Document:

<PAGE>

                                                                   Exhibit 10.93
                       CONSENT PURSUANT TO SECTION 6.2(a)
                                     OF THE
             AGREEMENT AND PLAN OF REORGANIZATION AND CONTRIBUTION

WHEREAS, TeleCorp PCS, Inc. ("Telecorp"), Tritel, Inc. ("Tritel") and AT&T
Wireless Services, Inc. are parties to that certain Agreement and Plan of
Reorganization and Contribution dated as of February 28, 2000 (the "Merger
Agreement");

WHEREAS, TeleCorp desires to issue Senior Subordinated Notes (the "Notes") in an
aggregate principal amount of up to $450,000,000, which Notes are to be
subordinated on a senior subordinated basis by TeleCorp Communications, Inc.;

WHEREAS, inter alia, Sections 6.2(a)(iii)(I) and (M) of the Merger Agreement
restrict TeleCorp's ability to incur additional unsecured indebtedness in an
aggregate amount that exceeds $100,000,000; and

WHEREAS, TeleCorp seeks a consent from Tritel to issue the Notes;

NOW THEREFORE, for other good and valuable consideration:

          Pursuant to Section 6.2(a) of the Merger Agreement, Tritel hereby
consents to the issuance of the Notes by TeleCorp.

          Dated as of July 10, 2000.

                                           Tritel, Inc.

                                           By:/s/ William M. Mounger, II
                                              --------------------------
                                              William M. Mounger, II
                                              Chairman & Chief Executive Officer<PAGE>

                                                                   EXHIBIT 10.94

                                                                  EXECUTION COPY

                               TELECORP PCS, INC

                                 $450,000,000

                   10 5/8% Senior Subordinated Notes due 2010

                  EXCHANGE AND REGISTRATION RIGHTS AGREEMENT

                                                                   July 14, 2000

CHASE SECURITIES INC.
LEHMAN BROTHERS INC.
DEUTSCHE BANK SECURITIES INC.                 ]
c/o Chase Securities Inc.
270 Park Avenue, 4th floor
New York, New York 10017

Ladies and Gentlemen:

          TeleCorp PCS, Inc., a Delaware corporation (the "Company"), proposes
                                                           -------
to issue and sell to Chase Securities Inc. ("CSI"), Lehman Brothers Inc.
                                             ---
("Lehman") and Deutsche Bank Securities Inc. ("Deutsche Bank" and together with
 -------                                       -------------
CSI and Lehman, the "Initial Purchasers"), upon the terms and subject to the
                     ------------------
conditions set forth in a purchase agreement dated July 11, 2000 (the "Purchase
                                                                       --------
Agreement"), $450,000,000 aggregate principal amount at maturity of its 10 5/8%
---------
Senior Subordinated Notes due 2010 (the "Securities") to be guaranteed on a
                                         ----------
senior subordinated basis by TeleCorp Communications, Inc., a subsidiary of the
Company (the "Subsidiary Guarantor").  Capitalized terms used but not defined
              --------------------
herein shall have the meanings given to such terms in the Purchase Agreement.

          As an inducement to the Initial Purchasers to enter into the Purchase
Agreement and in satisfaction of a condition to the obligations of the Initial
Purchasers thereunder, the Company and the Subsidiary Guarantor agree with the
Initial Purchasers, for the benefit of the holders (including the Initial
Purchasers and the Market Maker (as defined herein)) of the Securities, the
Exchange Securities (as defined herein) and the Private Exchange Securities (as
defined herein) (collectively, the "Holders"), as follows:
                                    -------

          1. Registered Exchange Offer.  The Company and the Subsidiary
Guarantor shall (i) prepare and, not later than 60 days following the date of
original issuance of the Securities (the "Issue Date"), file with the Commission
                                          ----------
a registration statement (the "Exchange Offer Registration Statement") on an
                               -------------------------------------
appropriate form under the Securities Act with respect to a proposed offer to
the Holders of the Securities (the "Registered Exchange Offer") who are not
                                    -------------------------
prohibited by applicable law or interpretations thereof by the Commission's
staff from participating in the Registered Exchange Offer to issue and deliver
to such Holders, in exchange for the Securities, a like aggregate principal
amount of debt securities of the Company (the "Exchange Securities") that are
                                               -------------------
identical in all material respects to the Securities, except for the transfer
restrictions and registration rights relating to the Securities, (ii) use their
commercially reasonable efforts to cause the Exchange Offer Registration
Statement to become effective under the Securities Act no later than 180 days
after the Issue Date and the Registered Exchange Offer to be consummated no
later than 210 days after the Issue Date and (iii) keep the Exchange Offer
Registration Statement effective for not less than 30 days (or longer, if
required by applicable law) after the date on which notice of the Registered
Exchange Offer is mailed to the Holders (such period being called the "Exchange
                                                                       --------
Offer Registration Period").  The Exchange Securities will be issued under the
-------------------------
Indenture or an indenture (the "Exchange
                                --------
<PAGE>

Securities Indenture") among the Company, the Subsidiary Guarantor and the
--------------------
Trustee or such other bank or trust company that is reasonably satisfactory to
the Initial Purchasers, as trustee (the "Exchange Securities Trustee"), such
                                         ---------------------------
indenture to be identical in all material respects to the Indenture, except for
the transfer restrictions and registration rights relating to the Securities (as
described above). All references in this Agreement to "Registration Statement"
and "prospectus" shall, except where the context otherwise requires, include any
Registration Statement (or amendment or supplement thereto) and prospectus (or
amendment thereto), respectively, filed with the Commission pursuant to Section
6 of this Agreement.

          Upon the effectiveness of the Exchange Offer Registration Statement,
the Company shall promptly commence the Registered Exchange Offer, it being the
objective of such Registered Exchange Offer to enable each Holder electing to
exchange Securities for Exchange Securities (assuming that such Holder (a) is
not an affiliate of the Company or an Exchanging Dealer (as defined herein) not
complying with the requirements of the next sentence, (b) is not an Initial
Purchaser holding Securities that have, or that are reasonably likely to have,
the status of an unsold allotment in an initial distribution, (c) acquires the
Exchange Securities in the ordinary course of such Holder's business, (d) has no
arrangements or understandings with any person to participate in the
distribution of the Exchange Securities and (e) is not otherwise prohibited by
applicable law or interpretations thereof by the Commission's staff from
participating in the Registered Exchange Offer) and to trade such Exchange
Securities from and after their receipt without any limitations or restrictions
under the Securities Act and without material restrictions under the securities
laws of the several states of the United States.  The Company, the Subsidiary
Guarantor, the Initial Purchasers and each Exchanging Dealer acknowledge that,
pursuant to current interpretations by the Commission's staff of Section 5 of
the Securities Act, (i) each Holder that is a broker-dealer electing to exchange
Securities, acquired for its own account as a result of market-making activities
or other trading activities, for Exchange Securities (an "Exchanging Dealer"),
                                                          -----------------
is required to deliver a prospectus containing substantially the information set
forth in Annex A hereto on the cover, in Annex B hereto in the "Exchange Offer
Procedures" section and the "Purpose of the Exchange Offer" section and in Annex
C hereto in the "Plan of Distribution" section of such prospectus in connection
with a sale of any such Exchange Securities received by such Exchanging Dealer
pursuant to the Registered Exchange Offer and (ii) if an Initial Purchaser
elects to sell Exchange Securities acquired in exchange for Securities
constituting any portion of an unsold allotment, such Initial Purchaser is
required to deliver a prospectus containing the information required by Item 507
and 508 of Regulation S-K under the Securities Act, as applicable, in connection
with such sale.

          If, prior to the consummation of the Registered Exchange Offer, any
Holder holds any Securities acquired by it that have, or that are reasonably
likely to be determined to have, the status of an unsold allotment in an initial
distribution, or any Holder is not entitled to participate in the Registered
Exchange Offer, the Company shall, upon the request of any such Holder,
simultaneously with the delivery of the Exchange Securities in the Registered
Exchange Offer, issue and deliver to any such Holder, in exchange for the
Securities held by such Holder (the "Private Exchange"), a like aggregate
                                     ----------------
principal amount of debt securities of the Company (the "Private Exchange
                                                         ----------------
Securities") that are identical in all material respects to the Exchange
----------
Securities, except for the transfer restrictions relating to such Private
Exchange Securities.  The Private Exchange Securities will be issued under the
same indenture as the Exchange Securities, and the Company shall use
commercially reasonable efforts to cause the Private Exchange Securities to bear
the same CUSIP number as the Exchange Securities.

