents to the use of such Prospectus and each
      amendment or supplement thereto by each of the selling Holders in connection
      with the offering and sale of the Registrable Securities covered by such
      Prospectus and any amendment or supplement thereto, except after the giving
      on
      any notice pursuant to Section 3(a)(3).

    


    (8)  The
      Company shall effect a filing with respect to the public offering contemplated
      by each Registration Statement (an “Issuer
      Filing”)
      with
      the National Association of Securities Dealers, Inc. (“NASD”)
      Corporate Financing Department pursuant to NASD Rule 2710(b)(10)(A)(i) within
      one Trading Day of the date that the Registration Statement is first filed
      with
      the Commission and pay the filing fee required by such Issuer Filing. The
      Company shall use commercially reasonable efforts to pursue the Issuer Filing
      until the NASD issues a letter confirming that it does not object to the terms
      of the offering contemplated by the Registration Statement as described in
      the
      Plan of Distribution attached hereto as Annex A.

    


    (9)  Prior
      to
      any resale of Registrable Securities by a Holder, use its commercially
      reasonable efforts to register or qualify or cooperate with the selling Holders
      in connection with the registration or qualification (or exemption from the
      Registration or qualification) of such Registrable Securities for the resale
      by
      the Holder under the securities or Blue Sky laws of such jurisdictions within
      the United States as any Holder reasonably requests in writing, to keep each
      registration or qualification (or exemption therefrom) effective during the
      Effectiveness Period and to do any and all other acts or things reasonably
      necessary to enable the disposition in such jurisdictions of the Registrable
      Securities covered by each Registration Statement; provided, that the Company
      shall not be required to qualify generally to do business in any jurisdiction
      where it is not then so qualified, subject the Company to any material tax
      in
      any such jurisdiction where it is not then so subject or file a general consent
      to service of process in any such jurisdiction.

    


    (10)  If
      requested by the Holders, cooperate with the Holders to facilitate the timely
      preparation and delivery of certificates representing Registrable Securities
      to
      be delivered to a transferee pursuant to a Registration Statement, which
      certificates shall be free, to the extent permitted by the Purchase Agreement,
      of all restrictive legends, and to enable such Registrable Securities to be
      in
      such denominations and registered in such names as any such Holders may
      request.

     

    
      
        
        

      

      
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    (11)  Upon
      the
      occurrence of any event contemplated by this Section 3, as promptly as
      reasonably possible under the circumstances taking into account the Company’s
      good faith assessment of any adverse consequences to the Company and its
      stockholders of the premature disclosure of such event, prepare a supplement
      or
      amendment, including a post-effective amendment, to a Registration Statement
      or
      a supplement to the related Prospectus or any document incorporated or deemed
      to
      be incorporated therein by reference, and file any other required document
      so
      that, as thereafter delivered, neither a Registration Statement nor such
      Prospectus will contain an untrue statement of a material fact or omit to state
      a material fact required to be stated therein or necessary to make the
      statements therein, in light of the circumstances under which they were made,
      not misleading. If
      the
      Company notifies the Holders in accordance with clauses (ii) through (vi) of
      Section 3(a)(4) above to suspend the use of any Prospectus until the requisite
      changes to such Prospectus have been made, then the Holders shall suspend use
      of
      such Prospectus. The Company will use its best efforts to ensure that the use
      of
      the Prospectus may be resumed as promptly as is practicable. The Company shall
      be entitled to exercise its right under this Section 3(a)(11) to suspend the
      availability of a Registration Statement and Prospectus for a period not to
      exceed 20 days (which need not be consecutive days) in any 12 month
      period
      without
      incurring liability for liquidated damages pursuant to Section 2(b) (and
      the
      calendar days during which the Registration Statement is so suspended shall
      not
      count towards the number of calendar days during which the Registration
      Statement is not effective for the purposes of the Section 2(b)). Each violation
      of the Company's obligation not to suspend sales pursuant to the Registration
      Statement longer than permitted pursuant to the proviso of this Paragraph
      3(a)(11) shall be deemed an "Event" and for each such default, Purchaser shall
      be entitled to the payment provisions set forth in Paragraph 2(b).

    


    (12)  Comply
      with all applicable rules and regulations of the Commission.

     

    (b) Obligation
      of the Holders.

    


    (1) Each
      Holder agrees to furnish to the Company a completed Questionnaire in the form
      attached to this Agreement as Annex B (a “Selling
      Shareholder Questionnaire”)
      not
      more than ten Trading Days after the Closing Date. 

    


    (2) The
      Company may require each selling Holder to furnish to the Company a certified
      statement as to the number of shares of Common Stock beneficially owned by
      such
      Holder and, if required by the Commission, the person thereof that has voting
      and dispositive control over the Shares.

    


    (3) During
      any periods that the Company is unable to meet its obligations hereunder with
      respect to the registration of the Registrable Securities solely because any
      Holder fails to furnish the information required by Sections 3(b)(1) or 3(b)(2)
      within three Trading Days of the Company’s request, any liquidated damages that
      are accruing at such time shall be tolled and any Event that may otherwise
      occur
      solely because of such delay shall be suspended, until such information is
      delivered to the Company.

     

    
      
        
        

      

      
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    4.
      Registration
      Expenses.
      All
      fees and expenses incident to the performance of or compliance with this
      Agreement by the Company shall be borne by the Company whether or not any
      Registrable Securities are sold pursuant to the Registration Statement. The
      fees
      and expenses referred to in the foregoing sentence shall include, without
      limitation, (i) all registration and filing fees (including, without limitation,
      fees and expenses (A) with respect to filings required to be made with the
      Trading Market on which the Common Stock is then listed for trading, (B) in
      compliance with applicable state securities or Blue Sky laws reasonably agreed
      to by the Company in writing (including, without limitation, fees and
      disbursements of counsel for the Company in connection with Blue Sky
      qualifications or exemptions of the Registrable Securities and determination
      of
      the eligibility of the Registrable Securities for investment under the laws
      of
      such jurisdictions as requested by the Holders) and (C) if not previously paid
      by the Company in connection with an Issuer Filing, with respect to any filing
      that may be required to be made by any broker through which a Holder intends
      to
      make sales of Registrable Securities with NASD. pursuant to the NASD Rule 2710,
      so long as the broker is receiving no more than a customary brokerage commission
      in connection with such sale, (ii) printing expenses (including, without
      limitation, expenses of printing certificates for Registrable Securities and
      of
      printing prospectuses if the printing of prospectuses is reasonably requested
      by
      the holders of a majority of the Registrable Securities included in a
      Registration Statement), (iii) messenger, telephone and delivery expenses,
      (iv)
      fees and disbursements of counsel for the Company, (v) Securities Act liability
      insurance, if the Company so desires such insurance, and (vi) fees and expenses
      of all other Persons retained by the Company in connection with the consummation
      of the transactions contemplated by this Agreement. In addition, the Company
      shall be responsible for all of its internal expenses incurred in connection
      with the consummation of the transactions contemplated by this Agreement
      (including, without limitation, all salaries and expenses of its officers and
      employees performing legal or accounting duties), the expense of any annual
      audit and the fees and expenses incurred in connection with the listing of
      the
      Registrable Securities on any securities exchange as required hereunder. In
      no
      event shall the Company be responsible for any broker or similar commissions
      or,
      except to the extent provided for in the Transaction Documents, any legal fees
      or other costs of the Holders.

    


    5.
      Indemnification

    


    (a)
       Indemnification
      by the Company.
      The
      Company shall, notwithstanding any termination of this Agreement, indemnify
      and
      hold harmless each Holder, the officers, directors, members, partners, agents,
      brokers (including brokers who offer and sell Registrable Securities as
      principal as a result of a pledge or any failure to perform under a margin
      call
      of Common Stock), investment advisors and employees (and any other Persons
      with
      a functionally equivalent role of a Person holding such titles, notwithstanding
      a lack of such title or any other title) of each of them, each Person who
      controls any such Holder (within the meaning of Section 15 of the Securities
      Act
      or Section 20 of the Exchange Act) and the officers, directors, members,
      shareholders, partners, agents and employees (and any other Persons with a
      functionally equivalent role of a Person holding such titles, notwithstanding
      a
      lack of such title or any other title) of each such controlling Person, to
      the
      fullest extent permitted by applicable law, from and against any and all losses,
      claims, damages, liabilities, costs (including, without limitation, reasonable
      attorneys’ fees) and expenses (collectively, “Losses”),
      as
      incurred, arising out of or relating to any untrue or alleged untrue statement
      of a material fact contained in a Registration Statement, any Prospectus or
      any
      form of prospectus or in any amendment or supplement thereto or in any
      preliminary prospectus, or arising out of or relating to any omission or alleged
      omission of a material fact required to be stated therein or necessary to make
      the statements therein (in the case of any Prospectus or form of prospectus
      or
      supplement thereto, in light of the circumstances under which they were made)
      not misleading, except to the extent, but only to the extent, that (i) such
      untrue statements or omissions are based upon information regarding such Holder
      furnished in writing to the Company by such Holder expressly for use therein,
      or
      to the extent that such information relates to such Holder or such Holder’s
      proposed method of distribution of Registrable Securities and was reviewed
      and
      expressly approved in writing by such Holder expressly for use in a Registration
      Statement, such Prospectus or such form of Prospectus or in any amendment or
      supplement thereto (it being understood that the Holder has approved Annex
      A
      hereto for this purpose) or (ii) in the case of an occurrence of an event of
      the
      type specified in Section 3(a)(3)(ii)-(vi), the use by such Holder of an
      outdated or defective Prospectus after the Company has notified such Holder
      in
      writing that the Prospectus is outdated or defective and prior to the receipt
      by
      such Holder of the Advice contemplated in Section 6(d). The Company shall notify
      the Holders promptly of the institution, threat or assertion of any Proceeding
      arising from or in connection with the transactions contemplated by this
      Agreement of which the Company is aware.

     

    
      
        
        

      

      
        -9-

        
          

        

      

      
        
        

      

    

    


    (b)
       Indemnification
      by Holders.
      Each
      Holder shall, severally and not jointly, indemnify and hold harmless the
      Company, its directors, officers, agents and employees, each Person who controls
      the Company (within the meaning of Section 15 of the Securities Act and Section
      20 of the Exchange Act), and the directors, officers, agents or employees of
      such controlling Persons, to the fullest extent permitted by applicable law,
      from and against all Losses, as incurred, to the extent arising out of or based
      solely upon: (x) such Holder’s failure to comply with the prospectus delivery
      requirements of the Securities Act provided that the Company has complied with
      its requirements under Section 3(a)(6) to furnish current prospectuses to the
      Holder or (y) any untrue or alleged untrue statement of a material fact
      contained in any Registration Statement, any Prospectus, or any form of
      prospectus, or in any amendment or supplement thereto or in any preliminary
      prospectus, or arising out of or relating to any omission or alleged omission
      of
      a material fact required to be stated therein or necessary to make the
      statements therein not misleading (i) to the extent, but only to the extent,
      that such untrue statement or omission is contained in any information so
      furnished in writing by such Holder to the Company specifically for inclusion
      in
      such Registration Statement or such Prospectus or (ii) to the extent that (1)
      such untrue statements or omissions are based solely upon information regarding
      such Holder furnished in writing to the Company by such Holder expressly for
      use
      therein, or to the extent that such information relates to such Holder or such
      Holder’s proposed method of distribution of Registrable Securities and was
      reviewed and expressly approved in writing by such Holder expressly for use
      in
      the Registration Statement (it being understood that the Holder has approved
      Annex A hereto for this purpose), such Prospectus or such form of Prospectus
      or
      in any amendment or supplement thereto or (2) in the case of an occurrence
      of an
      event of the type specified in Section 3(a)(3)(ii)-(vi), the use by such Holder
      of an outdated or defective Prospectus after the Company has notified such
      Holder in writing that the Prospectus is outdated or defective and prior to
      the
      receipt by such Holder of the Advice contemplated in Section 6(d). In no event
      shall the liability of any selling Holder hereunder be greater in amount than
      the dollar amount of the net proceeds received by such Holder upon the sale
      of
      the Registrable Securities giving rise to such indemnification
      obligation.