          In connection with the Registered Exchange Offer, the Company shall:

          (a)  mail to each Holder a copy of the prospectus forming part of the
     Exchange Offer Registration Statement, together with an appropriate letter
     of transmittal and related documents;

          (b)  keep the Registered Exchange Offer open for not less than 30 days
     (or longer, if required by applicable law) after the date on which notice
     of the Registered Exchange Offer is mailed to the Holders;
<PAGE>

          (c)  utilize the services of a depositary (which may be the Trustee or
     an affiliate of the Trustee) for the Registered Exchange Offer with an
     address in the Borough of Manhattan, The City of New York;

          (d)  permit Holders to withdraw tendered Securities at any time prior
     to the close of business, New York City time, on the last business day on
     which the Registered Exchange Offer shall remain open; and

          (e)  otherwise comply in all respects with all laws that are
     applicable to the Registered Exchange Offer.

          As soon as practicable after the close of the Registered Exchange
Offer and any Private Exchange, as the case may be, the Company shall:

          (a)  accept for exchange all Securities validly tendered and not
     withdrawn pursuant to the Registered Exchange Offer and the Private
     Exchange;

          (b)  deliver to the Trustee for cancelation all Securities so accepted
     for exchange; and

          (c)  cause the Trustee or the Exchange Securities Trustee, as the case
     may be, promptly to authenticate and deliver to each Holder, Exchange
     Securities or Private Exchange Securities, as the case may be, equal in
     principal amount to the Securities of such Holder so accepted for exchange.

          The Company shall use its commercially reasonable efforts to keep the
Exchange Offer Registration Statement effective and to amend and supplement the
prospectus contained therein in order to permit such prospectus to be used by
all persons subject to the prospectus delivery requirements of the Securities
Act for such period of time as such persons must comply with such requirements
in order to resell the Exchange Securities; provided that (i) in the case where
                                            --------
such prospectus and any amendment or supplement thereto must be delivered by an
Exchanging Dealer, such period shall be the lesser of 180 days and the date on
which all Exchanging Dealers have sold all Exchange Securities held by them and
(ii) the Company shall make such prospectus and any amendment or supplement
thereto available to any broker-dealer for use in connection with any resale of
any Exchange Securities for a period of not less than 180 days after the
consummation of the Registered Exchange Offer.

          The Indenture or the Exchange Securities Indenture, as the case may
be, shall provide that the Securities, the Exchange Securities and the Private
Exchange Securities shall vote and consent together on all matters as one class
and that none of the Securities, the Exchange Securities or the Private Exchange
Securities will have the right to vote or consent as a separate class on any
matter.

          Interest on each Exchange Security and Private Exchange Security
issued pursuant to the Registered Exchange Offer and in the Private Exchange
will accrue from the last interest payment date on which interest was paid on
the Securities surrendered in exchange therefor or, if no interest has been paid
on the Securities, from the Issue Date.

          Each Holder participating in the Registered Exchange Offer shall be
required to represent to the Company that at the time of the consummation of the
Registered Exchange Offer (i) any Exchange Securities received by such Holder
will be acquired in the ordinary course of business, (ii) such Holder will have
no arrangements or understanding with any person to participate in the
distribution of the Securities or the Exchange Securities within the meaning of
the Securities Act, (iii) such Holder is not an affiliate of the Company or, if
it is such an affiliate, such Holder will comply with the registration and
prospectus delivery requirements of the Securities Act to the extent applicable,
(iv) if such Holder is not a broker-dealer, that it is not engaged in, and does
not intend to engage in, the distribution of the Exchange Securities and (v) if
such Holder is a broker-dealer, that it will receive Exchange Securities for its
own account in exchange for Securities that were acquired as a result of market-
making activities or other trading activities and that it will deliver a
prospectus in connection with any resale of such Exchange Securities.
<PAGE>

          Notwithstanding any other provisions hereof, the Company and the
Subsidiary Guarantor will ensure that (i) any Exchange Offer Registration
Statement and any amendment thereto and any prospectus forming part thereof and
any supplement thereto complies in all material respects with the Securities Act
and the rules and regulations of the Commission thereunder, (ii) any Exchange
Offer Registration Statement and any amendment thereto does not, when it becomes
effective, 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 not misleading and (iii) any prospectus forming part of any Exchange
Offer Registration Statement, and any supplement to such prospectus, does not,
as of the consummation of the Registered Exchange Offer, include an untrue
statement of a material fact or omit to state a material fact necessary in order
to make the statements therein, in the light of the circumstances under which
they were made, not misleading.

          2. Shelf Registration.  If (i) because of any change in applicable
law or interpretations thereof by the Commission's staff the Company is not
permitted to effect the Registered Exchange Offer as contemplated by Section 1
hereof or (ii) any Securities validly tendered pursuant to the Registered
Exchange Offer are not exchanged for Exchange Securities within 210 days after
the Issue Date or (iii) any Initial Purchaser so requests with respect to
Securities or Private Exchange Securities not eligible to be exchanged for
Exchange Securities in the Registered Exchange Offer and held by it following
the consummation of the Registered Exchange Offer or (iv) any applicable law or
interpretations thereof by the Commission's staff do not permit any Holder to
participate in the Registered Exchange Offer or (v) any Holder that participates
in the Registered Exchange Offer does not receive freely transferable Exchange
Securities in exchange for tendered Securities or (vi) the Company so elects,
then the following provisions shall apply:

               (a)  the Company and the Subsidiary Guarantor shall use their
          commercially reasonable efforts to file as promptly as practicable
          (but in no event more than 45 days after so required or requested
          pursuant to this Section 2) with the Commission, and thereafter shall
          use their commercially reasonable efforts to cause to be declared
          effective, a shelf registration statement on an appropriate form under
          the Securities Act relating to the offer and sale of the Transfer
          Restricted Securities (as defined below) by the Holders thereof from
          time to time in accordance with the methods of distribution set forth
          in such registration statement (hereafter, a "Shelf Registration
                                                        ------------------
          Statement" and, together with any Exchange Offer Registration
          --------
          Statement, a "Registration Statement"); provided that no Holder (other
                        ----------------------    --------
          than an Initial Purchaser) shall be entitled to have the Securities
          held by it covered by such Shelf Registration Statement unless such
          Holder agrees in writing to be bound by all the provisions of this
          Agreement applicable to such Holder.

               (b)  The Company and the Subsidiary Guarantor shall use their
          commercially reasonable efforts to keep the Shelf Registration
          Statement continuously effective in order to permit the prospectus
          forming part thereof to be used by Holders of Transfer Restricted
          Securities for a period ending on the earlier of (i) two years from
          the Issue Date or such shorter period that will terminate when all the
          Transfer Restricted Securities covered by the Shelf Registration
          Statement have been sold pursuant thereto and (ii) the date on which
          the Securities become eligible for resale without volume restrictions
          pursuant to Rule 144 under the Securities Act (in any such case, such
          period being called the "Shelf Registration Period").  The Company and
                                   -------------------------
          the Subsidiary Guarantor shall be deemed not to have used their
          commercially reasonable efforts to keep the Shelf Registration
          Statement effective during the requisite period if any of them
          voluntarily take any action that would result in Holders of Transfer
          Restricted Securities covered thereby not being able to offer and sell
          such Transfer Restricted Securities during that period, unless (i)
          such action is required by applicable law or (ii) such action is taken
          by the Company and the Subsidiary Guarantor in good faith and for
          valid business reasons (not including avoidance of their obligations
          hereunder), provided that the Company and the Subsidiary Guarantor
          within 90 days thereafter comply with the requirements of Section 4(j)
          hereof.  Any such period during which the Company and the Subsidiary
          Guarantor fail to keep the Shelf Registration
<PAGE>

          Statement effective and usable for offers and sales of Securities,
          Private Exchange Securities and Exchange Securities is referred to as
          a "Suspension Period". A Suspension Period shall commence on and
             -----------------
          include the date the Company and the Subsidiary Guarantor give notice
          that the Shelf Registration Statement is no longer effective or the
          prospectus included therein is no longer usable for offers and sales
          of Securities, Private Exchange Securities and Exchange Securities and
          shall end on the date when each Holder of Securities, Private Exchange
          Securities and Exchange Securities covered by such Shelf Registration
          Statement either receives the copies of the supplemented or amended
          prospectus contemplated by Section 4(j) hereof or is advised in
          writing by the Company and the Subsidiary Guarantor that use of the
          prospectus may be resumed. Not more than one Suspension Period shall
          be permitted in any period of 360 consecutive days. If one or more
          Suspension Periods occur, the two-year time period referenced above
          shall be extended by the number of days included in each such
          Suspension Period.

               (c)  Notwithstanding any other provisions hereof, the Company and
          the Subsidiary Guarantor will ensure that (i) any Shelf Registration
          Statement and any amendment thereto and any prospectus forming part
          thereof and any supplement thereto complies in all material respects
          with the Securities Act and the rules and regulations of the
          Commission thereunder, (ii) any Shelf Registration Statement and any
          amendment thereto (in either case, other than with respect to
          information included therein in reliance upon or in conformity with
          written information furnished to the Company by or on behalf of any
          Holder specifically for use therein (the "Holders' Information")) does
                                                    --------------------
          not 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 not misleading and (iii) any prospectus forming
          part of any Shelf Registration Statement, and any supplement to such
          prospectus (in either case, other than with respect to Holders'
          Information), does not include an untrue statement of a material fact
          or omit to state a material fact necessary in order to make the
          statements therein, in the light of the circumstances under which they
          were made, not misleading.

          3. Liquidated Damages.  (a)  The parties hereto agree that the
Holders of Transfer Restricted Securities will suffer damages if the Company and
the Subsidiary Guarantor fails to fulfill their obligations under Section 1 or
Section 2, as applicable, and that it would not be feasible to ascertain the
extent of such damages.  Accordingly, if (i) the applicable Registration
Statement is not filed with the Commission on or prior to 60 days after the
Issue Date, (ii) the Exchange Offer Registration Statement or the Shelf
Registration Statement, as the case may be, is not declared effective within 180
days after the Issue Date (or in the case of a Shelf Registration Statement
required to be filed in response to a change in applicable law or
interpretations thereof by the Commission's staff, if later, within 45 days
after publication of the change in law or interpretation), (iii) the Registered
Exchange Offer is not consummated on or prior to 210 days after the Issue Date,
or (iv) the Shelf Registration Statement is filed and declared effective within
180 days after the Issue Date (or in the case of a Shelf Registration Statement
required to be filed in response to a change in applicable law or
interpretations thereof by the Commission's staff, if later, within 45 days
after publication of the change in law or interpretation) but shall thereafter
cease to be effective (at any time that the Company is obligated to maintain the
effectiveness thereof) without being succeeded within 45 days by an additional
Registration Statement filed and declared effective (each such event referred to
in clauses (i) through (iv), a "Registration Default"), the Company and the
                                --------------------
Subsidiary Guarantor will be jointly and severally obligated to pay liquidated
damages to each Holder of Transfer Restricted Securities, during the period of
one or more such Registration Defaults, in an amount equal to    $ 0.192 per
week per $1,000 of principal amount of Transfer Restricted Securities held by
such Holder until (i) the applicable Registration Statement is filed, (ii) the
Exchange Offer Registration Statement is declared effective and the Registered
Exchange Offer is consummated, (iii) the Shelf Registration Statement is
declared effective or (iv) the Shelf Registration Statement again becomes
effective, as the case may be.  Following the cure of all Registration Defaults,
the accrual of liquidated damages will cease.  As used herein, the term
"Transfer Restricted Securities" means (i) each Security until the date on which
such Security has been exchanged for a freely transferable Exchange Security in
the Registered Exchange
<PAGE>

Offer, (ii) each Security or Private Exchange Security until the date on which
it has been effectively registered under the Securities Act and disposed of in
accordance with the Shelf Registration Statement or (iii) each Security or
Private Exchange Security until the date on which it is distributed to the
public pursuant to Rule 144 under the Securities Act or is saleable pursuant to
Rule 144(k) under the Securities Act. Notwithstanding anything to the contrary
in this Section 3(a), the Company and the Subsidiary Guarantor shall not be
required to pay liquidated damages to a Holder of Transfer Restricted Securities
if such Holder failed to comply with its obligations to make the representations
set forth in the second to last paragraph of Section 1 or failed to provide the
information required to be provided by it, if any, pursuant to Section 4(n).

          (b)  The Company shall notify the Trustee and the Paying Agent under
     the Indenture within three business days of the happening of each and every
     Registration Default.  The Company and the Subsidiary Guarantor shall pay
     the liquidated damages due on the Transfer Restricted Securities by
     depositing with the Paying Agent (which may not be the Company for these
     purposes), in trust, for the benefit of the Holders thereof, prior to 10:00
     a.m., New York City time, on the next interest payment date specified by
     the Indenture and the Securities, sums sufficient to pay the liquidated
     damages then due.  The liquidated damages due shall be payable on each
     interest payment date specified by the Indenture and the Securities to the
     record holder entitled to receive the interest payment to be made on such
     date.  Each obligation to pay liquidated damages shall be deemed to accrue
     from and including the date of the applicable Registration Default.

          (c)  The parties hereto agree that the liquidated damages provided for
     in this Section 3 constitute a reasonable estimate of and are intended to
     constitute the sole damages that will be suffered by Holders of Transfer
     Restricted Securities by reason of the failure of (i) the Shelf
     Registration Statement or the Exchange Offer Registration Statement to be
     filed, (ii) the Shelf Registration Statement to remain effective or (iii)
     the Exchange Offer Registration Statement to be declared effective and the
     Registered Exchange Offer to be consummated, in each case to the extent
     required by this Agreement.

          4. Registration Procedures.  In connection with any Registration
Statement, the following provisions shall apply:

          (a)  The Company shall (i) furnish to each Initial Purchaser, prior to
     the filing thereof with the Commission, a copy of the Registration
     Statement and each amendment thereof and each supplement, if any, to the
     prospectus included therein and shall, in its reasonable judgment, reflect
     in each such document, when so filed with the Commission, such comments as
     any Initial Purchaser may reasonably propose; (ii) include  information
     substantially to the effect set forth in Annex A hereto on the cover, in
     Annex B hereto in the "Exchange Offer Procedures" section and the "Purpose
     of the Exchange Offer" section and in Annex C hereto in the "Plan of
     Distribution" section of the prospectus forming a part of the Exchange
     Offer Registration Statement, and include  information substantially to the
     effect set forth in Annex D hereto in the Letter of Transmittal delivered
     pursuant to the Registered Exchange Offer; and (iii) if requested by any
     Initial Purchaser, include the information required by Item 507 or 508 of
     Regulation S-K, as applicable, in the prospectus forming a part of the
     Exchange Offer Registration Statement.

          (b)  The Company shall advise each Initial Purchaser, each Exchanging
     Dealer and the Holders (if applicable) and, if requested by any such
     person, confirm such advice in writing (which advice pursuant to clause
     (ii) through (v) hereof shall be accompanied by an instruction to suspend
     the use of the prospectus until the requisite changes have been made):

                  (i)    when any Registration Statement and any amendment
          thereto has been filed with the Commission and when such Registration
          Statement or any post-effective amendment thereto has become
          effective;
<PAGE>

                  (ii)   of any request by the Commission for amendments or
          supplements to any Registration Statement or the prospectus included
          therein or for additional information;

                  (iii)  of the issuance by the Commission of any stop order
          suspending the effectiveness of any Registration Statement 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 of the Securities, the
          Exchange Securities or the Private Exchange Securities for sale in any
          jurisdiction or the initiation or threatening of any proceeding for
          such purpose; and

                  (v)    of the happening of any event that requires the making
          of any changes so that the Registration Statement and any amendment
          thereto does not, when it becomes effective, 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 not
          misleading or any prospectus forming part of any Registration
          Statement, and any supplement to such prospectus, does not include an
          untrue statement of a material fact or omit to state a material fact
          necessary in order to make the statements therein, in the light of the
          circumstances under which they were made, not misleading.

          (c)  If any event contemplated by clauses (ii) through (v) of Section
     4 occurs during the period for which the Company and the Subsidiary
     Guarantor are required to maintain an effective Registration Statement, the
     Company and the Subsidiary Guarantor will as promptly as is practicable
     prepare and file with the Commission a post-effective amendment to the
     Registration Statement or a supplement to the related prospectus or file
     any other required document so that, as thereafter delivered to purchasers
     of the Securities, Exchange Securities or Private Exchange Securities from
     a Holder, the prospectus will not include an untrue statement of a material
     fact or omit to state a material fact necessary in order to make the
     statements therein, in the light of the circumstances under which they were
     made, not misleading.

          (d)  The Company and the Subsidiary Guarantor will use all
     commercially reasonable efforts to obtain the withdrawal at the earliest
     possible time of any order suspending the effectiveness of any Registration
     Statement.

          (e)  The Company will furnish to each Holder of Transfer Restricted
     Securities included within the coverage of any Shelf Registration
     Statement, without charge, one conformed copy of such Shelf Registration
     Statement and any post-effective amendment thereto, including financial
     statements and schedules and, if any such Holder so requests in writing,
     all exhibits thereto (including those, if any, incorporated by reference)
     and as many conformed copies of such Registration Statement as such Holder
     reasonably requests.

          (f)  The Company will, during the Shelf Registration Period, promptly
     deliver to each Holder of Transfer Restricted Securities included within
     the coverage of any Shelf Registration Statement, without charge, as many
     copies of the prospectus (including each preliminary prospectus) included
     in such Shelf Registration Statement and any amendment or supplement
     thereto as such Holder may reasonably request; and the Company and the
     Subsidiary Guarantor consent to the use of such prospectus or any amendment
     or supplement thereto by each of the selling Holders of Transfer Restricted
     Securities in connection with the lawful offer and sale of the Transfer
     Restricted Securities covered by such prospectus or any amendment or
     supplement thereto.