     

    
      
        
        

      

      
        -10-

        
          

        

      

      
        
        

      

    

    


    (c)
       Conduct
      of Indemnification Proceedings.
      If any
      Proceeding shall be brought or asserted against any Person entitled to indemnity
      hereunder (an “Indemnified
      Party”),
      such
      Indemnified Party shall promptly notify the Person from whom indemnity is sought
      (the “Indemnifying
      Party”)
      in
      writing, and the Indemnifying Party shall have the right to assume the defense
      thereof, including the employment of counsel reasonably satisfactory to the
      Indemnified Party and the payment of all fees and expenses incurred in
      connection with defense thereof; provided, that the failure of any Indemnified
      Party to give such notice shall not relieve the Indemnifying Party of its
      obligations or liabilities pursuant to this Agreement, except (and only) to
      the
      extent that it shall be finally determined by a court of competent jurisdiction
      (which determination is not subject to appeal or further review) that such
      failure shall have prejudiced the Indemnifying Party.

    


    An
      Indemnified Party shall have the right to employ separate counsel in any such
      Proceeding and to participate in the defense thereof, but the fees and expenses
      of such counsel shall be at the expense of such Indemnified Party or Parties
      unless: (1) the Indemnifying Party has agreed in writing to pay such fees and
      expenses; (2) the Indemnifying Party shall have failed promptly to assume the
      defense of such Proceeding and to employ counsel reasonably satisfactory to
      such
      Indemnified Party in any such Proceeding; or (3) the named parties to any such
      Proceeding (including any impleaded parties) include both such Indemnified
      Party
      and the Indemnifying Party, and such Indemnified Party shall have been advised
      by counsel that a material conflict of interest is likely to exist if the same
      counsel were to represent such Indemnified Party and the Indemnifying Party
      (in
      which case, if such Indemnified Party notifies the Indemnifying Party in writing
      that it elects to employ separate counsel at the expense of the Indemnifying
      Party, the Indemnifying Party shall not have the right to assume the defense
      thereof and the reasonable fees and expenses of one separate counsel shall
      be at
      the expense of the Indemnifying Party). The Indemnifying Party shall not be
      liable for any settlement of any such Proceeding effected without its written
      consent, which consent shall not be unreasonably withheld. No Indemnifying
      Party
      shall, without the prior written consent of the Indemnified Party, effect any
      settlement of any pending Proceeding in respect of which any Indemnified Party
      is a party, unless such settlement includes an unconditional release of such
      Indemnified Party from all liability on claims that are the subject matter
      of
      such Proceeding.

    


    Subject
      to the terms of this Agreement, all reasonable fees and expenses of the
      Indemnified Party (including reasonable fees and expenses to the extent incurred
      in connection with investigating or preparing to defend such Proceeding in
      a
      manner not inconsistent with this Section) which are required to be paid by
      the
      Indemnifying Party pursuant to this Agreement shall be paid to the Indemnified
      Party, as incurred, within ten Trading Days of written notice thereof to the
      Indemnifying Party; provided, that the Indemnified Party shall promptly
      reimburse the Indemnifying Party for that portion of such fees and expenses
      applicable to such actions for which such Indemnified Party is not entitled
      to
      indemnification hereunder, determined based upon the relative faults of the
      parties determined in accordance with Section 5(d).

     

    
      
        
        

      

      
        -11-

        
          

        

      

      
        
        

      

    

    


    (d)
       Contribution.
      If the
      indemnification under Section 5(a) or 5(b) is unavailable to an Indemnified
      Party, then each Indemnifying Party shall in lieu of indemnifying such
      Indemnified party, contribute to the amount paid or payable by such Indemnified
      Party, in such proportion as is appropriate to reflect the relative fault of
      the
      Indemnifying Party and Indemnified Party in connection with the actions,
      statements or omissions that resulted in such Losses as well as any other
      relevant equitable considerations. The relative fault of such Indemnifying
      Party
      and Indemnified Party shall be determined by reference to, among other things,
      whether any action in question, including any untrue or alleged untrue statement
      of a material fact or omission or alleged omission of a material fact, has
      been
      taken or made by, or relates to information supplied by, such Indemnifying
      Party
      or Indemnified Party, and the parties’ relative intent, knowledge, access to
      information and opportunity to correct or prevent such action, statement or
      omission. The amount paid or payable by a party as a result of any Losses shall
      be deemed to include, subject to the limitations set forth in this Agreement,
      any reasonable attorneys’ or other reasonable fees or expenses incurred by such
      party in connection with any Proceeding to the extent such party would have
      been
      indemnified for such fees or expenses if the indemnification provided for in
      this Section was available to such party in accordance with its
      terms.