          (g)  The Company will furnish to each Initial Purchaser and each
     Exchanging Dealer, and to any other Holder who so requests, without charge,
     one conformed copy of the Exchange Offer Registration Statement and any
     post-effective amendment thereto, including financial statements and
     schedules and, if any Initial Purchaser or Exchanging Dealer or any such
     Holder so requests in writing, all exhibits thereto
<PAGE>

     (including those, if any, incorporated by reference) and as many conformed
     copies of such Exchange Offer Registration Statement as such Holder
     reasonably requests.

          (h)  The Company will, during the Exchange Offer Registration Period
     or the Shelf Registration Period, as applicable, promptly deliver to each
     Initial Purchaser, each Exchanging Dealer and such other persons that are
     required to deliver a prospectus following the Registered Exchange Offer,
     without charge, as many copies of the final prospectus included in the
     Exchange Offer Registration Statement or the Shelf Registration Statement
     and any amendment or supplement thereto as such Initial Purchaser,
     Exchanging Dealer or other persons may reasonably request; and the Company
     and the Subsidiary Guarantor consent to the use of such prospectus or any
     amendment or supplement thereto by any such Initial Purchaser, Exchanging
     Dealer or other persons, as applicable, in connection with any lawful offer
     or sale covered by such prospectus or any amendment or supplement thereto,
     as aforesaid.

          (i)  Prior to the effective date of any Registration Statement, the
     Company and the Subsidiary Guarantor will use commercially reasonable
     efforts to register or qualify, or cooperate with the Holders of
     Securities, Exchange Securities or Private Exchange Securities included
     therein and their respective counsel in connection with the registration or
     qualification of, such Securities, Exchange Securities or Private Exchange
     Securities for offer and sale under the securities or blue sky laws of such
     jurisdictions as any such Holder reasonably requests in writing and do any
     and all other acts or things necessary or advisable to enable the offer and
     sale in such jurisdictions of the Securities, Exchange Securities or
     Private Exchange Securities covered by such Registration Statement;
     provided that the Company and the Subsidiary Guarantor will not be required
     --------
     to qualify generally to do business in any jurisdiction where they are not
     then so qualified or to take any action which would subject them to general
     service of process or to taxation in any such jurisdiction where they are
     not then so subject.

          (j)  The Company and the Subsidiary Guarantor will reasonably
     cooperate with the Holders of Securities, Exchange Securities or Private
     Exchange Securities to facilitate the timely preparation and delivery of
     certificates representing Securities, Exchange Securities or Private
     Exchange Securities to be sold pursuant to any Registration Statement free
     of any restrictive legends and in such denominations and registered in such
     names as the Holders thereof may request in writing prior to sales of
     Securities, Exchange Securities or Private Exchange Securities pursuant to
     such Registration Statement.

          (k)  If any event contemplated by Section 4(b)(ii) through (v) occurs
     during the period for which the Company and the Subsidiary Guarantor are
     required to maintain an effective Registration Statement, the Company and
     the Subsidiary Guarantor will as promptly as is practicable prepare and
     file with the Commission a post-effective amendment to the Registration
     Statement or a supplement to the related prospectus or file any other
     required document so that, as thereafter delivered to purchasers of the
     Securities, Exchange Securities or Private Exchange Securities from a
     Holder, the prospectus will not include an untrue statement of a material
     fact or omit to state a material fact necessary in order to make the
     statements therein, in the light of the circumstances under which they were
     made, not misleading.

          (l)  Not later than the effective date of the applicable Registration
     Statement, the Company will provide a CUSIP number for each of the
     Securities, the Exchange Securities and the Private Exchange Securities, as
     the case may be, and provide the applicable trustee with printed
     certificates for the Securities, the Exchange Securities or the Private
     Exchange Securities, as the case may be, in a form eligible for deposit
     with The Depository Trust Company.

          (m)  The Company and the Subsidiary Guarantor will comply with all
     applicable rules and regulations of the Commission and the Company will
     make generally available to its security holders as soon as practicable
     after the effective date of the applicable Registration Statement an
     earning statement satisfying the provisions of Section 11(a) of the
     Securities Act; provided that in no event shall such earning statement be
                     --------
     delivered later than 45 days after the end of a 12-month period (or 90
<PAGE>

     days, if such period is a fiscal year) beginning with the first month of
     the Company's first fiscal quarter commencing after the effective date of
     the applicable Registration Statement, which statement shall cover such 12-
     month period.

          (n)  The Company and the Subsidiary Guarantor will cause the Indenture
     or the Exchange Securities Indenture, as the case may be, to be qualified
     under the Trust Indenture Act as required by applicable law in a timely
     manner.

          (o)  The Company may require each Holder of Transfer Restricted
     Securities to be registered pursuant to any Shelf Registration Statement to
     furnish to the Company such information concerning the Holder and the
     distribution of such Transfer Restricted Securities as the Company may from
     time to time reasonably require for inclusion in such Shelf Registration
     Statement, and the Company may exclude from such registration the Transfer
     Restricted Securities of any Holder that fails to furnish such information
     within a reasonable time after receiving such request.

          (p)  In the case of a Shelf Registration Statement, each Holder of
     Transfer Restricted Securities to be registered pursuant thereto agrees by
     acquisition of such Transfer Restricted Securities that, upon receipt of
     any notice from the Company pursuant to Section 4(b)(ii) through (v), such
     Holder will discontinue disposition of such Transfer Restricted Securities
     until such Holder's receipt of copies of the supplemental or amended
     prospectus contemplated by Section 4(j) or until advised in writing (the
     "Advice") by the Company that the use of the applicable prospectus may be
     -------
     resumed.  If the Company shall give any notice under Section 4(b)(ii)
     through (v) during the period that the Company is required to maintain an
     effective Registration Statement (the "Effectiveness Period"), such
                                            --------------------
     Effectiveness Period shall be extended by the number of days during such
     period from and including the date of the giving of such notice to and
     including the date when each seller of Transfer Restricted Securities
     covered by such Registration Statement shall have received (x) the copies
     of the supplemental or amended prospectus contemplated by Section 4(j) (if
     an amended or supplemental prospectus is required) or (y) the Advice (if no
     amended or supplemental prospectus is required).

          (q)  In the case of a Shelf Registration Statement, the Company and
     the Subsidiary Guarantor shall enter into such customary agreements
     (including, if requested, an underwriting agreement in customary form and
     reasonably acceptable to the Company) and take all such other action, if
     any, as Holders of a majority in aggregate principal amount of the
     Securities, Exchange Securities and Private Exchange Securities being sold
     or the managing underwriters (if any) shall reasonably request in order to
     facilitate any disposition of Securities, Exchange Securities or Private
     Exchange Securities pursuant to such Shelf Registration Statement.

          (r)  In the case of a Shelf Registration Statement, the Company shall
     (i) make reasonably available for inspection by a representative of, and
     Special Counsel (as defined below) acting for, Holders of a majority in
     aggregate principal amount of the Securities, Exchange Securities and
     Private Exchange Securities being sold and any underwriter participating in
     any disposition of Securities, Exchange Securities or Private Exchange
     Securities pursuant to such Shelf Registration Statement, all relevant
     financial and other records, pertinent corporate documents and properties
     of the Company and its subsidiaries and (ii) use its commercially
     reasonable efforts to have its officers, directors, employees, accountants
     and counsel supply all relevant information reasonably requested by such
     representative, Special Counsel or any such underwriter (an "Inspector") in
                                                                  ---------
     connection with such Shelf Registration Statement.

          (s)  In the case of a Shelf Registration Statement, the Company shall,
     if requested by Holders of a majority in aggregate principal amount of the
     Securities, Exchange Securities and Private Exchange Securities being sold,
     their Special Counsel or the managing underwriters (if any) in connection
     with such Shelf Registration Statement, use its commercially reasonable
     efforts to cause (i) its counsel to deliver an opinion relating to the
     Shelf Registration Statement and the Securities, Exchange Securities or
     Private Exchange Securities, as applicable, substantially in the form
     delivered by counsel for the Company in connection with the issuance and
     sale of the
<PAGE>

     Securities, (ii) its officers to execute and deliver all customary
     documents and certificates requested by Holders of a majority in aggregate
     principal amount of the Securities, Exchange Securities and Private
     Exchange Securities being sold, their Special Counsel or the managing
     underwriters (if any) and (iii) its independent public accountants to
     provide a comfort letter or letters in customary form, subject to receipt
     of appropriate documentation as contemplated, and only if permitted, by
     Statement of Auditing Standards No. 72.

          5. Registration Expenses.  The Company and the Subsidiary Guarantor
will jointly and severally bear all expenses incurred in connection with the
performance of their  obligations under Sections 1, 2, 3 and 4 and the Company
will reimburse the Initial Purchasers and the Holders for the reasonable fees
and disbursements of Cravath, Swaine & Moore (in addition to any local counsel)
unless otherwise instructed by the Holders of a majority in aggregate principal
amount of the Securities, the Exchange Securities and the Private Exchange
Securities to be sold pursuant to each Registration Statement (the "Special
                                                                    -------
Counsel") acting for the Initial Purchasers or Holders in connection therewith.
-------

          6. Market-Making.  (a)  For so long as any of the Securities,
Exchange Securities or Private Exchange Securities are outstanding and (i) Chase
Securities Inc. (the "Market Maker") or any of its affiliates owns any equity
                      ------------
securities of the Company or, upon completion of the merger and contribution
among the Company, Tritel, Inc. and AT&T Wireless Services, Inc. described in
the Agreement and Plan of Reorganization and Contribution dated February 28,
2000 (the "Merger"), TeleCorp-Tritel Holding Company, a Delaware  corporation
           ------
and future parent of the Company after the completion of the Merger, and
proposes to make a market in the Securities, Exchange Securities or Private
Exchange Securities as part of its business in the ordinary course and (ii) in
the judgment of the Market Maker or the Company, applicable law requires the
delivery of a prospectus in connection with such market-making activities, the
following provisions shall apply for the sole benefit of the Market Maker:

                 (i)    The Company and the Subsidiary Guarantor shall (A) on
          the date that the Exchange Offer Registration Statement is filed with
          the Commission, file a registration statement (the "Market-Making
                                                              -------------
          Registration Statement") (which may be the Exchange Offer Registration
          ----------------------
          Statement or the Shelf Registration Statement if permitted by the
          rules and regulations of the Commission) and use their commercially
          reasonable efforts to cause such Market-Making Registration Statement
          to be declared effective by the Commission on or prior to the
          consummation of the Exchange Offer; (B) periodically amend such
          Market-Making Registration Statement so that the information contained
          therein complies with the requirements of Section 10(a) under the
          Securities Act; (C) within 45 days following the end of each of the
          Company's fiscal quarters, file a supplement to the prospectus
          contained in the Market-Making Registration Statement that sets forth
          the financial results of the Company for such quarter; (D) amend the
          Market-Making Registration Statement or supplement the related
          prospectus contained therein when necessary to reflect any material
          changes in the information provided therein; and (E) amend the Market-
          Making Registration Statement when required to do so in order to
          comply with Section 10(a)(3) of the Securities Act; provided, however,
                                                              --------  -------
          that (1) prior to filing the Market-Making Registration Statement, any
          amendment thereto or any supplement to the prospectus contained
          therein, the Company will furnish to the Market Maker copies of all
          such documents proposed to be filed, which documents will be subject
          to the review of the Market-Maker and its counsel, (2) the Company and
          the Subsidiary Guarantor will not file the Market-Making Registration
          Statement, any amendment thereto or any supplement to the prospectus
          contained therein to which the Market-Maker and its counsel shall
          reasonably object unless the Company is advised by counsel that such
          Market-Making Registration Statement, amendment or supplement is
          required to be filed in order to maintain the effectiveness of such
          Market-Making Registration Statement and (3) the Company will provide
          the Market Maker and its counsel with copies of the Market-Making
          Registration Statement and each amendment and supplement filed.
<PAGE>

               (ii)   Promptly upon the Company satisfying the eligibility
          criteria for use of Form S-3 under the Securities Act, the Company and
          the Subsidiary Guarantor shall file a post-effective amendment to the
          Market-Making Registration Statement to convert it from a Form S-1 to
          a Form S-3 registration statement.

               (iii)  The Company shall notify the Market-Maker, and, if
          requested by the Market Maker, confirm such advice in writing, (A)
          when any post-effective amendment to the Market-Making Registration
          Statement or any amendment or supplement to the related prospectus has
          been filed, and, with respect to any post-effective amendment, when
          the same has become effective; (B) of any request by the Commission
          for any post-effective amendment to the Market-Making Registration
          Statement, any supplement or amendment to the related prospectus or
          for additional information; (C) the issuance by the Commission of any
          stop order suspending the effectiveness of the Market-Making
          Registration Statement or the initiation of any proceedings for that
          purpose; (D) of the receipt by the Company of any notification with
          respect to the suspension of the qualification of the Securities for
          sale in any jurisdiction or the initiation or threatening of any
          proceedings for such purpose; (E) of the happening of any event that
          causes (1) the Market-Making Registration Statement to contain an
          untrue statement of a material fact or to omit to state a material
          fact required to be stated therein or necessary to make the statements
          therein not misleading or (2) the prospectus contained in the Market
          Making Registration Statement to contain an untrue statement of a
          material fact or omit to state a material fact necessary in order to
          make the statements therein, in the light of the circumstances under
          which they were made, not misleading; and (F) of any advice from a
          nationally recognized statistical rating organization that such
          organization has placed the Company under surveillance or review with
          negative implications or has determined to downgrade the rating of the
          Securities, Exchange Securities or Private Exchange Securities or any
          other debt obligation of the Company whether or not such downgrade
          shall have been publicly announced.

               (iv)   If any event contemplated by Section 6(a)(iii)(B)
          through (E) occurs during the period for which the Company and the
          Subsidiary Guarantor are required to maintain an effective Market-
          Making Registration Statement, the Company and the Subsidiary
          Guarantor shall promptly prepare and file with the Commission a post-
          effective amendment to the Market-Making Registration Statement or a
          supplement to the related prospectus or file any other required
          document so that the prospectus will not include an untrue statement
          of a material fact or omit to state a material fact necessary in order
          to make the statements therein, in the light of the circumstances
          under which they were made, not misleading.

               (v)    In the event of the issuance of any stop order
          suspending the effectiveness of the Market-Making Registration
          Statement or of any order suspending the qualification of the
          Securities, Exchange Securities or Private Exchange Securities for
          sale in any jurisdiction, the Company and the Subsidiary Guarantor
          shall use their commercially reasonable efforts to obtain its
          withdrawal promptly.

               (vi)   The Company shall furnish to the Market Maker, without
          charge, (A) at least one conformed copy of the Market-Making
          Registration Statement and any post-effective amendment thereto and
          (B) as many copies of the related prospectus and any amendment or
          supplement thereto as the Market Maker may reasonably request.

               (vii)  The Company and the Subsidiary Guarantor shall consent
          to the use of the prospectus contained in the Market-Making
          Registration Statement or any amendment or supplement thereto by the
          Market Maker in connection with the lawful offering and sale of the
          Securities, Exchange Securities or Private Exchange Securities.
<PAGE>

                 (viii) For so long as the Securities, Exchange Securities or
          Private Exchange Securities shall be outstanding, the Company shall
          furnish to the Market Maker (A) as soon as practicable after the end
          of each of the Company's fiscal years, the number of copies reasonably
          requested by the Market Maker of the Company's annual report for such
          year, if such report is distributed to the stockholders of the
          Company, (B) as soon as available, the number of copies reasonably
          requested by the Market Maker of each report (including, without
          limitation, reports on Forms 10-K, 10-Q and 8-K) or definitive proxy
          statements (if any) of the Company filed under the Exchange Act or
          mailed to stockholders and (C) any public reports and all reports and
          financial statements furnished by the Company to the Nasdaq National
          Market System or any U.S. national securities exchange or quotation
          service upon which the Securities or Exchange Securities may be listed
          pursuant to requirements of or agreements with such exchange or
          quotation service or to the Commission pursuant to the Exchange Act or
          any rule or regulation of the Commission thereunder.

          (b)  In the case of the Market-Making Registration Statement, the
     Market Maker agrees that, upon receipt of any notice from the Company
     pursuant to clauses (B) through (E) of paragraph 6(a)(iii), the Market
     Maker will discontinue disposition of such Securities, Exchange Securities
     or Private Exchange Securities until the Market Maker's receipt of copies
     of the supplemental or amended prospectus contemplated by Section 6(a)(iv)
     or until advised in writing by the Company that the use of the applicable
     prospectus may be resumed.

          (c)  Prior to the effective date of the Market-Making Registration
     Statement, the Company and the Subsidiary Guarantor will use commercially
     reasonable efforts to register or qualify, or cooperate with the Market
     Maker and its respective counsel in connection with the registration or
     qualification of, such Securities, Exchange Securities or Private Exchange
     Securities for offer and sale under the securities or blue sky laws of such
     jurisdictions as the Market Maker reasonably requests in writing and do any
     and all other acts or things necessary or advisable to enable the offer and
     sale in such jurisdictions of the Securities, Exchange Securities or
     Private Exchange Securities covered by the Market-Making Registration
     Statement; provided that the Company and the Subsidiary Guarantor will not
                --------
     be required to qualify generally to do business in any jurisdiction where
     they are not then so qualified or to take any action which would subject
     them to general service of process or to taxation in any such jurisdiction
     where they are not then so subject.