    


    The
      parties hereto agree that it would not be just and equitable if contribution
      pursuant to this Section 5(d) were determined by pro rata allocation or by
      any
      other method of allocation that does not take into account the equitable
      considerations referred to in the immediately preceding paragraph.
      Notwithstanding the provisions of this Section 5(d), no Holder shall be required
      to contribute, in the aggregate, any amount in excess of the amount by which
      the
      proceeds actually received by such Holder from the sale of the Registrable
      Securities subject to the Proceeding exceeds the amount of any damages that
      such
      Holder has otherwise been required to pay by reason of such untrue or alleged
      untrue statement or omission or alleged omission, except in the case of fraud
      by
      such Holder.

    


    The
      indemnity and contribution agreements contained in this Section are in addition
      to any liability that the Indemnifying Parties may have to the Indemnified
      Parties.

    


    6.
      Miscellaneous

     

    (a)  Remedies.
      In the
      event of a breach by the Company or by a Holder, of any of their obligations
      under this Agreement, each Holder or the Company, as the case may be, in
      addition to being entitled to exercise all rights granted by law and under
      this
      Agreement, including recovery of damages, will be entitled to specific
      performance of its rights under this Agreement. The Company and each Holder
      agree that monetary damages would not provide adequate compensation for any
      losses incurred by reason of a breach by it of any of the provisions of this
      Agreement and hereby further agrees that, in the event of any action for
      specific performance in respect of such breach, it shall waive the defense
      that
      a remedy at law would be adequate.

     

    
      
        
        

      

      
        -12-

        
          

        

      

      
        
        

      

    

    


    (b)  No
      Piggyback on Registrations.
      Except
      as set forth on Schedule
      6(b)
      attached
      hereto, neither the Company nor any of its security holders (other than the
      Holders in such capacity pursuant hereto) may include securities of the Company
      in any Registration Statement other than the Registrable Securities. The Company
      shall not file any other registration statements until all Registrable
      Securities are subject to a Registration Statement declared effective by the
      Commission, provided that this Section 6(b) shall not prohibit the Company
      from
      filing amendments to registration statements already filed.

    


    (c)  Compliance.
      Each
      Holder covenants and agrees that it will comply with the prospectus delivery
      requirements of the Securities Act as applicable to it in connection with sales
      of Registrable Securities pursuant to the Registration Statement.

    


    (d)  Discontinued
      Disposition.
      Each
      Holder agrees by its acquisition of such Registrable Securities that, upon
      receipt of a notice from the Company of the occurrence of any event of the
      kind
      described in Section 3(a)(3), such Holder will forthwith discontinue disposition
      of such Registrable Securities under a Registration Statement until such
      Holder’s receipt of the copies of the supplemented Prospectus and/or amended
      Registration Statement, or until it is advised in writing (the “Advice”)
      by the
      Company that the use of the applicable Prospectus may be resumed, and, in either
      case, has received copies of any additional or supplemental filings that are
      incorporated or deemed to be incorporated by reference in such Prospectus or
      Registration Statement. The Company will use its best efforts to ensure that
      the
      use of the Prospectus may be resumed as promptly as it practicable. The Company
      agrees and acknowledges that any periods during which the Holder is required
      to
      discontinue the disposition of the Registrable Securities hereunder shall be
      subject to the provisions of Section 2(b).

    


    (e)  Piggy-Back
      Registrations.
      If at
      any time during the Effectiveness Period there is not an effective Registration
      Statement covering all of the Registrable Securities and the Company shall
      determine to prepare and file with the Commission a registration statement
      relating to an offering for its own account or the account of others under
      the
      Securities Act of any of its equity securities, other than on Form S-4 or Form
      S-8 (each as promulgated under the Securities Act) or their then equivalents
      relating to equity securities to be issued solely in connection with any
      acquisition of any entity or business or equity securities issuable in
      connection with the stock option or other employee benefit plans, then the
      Company shall send to each Holder a written notice of such determination and,
      if
      within fifteen days after the date of such notice, any such Holder shall so
      request in writing, the Company shall include in such registration statement
      all
      or any part of such Registrable Securities such holder requests to be
      registered; provided, that, the Company shall not be required to register any
      Registrable Securities pursuant to this Section 6(e) that are eligible for
      resale pursuant to Rule 144(k) promulgated under the Securities Act or that
      are
      the subject of a then effective Registration Statement.

    


    (f)  Amendments
      and Waivers.
      The
      provisions of this Agreement, including the provisions of this sentence, may
      not
      be amended, modified or supplemented, and waivers or consents to departures
      from
      the provisions hereof may not be given, unless the same shall be in writing
      and
      signed by the Company and Holders of at least 75% of the then outstanding
      Registrable Securities. If a Registration Statement does not register all of
      the
      Registrable Securities pursuant to a waiver or amendment done in compliance
      with
      the previous sentence, then the number of Registrable Securities to be
      registered for each Holder shall be reduced pro rata among all Holders and
      each
      Holder shall have the right to designate which of its Registrable Securities
      shall be omitted from such Registration Statement. Notwithstanding the
      foregoing, a waiver or consent to depart from the provisions hereof with respect
      to a matter that relates exclusively to the rights of Holders and that does
      not
      directly or indirectly affect the rights of other Holders may be given by
      Holders of all of the Registrable Securities to which such waiver or consent
      relates; provided,
      however,
      that
      the provisions of this sentence may not be amended, modified, or supplemented
      except in accordance with the provisions of the first sentence of this Section
      6(f). 

     

    
      
        
        

      

      
        -13-

        
          

        

      

      
        
        

      

    

    


    (g)  Notices.
      Any and
      all notices or other communications or deliveries required or permitted to
      be
      provided hereunder shall be delivered as set forth in the Purchase Agreement.
      