          (d)  The Company and the Subsidiary Guarantor represent that the
     Market-Making Registration Statement, any post-effective amendments
     thereto, any amendments or supplements to the related prospectus and any
     documents filed by them under the Exchange Act will, when they become
     effective or are filed with the Commission, as the case may be, conform in
     all respects to the requirements of the Securities Act and the Exchange Act
     and the rules and regulations of the Commission thereunder and will not, as
     of the effective date of such Market-Making Registration Statement or post-
     effective amendments and as of the filing date of amendments or supplements
     to such prospectus or filings under the Exchange Act, 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 not
     misleading; provided that no representation or warranty is made as to
                 --------
     information contained in or omitted from the Market-Making Registration
     Statement or the related prospectus in reliance upon and in conformity with
     written information furnished to the Company by the Market Maker
     specifically for inclusion therein, which information the parties hereto
     agree will be limited to the statements concerning the market-making
     activities of the Market Maker to be set forth on the cover page and in the
     "Plan of Distribution" section of the prospectus (the "Market Maker's
                                                            --------------
     Information").
     -----------

          (e)  At the time of effectiveness of the Market-Making Registration
     Statement and concurrently with each time the Market-Making Registration
     Statement or the related prospectus shall be amended or such prospectus
     shall be supplemented, the Company shall (if reasonably requested by the
     Market Maker) furnish the Market
<PAGE>

     Maker and its counsel with a certificate of its Chief Executive Officer and
     its Executive Vice President and Chief Financial Officer to the effect
     that:

                 (i)    the Market-Making Registration Statement has been
          declared effective;

                 (ii)   in the case of an amendment or supplement, such
          amendment has become effective under the Securities Act as of the date
          and time specified in such certificate, if applicable, such amendment
          or supplement to the prospectus was filed with the Commission pursuant
          to the subparagraph of Rule 424(b) under the Securities Act specified
          in such certificate on the date specified therein;

                 (iii)  to the knowledge of such officers, no stop order
          suspending the effectiveness of the Market-Making Registration
          Statement has been issued and no proceeding for that purpose is
          pending or threatened by the Commission; and

                 (iv)   such officers have carefully examined (A) the Market-
          Making Registration Statement and, in the case of an amendment, such
          amendment, and as of the date of such Market-Making Registration
          Statement or amendment, as applicable, the Market-Making Registration
          Statement, as amended, if applicable, did not include any untrue
          statement of a material fact and did not omit to state a material fact
          required to be stated therein or necessary to make the statements
          therein not misleading and (B) the related prospectus, and, in the
          case of a supplement, such supplement, and as of the date of such
          prospectus or supplement, as applicable, such prospectus, as
          supplemented, if applicable, did not include an untrue statement of a
          material fact or omit to state a material fact necessary in order to
          make the statements therein, in the light of the circumstances under
          which they were made, not misleading.

          (f)  At the time of effectiveness of the Market-Making Registration
     Statement and concurrently with each time the Market-Making Registration
     Statement or the related prospectus shall be amended or such prospectus
     shall be supplemented, the Company shall (if requested by the Market Maker)
     furnish the Market Maker and its counsel with the written opinion of
     counsel for the Company satisfactory to the Market Maker to the effect
     that:

                 (i)    the Market-Making Registration Statement has been
          declared effective;

                 (ii)   in the case of an amendment or supplement, such
          amendment has become effective under the Securities Act as of the date
          and time specified in such opinion and such amendment or supplement to
          the prospectus was filed with the Commission pursuant to the
          subparagraph of Rule 424(b) under the Securities Act specified in such
          opinion on the date specified therein;

                 (iii)  to the knowledge of such counsel, no stop order
          suspending the effectiveness of the Market-Making Registration
          Statement has been issued and no proceeding for that purpose is
          pending or threatened by the Commission; and

                 (iv)   such counsel has participated in conferences with
          officers of the Company and independent public accountants for the
          Company at which the contents of such Market-Making Registration
          Statement and prospectus (and, in the case of an amendment or
          supplement, such amendment or supplement) and related matters were
          discussed and has no reason to believe that as of the date of such
          Market-Making Registration Statement, amendment or supplement, as
          applicable, the Market-Making Registration Statement and the
          prospectus, as amended or supplemented, if applicable, contained any
          untrue statement of a material fact or omitted to state a material
          fact required to be stated therein or necessary to make the statements
          therein not misleading.
<PAGE>

          (g)  At the time of effectiveness of the Market-Making Registration
     Statement and concurrently with each time the Market-Making Registration
     Statement or the related prospectus shall be amended or such prospectus
     shall be supplemented to include audited annual financial information, the
     Company shall (if requested by the Market Maker) furnish the Market-Maker
     and its counsel with a letter of PricewaterhouseCoopers LLP (or other
     independent public accountants for the Company of nationally recognized
     standing), in form satisfactory to the Market-Maker, addressed to the
     Market-Maker and dated the date of delivery of such letter, (i) confirming
     that they are independent public accountants within the meaning of the
     Securities Act and are in compliance with the applicable requirements
     relating to the qualification of accountants under Rule 2-01 of Regulation
     S-X of the Commission and, (ii) in all other respects, substantially in the
     form of the letter delivered to the Initial Purchasers pursuant to Section
     5(f) of the Purchase Agreement, with, in the case of an amendment or
     supplement to include audited financial information, such changes as may be
     necessary to reflect the amended or supplemented financial information.

          (h)  The Company hereby agrees to indemnify the Market Maker, and, if
     applicable, contribute to the Market Maker, in accordance with Sections 7
     and 8 of this Agreement.

          (i)  The Company will comply with the provisions of this Section 6 at
     its own expense and will reimburse the Market Maker for its expenses
     associated with this Section 6 (including reasonable fees and expenses of
     counsel).

          (j)  The agreements contained in this Section 6 and the
     representations, warranties and agreements contained in this Agreement
     shall survive all offers and sales of the Securities and shall remain in
     full force and effect, regardless of any termination or cancelation of this
     Agreement or any investigation made by or on behalf of any indemnified
     party.

          (k)  For purposes of this Section 6, any reference to the terms
     "amend", "amendment" or "supplement" with respect to the Market-Making
     Registration Statement or the prospectus contained therein shall be deemed
     to refer to and include the filing under the Exchange Act of any document
     deemed to be incorporated therein by reference.

          7. Indemnification.  (a)  In the event of a Shelf Registration
Statement or in connection with any prospectus delivery pursuant to an Exchange
Offer Registration Statement by an Initial Purchaser or Exchanging Dealer, as
applicable, or in connection with any prospectus delivery by the Market Maker,
the Company and the Subsidiary Guarantor shall jointly and severally indemnify
and hold harmless each Holder (including, without limitation, any such Initial
Purchaser or Exchanging Dealer or the Market Maker), its affiliates, their
respective officers, directors, employees, representatives and agents, and each
person, if any, who controls such Holder within the meaning of the Securities
Act or the Exchange Act (collectively referred to for purposes of this Section 7
and Section 8 as a Holder) from and against any loss, claim, damage or
liability, joint or several, or any action in respect thereof (including,
without limitation, any loss, claim, damage, liability or action relating to
purchases and sales of Securities, Exchange Securities or Private Exchange
Securities), to which that Holder may become subject, whether commenced or
threatened, under the Securities Act, the Exchange Act, any other federal or
state statutory law or regulation, at common law or otherwise, insofar as such
loss, claim, damage, liability or action arises out of, or is based upon, (i)
any untrue statement or alleged untrue statement of a material fact contained in
any such Registration Statement or Market-Making Registration Statement or any
prospectus forming part thereof or in any amendment or supplement thereto, (ii)
the omission or alleged omission to state therein a material fact required to be
stated therein or necessary in order to make the statements therein, in the
light of the circumstances under which they were made, not misleading or (iii)
in the case of the Market Maker, any breach by the Company of its
representations, warranties and agreements set forth in Section 6, and shall
reimburse each Holder promptly upon demand for any legal or other expenses
reasonably incurred by that Holder in connection with investigating or defending
or preparing to defend against or appearing as a third party witness in
connection with any such loss, claim, damage, liability or action as such
expenses are incurred; provided, however, that the Company and the Subsidiary
                       --------  -------
<PAGE>

Guarantor shall not be liable in any such case to the extent that any such loss,
claim, damage, liability or action arises out of, or is based upon, an untrue
statement or alleged untrue statement in, or omission or alleged omission from,
any of such documents in reliance upon and in conformity with any Holders'
Information or Market Maker's Information; and provided, further that with
                                               --------  -------
respect to any such untrue statement in or omission from any related preliminary
prospectus, the indemnity agreement contained in this Section 7(a) shall not
inure to the benefit of any Holder from whom the person asserting any such loss,
claim, damage, liability or action received Securities, Exchange Securities or
Private Exchange Securities to the extent that such loss, claim, damage,
liability or action of or with respect to such Holder results from the fact that
both (i) a copy of the final prospectus was not sent or given to such person at
or prior to the written confirmation of the sale of such Securities, Exchange
Securities or Private Exchange Securities to such person and (ii) the untrue
statement in or omission from the related preliminary prospectus was corrected
in the final prospectus unless, in either case, such failure to deliver the
final prospectus was a result of non-compliance by the Company with Section
4(e), 4(f), 4(g) or 4(h) or Section 6, as applicable.

          (b)  In the event of a Shelf Registration Statement or in connection
with any prospectus delivery by the Market Maker, each Holder (including, if
applicable, the Market Maker) shall indemnify and hold harmless the Company, its
affiliates, their respective officers, directors, employees, representatives and
agents, and each person, if any, who controls the Company within the meaning of
the Securities Act or the Exchange Act (collectively referred to for purposes of
this Section 7(b) and Section 8 as the Company), from and against any loss,
claim, damage or liability, joint or several, or any action in respect thereof,
to which the Company may become subject, whether commenced or threatened, under
the Securities Act, the Exchange Act, any other federal or state statutory law
or regulation, at common law or otherwise, insofar as such loss, claim, damage,
liability or action arises out of, or is based upon, (i) any untrue statement or
alleged untrue statement of a material fact contained in any such Registration
Statement or Market-Making Registration Statement or any prospectus forming part
thereof or in any amendment or supplement thereto or (ii) the omission or
alleged omission to state therein a material fact required to be stated therein
or necessary in order to make the statements therein, in the light of the
circumstances under which they were made, not misleading, but in each case only
to the extent that the untrue statement or alleged untrue statement or omission
or alleged omission was made in reliance upon and in conformity with any
Holders' Information or Market Maker's Information furnished to the Company by
such Holder, and shall reimburse the Company for any legal or other expenses
reasonably incurred by the Company in connection with investigating or defending
or preparing to defend against or appearing as a third party witness in
connection with any such loss, claim, damage, liability or action as such
expenses are incurred; provided, however, that no such Holder shall be liable
                       --------  -------
for any indemnity claims hereunder in excess of the amount of net proceeds
received by such Holder from the sale of Securities, Exchange Securities or
Private Exchange Securities pursuant to such Shelf Registration Statement or
prospectus.

          (c)  Promptly after receipt by an indemnified party under this Section
7 of notice of any claim or the commencement of any action, the indemnified
party shall, if a claim in respect thereof is to be made against the
indemnifying party pursuant to Section 7(a) or 7(b), notify the indemnifying
party in writing of the claim or the commencement of that action; provided,
                                                                  --------
however, that the failure to notify the indemnifying party shall not relieve it
-------
from any liability which it may have under this Section 7 except to the extent
that it has been prejudiced (through the forfeiture of substantive rights or
defenses) by such failure; and provided, further, that the failure to notify the
                               --------  -------
indemnifying party shall not relieve it from any liability which it may have to
an indemnified party otherwise than under this Section 7.  If any such claim or
action shall be brought against an indemnified party, and it shall notify the
indemnifying party thereof, the indemnifying party shall be entitled to
participate therein and, to the extent that it wishes, jointly with any other
similarly notified indemnifying party, to assume the defense thereof with
counsel reasonably satisfactory to the indemnified party.  After notice from the
indemnifying party to the indemnified party of its election to assume the
defense of such claim or action, the indemnifying party shall not be liable to
the indemnified party under this Section 7 for any legal or other expenses
subsequently incurred by the indemnified party in connection with the defense
thereof other than the reasonable costs of investigation; provided, however,
                                                          --------  -------
that an indemnified party shall have the right to employ its own counsel in any
such action, but the fees, expenses and other charges of such counsel for the
indemnified party will be at the expense of such indemnified party unless (i)
the employment of counsel by the
<PAGE>

indemnified party has been authorized in writing by the indemnifying party, (ii)
the indemnified party has reasonably concluded (based upon advice of counsel to
the indemnified party) that there may be legal defenses available to it or other
indemnified parties that are different from or in addition to those available to
the indemnifying party, (iii) a conflict or potential conflict exists (based
upon advice of counsel to the indemnified party) between the indemnified party
and the indemnifying party (in which case the indemnifying party will not have
the right to direct the defense of such action on behalf of the indemnified
party) or (iv) the indemnifying party has not in fact employed counsel
reasonably satisfactory to the indemnified party to assume the defense of such
action within a reasonable time after receiving notice of the commencement of
the action, in each of which cases the reasonable fees, disbursements and other
charges of counsel will be at the expense of the indemnifying party or parties.
It is understood that the indemnifying party or parties shall not, in connection
with any proceeding or related proceedings in the same jurisdiction, be liable
for the reasonable fees, disbursements and other charges of more than one
separate firm of attorneys (in addition to any local counsel) at any one time
for all such indemnified party or parties. Each indemnified party, as a
condition of the indemnity agreements contained in Sections 7(a) and 7(b), shall
use all commercially reasonable efforts to cooperate with the indemnifying party
in the defense of any such action or claim. No indemnifying party shall be
liable for any settlement of any such action effected without its written
consent (which consent shall not be unreasonably withheld), but if settled with
its written consent or if there be a final judgment for the plaintiff in any
such action, the indemnifying party agrees to indemnify and hold harmless any
indemnified party from and against any loss or liability by reason of such
settlement or judgment. No indemnifying party shall, without the prior written
consent of the indemnified party (which consent shall not be unreasonably
withheld), effect any settlement of any pending or threatened proceeding in
respect of which any indemnified party is or could have been a party and
indemnity could have been sought hereunder by such indemnified 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.

          8.  Contribution.  If the indemnification provided for in Section 7 is
unavailable or insufficient to hold harmless an indemnified party under Section
7(a) or 7(b), then each indemnifying party shall, in lieu of indemnifying such
indemnified party, contribute to the amount paid or payable by such indemnified
party as a result of such loss, claim, damage or liability, or action in respect
thereof, (i) in such proportion as shall be appropriate to reflect the relative
benefits received by the Company and the Subsidiary Guarantor from the initial
offering and sale of the Securities, on the one hand, and by a Holder from
receiving Securities, Exchange Securities or Private Exchange Securities, as
applicable, registered under the Securities Act, on the other, or (ii) if the
allocation provided by clause (i) above is not permitted by applicable law, in
such proportion as is appropriate to reflect not only the relative benefits
referred to in clause (i) above but also the relative fault of the Company and
the Subsidiary Guarantor, on the one hand, and such Holder, on the other, with
respect to the statements or omissions that resulted in such loss, claim, damage
or liability, or action in respect thereof, as well as any other relevant
equitable considerations.  The relative fault shall be determined by reference
to, among other things, whether the untrue or alleged untrue statement of a
material fact or the omission or alleged omission to state a material fact
relates to the Company and the Subsidiary Guarantor or information supplied by
the Company and the Subsidiary Guarantor, on the one hand, or to any Holders'
Information or Market Maker's Information supplied by such Holder, on the other,
the intent of the parties and their relative knowledge, access to information
and opportunity to correct or prevent such untrue statement or omission.  The
parties hereto agree that it would not be just and equitable if contributions
pursuant to this Section 8 were to be determined by pro rata allocation or by
any other method of allocation that does not take into account the equitable
considerations referred to herein.  The amount paid or payable by an indemnified
party as a result of the loss, claim, damage or liability, or action in respect
thereof, referred to above in this Section 8 shall be deemed to include, for
purposes of this Section 8, any legal or other expenses reasonably incurred by
such indemnified party in connection with investigating or defending or
preparing to defend any such action or claim.  Notwithstanding the provisions of
this Section 8, an indemnifying party that is a Holder of Securities, Exchange
Securities or Private Exchange Securities shall not be required to contribute
any amount in excess of the amount by which the total price at which the
Securities, Exchange Securities or Private Exchange Securities sold by such
indemnifying party to any purchaser exceeds the amount of any damages which such
indemnifying party has otherwise paid or become liable to pay by reason of any
untrue or alleged untrue statement or
<PAGE>

omission or alleged omission. No person guilty of fraudulent misrepresentation
(within the meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any person who was not guilty of such fraudulent
misrepresentation.