    


    (h)  Successors
      and Assigns.
      This
      Agreement shall inure to the benefit of and be binding upon the successors
      and
      permitted assigns of each of the parties and shall inure to the benefit of
      each
      Holder. The Company may not assign its rights or obligations hereunder without
      the prior written consent of all of the Holders of the then-outstanding
      Registrable Securities. Each Holder may assign their respective rights hereunder
      in the manner and to the Persons as permitted under the Purchase
      Agreement.

    


    (i)  No
      Inconsistent Agreements.
      Neither
      the Company nor any of its subsidiaries has entered, as of the date hereof,
      nor
      shall the Company or any of its Subsidiaries, on or after the date of this
      Agreement, enter into any agreement with respect to its Securities, that would
      have the effect of impairing the rights granted to the Holders in this Agreement
      or otherwise conflicts with the provisions hereof. Except as set forth on
Schedule
      6(i),
      neither
      the Company nor any of its subsidiaries has previously entered into any
      agreement granting any registration rights with respect to any of its securities
      to any Person that have not been satisfied in full.

    


    (j)  Execution
      and Counterparts.
      This
      Agreement may be executed in any number of counterparts, each of which when
      so
      executed shall be deemed to be an original and, all of which taken together
      shall constitute one and the same Agreement. In the event that any signature
      is
      delivered by facsimile transmission (including, without limitation, an executed
      .PDF version of this Agreement, such signature shall create a valid binding
      obligation of the party executing (or on whose behalf such signature is
      executed) the same with the same force and effect as if such facsimile signature
      were the original thereof.

    


    (k)  Governing
      Law.
      All
      questions concerning the construction, validity, enforcement and interpretation
      of this Agreement shall be determined in accordance with the provisions of
      the
      Purchase Agreement.

    


    (l)  Cumulative
      Remedies.
      The
      remedies provided herein are cumulative and not exclusive of any other remedies
      provided by law.

    


    (m)  Severability.
      If any
      term, provision, covenant or restriction of this Agreement is held by a court
      of
      competent jurisdiction to be invalid, illegal, void or unenforceable, the
      remainder of the terms, provisions, covenants and restrictions set forth herein
      shall remain in full force and effect and shall in no way be affected, impaired
      or invalidated, and the parties hereto shall use their commercially reasonable
      efforts to find and employ an alternative means to achieve the same or
      substantially the same result as that contemplated by such term, provision,
      covenant or restriction. It is hereby stipulated and declared to be the
      intention of the parties that they would have executed the remaining terms,
      provisions, covenants and restrictions without including any of such that may
      be
      hereafter declared invalid, illegal, void or unenforceable.

     

    
      
        
        

      

      
        -14-

        
          

        

      

      
        
        

      

    

    


    (n)  Headings.
      The
      headings in this Agreement are for convenience of reference only and shall
      not
      limit or otherwise affect the meaning hereof.

    


    (o)  Independent
      Nature of Holders’ Obligations and Rights.
      The
      obligations of each Holder hereunder are several and not joint with the
      obligations of any other Holder hereunder, and no Holder shall be responsible
      in
      any way for the performance of the obligations of any other Holder hereunder.
      Nothing contained herein or in any other agreement or document delivered at
      any
      closing, and no action taken by any Holder pursuant hereto or thereto, shall
      be
      deemed to constitute the Holders as a partnership, an association, a joint
      venture or any other kind of entity, or create a presumption that the Holders
      are in any way acting in concert with respect to such obligations or the
      transactions contemplated by this Agreement. Each Holder shall be entitled
      to
      protect and enforce its rights, including without limitation the rights arising
      out of this Agreement, and it shall not be necessary for any other Holder to
      be
      joined as an additional party in any proceeding for such purpose.

    


    ********************

     

    
      
        
        

      

      
        -15-

        
          

        

      

      
        
        

      

    


    


    IN
      WITNESS WHEREOF, the parties have executed this Registration Rights Agreement
      as
      of the date first written above.

    
      	 	 	 
	 	
              VISTULA
                COMMUNICATIONS SERVICES, INC.

            
	 
 	 
 	 
 
	
            	By:  	/s/
              Rupert Galliers-Pratt
	 	
              

              Name:
                Rupert Galliers-Pratt

            
	 	
              Title:
                President and Chief Executive
                Officer

            


    

    
       

      [SIGNATURE
        PAGE OF HOLDERS FOLLOWS]

       

    

    
      
        
        

      

      
        -16-

        
          

        

      

      
        
        

      

    

     

    [SIGNATURE
      PAGE OF HOLDERS TO VISTULA RRA]

     

     

    Name
      of
      Holder: JMG
      Capital Partners, LP

    Signature
      of Authorized Signatory of Holder:
      /s/
      Jonathan Glaser

    Name
      of
      Authorized Signatory: Jonathan
      Glaser

    Title
      of
      Authorized Signatory: Member
      Manager of the General Partner 

     

    
      
        
        

      

      
        -17-

        
          

        

      

      
        
        

      

    


    [SIGNATURE
      PAGE OF HOLDERS TO VISTULA RRA]

     

    Name
      of
      Holder: JMG
      Triton Offshore Fund, Ltd.

    Signature
      of Authorized Signatory of Holder:
      /s/
      Jonathan Glaser

    Name
      of
      Authorized Signatory: Jonathan
      Glaser

    Title
      of
      Authorized Signatory: Member
      Manager of the Investment Manager

     

    
      
        
        

      

      
        -18-

        
          

        

      

      
        
        

      

    


    [SIGNATURE
      PAGE OF HOLDERS TO VISTULA RRA]

     

    Name
      of
      Holder: Bushido
      Capital Master Fund, LP

    Signature
      of Authorized Signatory of Holder:
      /s/
      Ronald S. Dagar

    Name
      of
      Authorized Signatory: Ronald
      S.
      Dagar

    Title
      of
      Authorized Signatory: Director

     

    
      
        
        

      

      
        -19-

        
          

        

      

      
        
        

      

    


    [SIGNATURE
      PAGE OF HOLDERS TO VISTULA RRA]

     

    Name
      of
      Holder: JANA
      Piranha Master Fund, Ltd.

    Signature
      of Authorized Signatory of Holder:
      /s/
      Marc
      Lehmann

    Name
      of
      Authorized Signatory: Marc
      Lehmann

    Title
      of
      Authorized Signatory: Partner,
      JANA Partners LLC

     

    
      
        
        

      

      
        -20-

        
          

        

      

      
        
        

      

    


    [SIGNATURE
      PAGE OF HOLDERS TO VISTULA RRA]

     

    Name
      of
      Holder: Little
      Wing LP

    Signature
      of Authorized Signatory of Holder:
      _/s/
      Parker L. Quillen

    Name
      of
      Authorized Signatory: Parker
      L.
      Quillen

    Title
      of
      Authorized Signatory: Sole
      Managing Member, Quilcap Mgmt., LLC,   

                    
      Quilcap
      Mgmt. LLC as Investment Manager

     

    
      
        
        

      

      
        -21-

        
          

        

      

      
        
        

      

    


    [SIGNATURE
      PAGE OF HOLDERS TO VISTULA RRA]

     

    Name
      of
      Holder: Tradewinds
      Fund Ltd. 

    Signature
      of Authorized Signatory of Holder:
      /s/
      Parker L. Quillen

    Name
      of
      Authorized Signatory: Parker
      L.
      Quillen 

    Title
      of
      Authorized Signatory: Sole
      Managing Member, Quilcap Mgmt., LLC

     

    
      
        
        

      

      
        -22-

        
          

        

      

      
        
        

      

    

     

    [SIGNATURE
      PAGE OF HOLDERS TO VISTULA RRA]

     

    Name
      of
      Holder: Betty
      B.
      Evans

    Signature
      of Authorized Signatory of Holder:
      /s/
      Betty
      B. Evans by Whitney S. Quillen 

    her
      attorney in fact 

    Name
      of
      Authorized Signatory: Whitney
      S. Quillen

    Title
      of
      Authorized Signatory: Power
      of
      Attorney (attorney in fact)

     

    
      
        
        

      

      
        -23-

        
          

        

      

      
        
        

      

    


    [SIGNATURE
      PAGE OF HOLDERS TO VISTULA RRA]

     

    Name
      of
      Holder: GSSF
      Master Fund, LP

    Signature
      of Authorized Signatory of Holder:
      :
      /s/
      E. B.
      Lyon IV

    Name
      of
      Authorized Signatory: E.
      B.
      Lyon IV

    Title
      of
      Authorized Signatory: Authorized
      Agent

     

    
      
        
        

      

      
        -24-

        
          

        

      

      
        
        

      

    

     

    [SIGNATURE
      PAGE OF HOLDERS TO VISTULA RRA]

     

    Name
      of
      Holder: Stratford
      Partners, LP

    Signature
      of Authorized Signatory of Holder:
      /s/
      Chad
      Comiteau

    Name
      of
      Authorized Signatory: Chad
      Comiteau

    Title
      of
      Authorized Signatory: General
      Partner

     

    
      
        
        

      

      
        -25-

        
          

        

      

      
        
        

      

       

    

    ANNEX
      A

    


    Plan
      of Distribution

    


    Each
      Selling Stockholder (the “Selling
      Stockholders”)
      of the
      common stock (“Common
      Stock”)
      of
      Vistula Communications Services, Inc., a Delaware corporation (the “Company”)
      and
      any of their pledgees, assignees and successors-in-interest may, from time
      to
      time, sell any or all of their shares of Common Stock on the Trading Market
      or
      any other stock exchange, market or trading facility on which the shares are
      traded or in private transactions. These sales may be at fixed or negotiated
      prices. A Selling Stockholder may use any one or more of the following methods
      when selling shares:

     

    
      	·  	
              ordinary
                brokerage transactions and transactions in which the broker-dealer
                solicits purchasers;

            


    

     

    
      	·  	
              block
                trades in which the broker-dealer will attempt to sell the shares
                as agent
                but may position and resell a portion of the block as principal to
                facilitate the transaction;

            


    

     

    
      	·  	
              purchases
                by a broker-dealer as principal and resale by the broker-dealer for
                its
                account;

            


    

     

    
      	·  	
              an
                exchange distribution in accordance with the rules of the applicable
                exchange;

            


    

     

    
      	·  	
              privately
                negotiated transactions;

            


    

     

    
      	·  	
              settlement
                of short sales entered into after the date of this prospectus;
                

            


    

     

    
      	·  	
              broker-dealers
                may agree with the Selling Stockholders to sell a specified number
                of such
                shares at a stipulated price per
                share;

            


    

     

    
      	·  	
              a
                combination of any such methods of
                sale;

            


    

     

    
      	·  	
              through
                the writing or settlement of options or other hedging transactions,
                whether through an options exchange or otherwise;
                or

            


    

     

    
      	·  	
              any
                other method permitted pursuant to applicable
                law.

            


    

     

    The
      Selling Stockholders may also sell shares under Rule 144 under the Securities
      Act of 1933, as amended (the “Securities
      Act”),
      if
      available, rather than under this prospectus.

     

    Broker-dealers
      engaged by the Selling Stockholders may arrange for other brokers-dealers to
      participate in sales. Broker-dealers may receive commissions or discounts from
      the Selling Stockholders (or, if any broker-dealer acts as agent for the
      purchaser of shares, from the purchaser) in amounts to be negotiated, but,
      except as set forth in a supplement to this Prospectus, in the case of an agency
      transaction not in excess of a customary brokerage commission in compliance
      with
      NADSR Rule 2440; and in the case of a principal transaction a markup or markdown
      in compliance with NASDR IM-2440. 

     

    
      
        
        

      

      
        -26-

        
          

        

      

      
        
        

      

    

     

    In
      connection with the sale of the Common Stock or interests therein, the Selling
      Stockholders may enter into hedging transactions with broker-dealers or other
      financial institutions, which may in turn engage in short sales of the Common
      Stock in the course of hedging the positions they assume. The Selling
      Stockholders may also sell shares of the Common Stock short and deliver these
      securities to close out their short positions, or loan or pledge the Common
      Stock to broker-dealers that in turn may sell these securities. The Selling
      Stockholders may also enter into option or other transactions with
      broker-dealers or other financial institutions or the creation of one or more
      derivative securities which require the delivery to such broker-dealer or other
      financial institution of shares offered by this prospectus, which shares such
      broker-dealer or other financial institution may resell pursuant to this
      prospectus (as supplemented or amended to reflect such
      transaction).

     

    The
      Selling Stockholders and any broker-dealers or agents that are involved in
      selling the shares may be deemed to be “underwriters” within the meaning of the
      Securities Act in connection with such sales. In such event, any commissions
      received by such broker-dealers or agents and any profit on the resale of the
      shares purchased by them may be deemed to be underwriting commissions or
      discounts under the Securities Act. Each Selling Stockholder has informed the
      Company that it does not have any written or oral agreement or understanding,
      directly or indirectly, with any person to distribute the Common Stock. In
      no
      event shall any broker-dealer receive fees, commissions and markups which,
      in
      the aggregate, would exceed eight percent (8%).

     

    The
      Company is required to pay certain fees and expenses incurred by the Company
      incident to the registration of the shares. The Company has agreed to indemnify
      the Selling Stockholders against certain losses, claims, damages and
      liabilities, including liabilities under the Securities Act. 

     

    Because
      Selling Stockholders may be deemed to be “underwriters” within the meaning of
      the Securities Act, they will be subject to the prospectus delivery requirements
      of the Securities Act. In addition, any securities covered by this prospectus
      which qualify for sale pursuant to Rule 144 under the Securities Act may be
      sold
      under Rule 144 rather than under this prospectus. Each Selling Stockholder
      has
      advised us that they have not entered into any written or oral agreements,
      understandings or arrangements with any underwriter or broker-dealer regarding
      the sale of the resale shares. There is no underwriter or coordinating broker
      acting in connection with the proposed sale of the resale shares by the Selling
      Stockholders.

     

    We
      agreed
      to keep this prospectus effective until the earlier of (i) the date on which
      the
      shares may be resold by the Selling Stockholders without registration and
      without regard to any volume limitations by reason of Rule 144(e) under the
      Securities Act or any other rule of similar effect or (ii) all of the shares
      have been sold pursuant to the prospectus or Rule 144 under the Securities
      Act
      or any other rule of similar effect. The resale shares will be sold only through
      registered or licensed brokers or dealers if required under applicable state
      securities laws. In addition, in certain states, the resale shares may not
      be
      sold unless they have been registered or qualified for sale in the applicable
      state or an exemption from the registration or qualification requirement is
      available and is complied with.

     

    
      
        
        

      

      
        -27-

        
          

        

      

      
        
        

      

    

     

    Under
      applicable rules and regulations under the Exchange Act, any person engaged
      in
      the distribution of the resale shares may not simultaneously engage in market
      making activities with respect to the Common Stock for a period of two business
      days prior to the commencement of the distribution. In addition, the Selling
      Stockholders will be subject to applicable provisions of the Exchange Act and
      the rules and regulations thereunder, including Regulation M, which may limit
      the timing of purchases and sales of shares of the Common Stock by the Selling
      Stockholders or any other person. We will make copies of this prospectus
      available to the Selling Stockholders and have informed them of the need to
      deliver a copy of this prospectus to each purchaser at or prior to the time
      of
      the sale.

     

    
      
        
        

      

      
        -28-

        
          

        

      

      
        
        

      

    


    Annex
      B

     

    VISTULA
      COMMUNICATIONS SERVICES, INC.

     

    Selling
      Securityholder Notice and Questionnaire

     

    The
      undersigned beneficial owner of common stock, par value $0.001 per share (the
      “Common
      Stock”),
      of
      Vistula Communications Services, Inc., a Delaware corporation (the “Company”),
      (the
“Registrable
      Securities”)
      understands that the Company has filed or intends to file with the Securities
      and Exchange Commission (the “Commission”)
      a
      registration statement on Form SB-2 (the “Registration
      Statement”)
      for
      the registration and resale under Rule 415 of the Securities Act of 1933, as
      amended (the “Securities
      Act”),
      of
      the Registrable Securities, in accordance with the terms of the Registration
      Rights Agreement, dated as of April 6, 2007 (the “Registration
      Rights Agreement”),
      among
      the Company and the Purchasers named therein. A copy of the Registration Rights
      Agreement is available from the Company upon request at the address set forth
      below. All capitalized terms not otherwise defined herein shall have the
      meanings ascribed thereto in the Registration Rights Agreement.

     

    Certain
      legal consequences arise from being named as a selling securityholder in the
      Registration Statement and the related prospectus. Accordingly, holders and
      beneficial owners of Registrable Securities are advised to consult their own
      securities law counsel regarding the consequences of being named or not being
      named as a selling securityholder in the Registration Statement and the related
      prospectus.

     

    NOTICE

     

    The
      undersigned beneficial owner (the “Selling
      Securityholder”)
      of
      Registrable Securities hereby elects to include the Registrable Securities
      owned
      by it and listed below in Item 3 (unless otherwise specified under such Item
      3)
      in the Registration Statement.

     

    
      
        
        

      

      
        -29-

        
          

        

      

      
        
        

      

    

    The
      undersigned hereby provides the following information to the Company and
      represents and warrants that such information is accurate:

     

    QUESTIONNAIRE

     

    1. Name.

     

    
      	 	
              (a)

            	
              Full
                Legal Name of Selling Securityholder

            


      	 	 	
            


      	 	 	_______________________________________________________________________


    

     

    
      	 	
              (b)

            	
              Full
                Legal Name of Registered Holder (if not the same as (a) above) through
                which Registrable Securities Listed in Item 3 below are
                held:

            


      	 	 	 


      	 	 	_______________________________________________________________________


    

     

    
      	 	
              (c)

            	
              Full
                Legal Name of Natural Control Person (which means a natural person
                who
                directly you indirectly alone or with others has power to vote or
                dispose
                of the securities covered by the
                questionnaire):

            


      	 	 	 


      	 	 	_______________________________________________________________________


    

     

    2.
      Address for Notices to Selling Securityholder:

     

    
      	_______________________________________________________________________________________ 
	_______________________________________________________________________________________
	_______________________________________________________________________________________ 
	
              Telephone:
                _________________________________________________________________________________________ 

            
	
              Fax:
                ______________________________________________________________________________________________

            
	
              Contact
                Person:
                _____________________________________________________________________________________

            


    

    


    3.
      Beneficial Ownership of Registrable Securities:

     

    
      	 	
              (a)

            	
              Type
                and Principal Amount of Registrable Securities beneficially
                owned:

            


    

    
      	 	 	_______________________________________________________________________


    

    
      	 	 	_______________________________________________________________________


    

    
      	 	 	_______________________________________________________________________


    

    
      	 	 	 


    

     

    
      
        
        

      

      
        -30-

        
          

        

      

      
        
        

      

    


    4.
      Broker-Dealer Status:

     

    
      	 	
              (a)

            	
              Are
                you a broker-dealer?

            


    

     

    Yes
o No
o

     

    
      	 	
              Note:

            	
              If
                yes, the Commission’s staff has indicated that you should be identified as
                an underwriter in the Registration
                Statement.

            


    

     

    
      	 	
              (b)

            	
              Are
                you an affiliate of a
                broker-dealer?

            


    

     

    Yes
o No
o

     

    
      	 	
              (c)

            	
              If
                you are an affiliate of a broker-dealer, do you certify that you
                bought
                the Registrable Securities in the ordinary course of business, and
                at the
                time of the purchase of the Registrable Securities to be resold,
                you had
                no agreements or understandings, directly or indirectly, with any
                person
                to distribute the Registrable
                Securities?

            


    

     

    Yes
o No
o

     

    
      	 	
              Note:

            	
              If
                no, the Commission’s staff has indicated that you should be identified as
                an underwriter in the Registration
                Statement.

            


    

     

    5.
      Beneficial Ownership of Other Securities of the Company Owned by the Selling
      Securityholder.

     

    Except
      as set forth below in this Item 5, the undersigned is not the beneficial or
      registered owner of any securities of the Company other than the Registrable
      Securities listed above in Item 3.

     

    
      	 	
              (a)

            	
              Type
                and Amount of Other Securities beneficially owned by the Selling
                Securityholder:

            


      	 	 	 


      	 	 	_______________________________________________________________________


      	 	 	_______________________________________________________________________


    

     

    
      
        
        

      

      
        -31-

        
          

        

      

      
        
        

      

    


    6.
      Relationships with the Company:

     

    Except
      as set forth below, neither the undersigned nor any of its affiliates, officers,
      directors or principal equity holders (owners of 5% of more of the equity
      securities of the undersigned) has held any position or office or has had any
      other material relationship with the Company (or its predecessors or affiliates)
      during the past three years.

     

    
      	 	
              State
                any exceptions here: 

            
	 	 
	 	
              _____________________________________________________________________________

            
	 	_____________________________________________________________________________


    

     

    The
      undersigned agrees to promptly notify the Company of any inaccuracies or changes
      in the information provided herein that may occur subsequent to the date hereof
      at any time while the Registration Statement remains effective.

     

    By
      signing below, the undersigned consents to the disclosure of the information
      contained herein in its answers to Items 1 through 6 and the inclusion of such
      information in the Registration Statement and the related prospectus
and
      any
      amendments or supplements thereto.
      The
      undersigned understands that such information will be relied upon by the Company
      in connection with the preparation or amendment of the Registration Statement
      and the related prospectus.

     

    IN
      WITNESS WHEREOF the undersigned, by authority duly given, has caused this Notice
      and Questionnaire to be executed and delivered either in person or by its duly
      authorized agent.   

     

    
      	 	 	 
	Dated:	Beneficial Owner:  
	
              
                

              

            	
              
                

              

            
	 	 	 
	
            	By:  	
            
	 	
              

              Name:

            
	 	Title:


    

     

    PLEASE
      FAX A COPY OF THE COMPLETED AND EXECUTED NOTICE AND QUESTIONNAIRE, AND RETURN
      THE ORIGINAL BY OVERNIGHT MAIL, TO:

     

    
      
        
        

      

      
        -32-