          9.   Rules 144 and 144A.  The Company shall use its commercially
reasonable efforts to file the reports required to be filed by it under the
Securities Act and the Exchange Act in a timely manner and, if at any time the
Company is not required to file such reports, it will, upon the written request
of any Holder of Transfer Restricted Securities or the Market Maker, make
publicly available other information so long as necessary to permit sales of
such Holder's or the Market Maker's securities pursuant to Rules 144 and 144A.
The Company and the Subsidiary Guarantor covenant that they will take such
further action as any Holder of Transfer Restricted Securities or the Market
Maker may reasonably request, all to the extent required from time to time to
enable such Holder or the Market Maker to sell Transfer Restricted Securities
without registration under the Securities Act within the limitation of the
exemptions provided by Rules 144 and 144A (including, without limitation, the
requirements of Rule 144A(d)(4)).  Upon the written request of any Holder of
Transfer Restricted Securities or the Market Maker, the Company and the
Subsidiary Guarantor shall deliver to such Holder or the Market Maker, as
applicable, a written statement as to whether they have complied with such
requirements. Notwithstanding the foregoing, nothing in this Section 8 shall be
deemed to require the Company to register any of its securities pursuant to the
Exchange Act.

          10.  Underwritten Registrations.  If any of the Transfer Restricted
Securities covered by any Shelf Registration Statement are to be sold in an
underwritten offering, the investment banker or investment bankers and manager
or managers that will administer the offering will be selected by the Holders of
a majority in aggregate principal amount of such Transfer Restricted Securities
included in such offering, subject to the consent of the Company (which shall
not be unreasonably withheld or delayed), and such Holders shall be responsible
for all underwriting commissions and discounts in connection therewith.

          No person may participate in any underwritten registration hereunder
unless such person (i) agrees to sell such person's Transfer Restricted
Securities on the basis reasonably provided in any underwriting arrangements
approved by the persons entitled hereunder to approve such arrangements and (ii)
completes and executes all questionnaires, powers of attorney, indemnities,
underwriting agreements and other documents reasonably required under the terms
of such underwriting arrangements.

          11.  Miscellaneous.  (a)  Amendments and Waivers.  No failure or delay
by the Company, the Subsidiary Guarantor, any Holder or the Market Maker in
exercising any right under this Agreement shall operate as a waiver thereof nor
shall any single or partial exercise of any such right or amendment or
discontinuance of steps to enforce any such right preclude any other of further
exercise thereof or the exercise of any other right. The provisions of this
Agreement may not be amended, modified or supplemented, and waivers or consents
to departures from the provisions hereof may not be given, unless the Company
has obtained the written consent of Holders of a majority in aggregate principal
amount of the Securities, the Exchange Securities and the Private Exchange
Securities, taken as a single class (and, with respect to the provisions of
Section 6, the written consent of the Market Maker).  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 whose Securities,
Exchange Securities or Private Exchange Securities are being sold pursuant to a
Registration Statement and that does not directly or indirectly affect the
rights of other Holders may be given by Holders of a majority in aggregate
principal amount of the Securities, the Exchange Securities and the Private
Exchange Securities being sold by such Holders pursuant to such Registration
Statement.

          (b)  Notices. All notices and other communications provided for or
permitted hereunder shall be made in writing by hand-delivery, first-class mail,
telecopier or air courier guaranteeing next-day delivery:

          (1)  if to a Holder, at the most current address given by such Holder
     to the Company in accordance with the provisions of this Section 11(b),
     which address initially is, with respect to each Holder, the address of
     such Holder maintained by the
<PAGE>

     Registrar under the Indenture, with a copy in like manner to Chase
     Securities Inc., Lehman Brothers Inc. and Deutsche Bank Securities Inc;

          (2)  if to an Initial Purchaser, initially at its address set forth in
     the Purchase Agreement; and

          (3)  if to the Company, initially at the address of the Company set
     forth in the Purchase Agreement.

          All such notices and communications shall be deemed to have been duly
given:  when delivered by hand, if personally delivered; one business day after
being delivered to a next-day air courier; five business days after being
deposited in the mail; and when receipt is acknowledged by the recipient's
telecopier machine, if sent by telecopier.

          (c)  Successors And Assigns.  This Agreement shall be binding upon the
Company and its successors and assigns.

          (d)  Counterparts.  This Agreement may be executed in any number of
counterparts (which may be delivered in original form or by telecopier) and by
the parties hereto in separate 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.

          (e)  Definition of Terms.  For purposes of this Agreement, (a) the
term "business day" means any day on which the New York Stock Exchange, Inc. is
open for trading, (b) the term "subsidiary" has the meaning set forth in Rule
405 under the Securities Act and (c) except where otherwise expressly provided,
the term "affiliate" has the meaning set forth in Rule 405 under the Securities
Act.

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

          (g)  GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED
IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

          (h)  Remedies.  In the event of a breach by the Company, any
Subsidiary Guarantor or by any Holder of any of their obligations under this
Agreement, each Holder, the Company or any Subsidiary Guarantor, as the case may
be, in addition to being entitled to exercise all rights granted by law,
including recovery of damages (other than the recovery of damages for a breach
by the Company or any Subsidiary Guarantor of its obligations under Sections 1
or 2 hereof for which liquidated damages have been paid pursuant to Section 3
hereof), will be entitled to specific performance of its rights under this
Agreement.  The Company, the Subsidiary Guarantor and each Holder agree that
monetary damages would not be adequate compensation for any loss incurred by
reason of a breach by each such person of any of the provisions of this
Agreement and hereby further agree that, in the event of any action for specific
performance in respect of such breach, each such person shall waive the defense
that a remedy at law would be adequate.

          (i)  No Inconsistent Agreements.  The Company and each Subsidiary
Guarantor represents, warrants and agrees that (i) it has not entered into,
shall not, on or after the date of this Agreement, enter into any agreement that
is inconsistent with the rights granted to the Holders in this Agreement or
otherwise conflicts with the provisions hereof, (ii) it has not previously
entered into any agreement which remains in effect granting any registration
rights with respect to any of its debt securities to any person and (iii) (with
respect to the Company) without limiting the generality of the foregoing,
without the written consent of the Holders of a majority in aggregate principal
amount of the then outstanding Transfer Restricted Securities and the Market
Maker, it shall not grant to any person the right to request the Company to
register any debt securities of the Company under the Securities Act unless the
rights so granted are not in conflict or inconsistent with the provisions of
this Agreement.

          (j)  No Piggyback on Registrations.  Neither the Company nor any of
its security holders (other than the Holders of Transfer Restricted Securities
in such capacity) shall
<PAGE>

have the right to include any securities of the Company in any Shelf
Registration or Registered Exchange Offer other than Transfer Restricted
Securities.

          (k)  Severability. The remedies provided herein are cumulative and not
exclusive of any remedies provided by law.  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.
<PAGE>

          Please confirm that the foregoing correctly sets forth the agreement
among the Company, the Subsidiary Guarantor and the Initial Purchasers.

                                Very truly yours,

                                TELECORP PCS, INC.,

                                by /s/ Thomas H. Sullivan
                                   -----------------------------------
                                   Name:  Thomas H. Sullivan
                                   Title: Executive Vice President
                                          and Chief Financial Officer

                                TELECORP COMMUNICATIONS, INC.,

                                by /s/ Thomas H. Sullivan
                                   -----------------------------------
                                   Name:  Thomas H. Sullivan
                                   Title: President, Treasurer and Secretary

Accepted:

CHASE SECURITIES INC.,

by /s/ R. David McDonough
   ---------------------------
   Name:  R. David McDonough
   Title: Vice President

LEHMAN BROTHERS INC.,

by /s/ Perry Hoffmeister
   ---------------------------
   Name:  Perry Hoffmeister
   Title: Managing Director

DEUTSCHE BANK SECURITIES INC.,

by /s/ Thomas D. Dale
   ----------------------------
   Name:  Thomas D. Dale
   Title: Managing Director
<PAGE>

                                                                         ANNEX A

          Each broker-dealer that receives Exchange Securities for its own
account pursuant to the Registered Exchange Offer must acknowledge that it will
deliver a prospectus in connection with any resale of such Exchange Securities.
The Letter of Transmittal states that by so acknowledging and by delivering a
prospectus, a broker-dealer will not be deemed to admit that it is an
"underwriter" within the meaning of the Securities Act.  This Prospectus, as it
may be amended or supplemented from time to time, may be used by a broker-dealer
in connection with resales of Exchange Securities received in exchange for
Securities where such Securities were acquired by such broker-dealer as a result
of market-making activities or other trading activities.  The Company has agreed
that, for a period of 180 days after the expiration of the Exchange Offer, it
will make this Prospectus available to any broker-dealer for use in connection
with any such resale.  See "Plan of Distribution".
<PAGE>

                                                                         ANNEX B
          Each broker-dealer that receives Exchange Securities for its own
account in exchange for Securities, where such Securities were acquired by such
broker-dealer as a result of market-making activities or other trading
activities, must acknowledge that it will deliver a prospectus in connection
with any resale of such Exchange Securities.  See "Plan of Distribution".
<PAGE>

                                                                         ANNEX C

                              PLAN OF DISTRIBUTION

          Each broker-dealer that receives Exchange Securities for its own
account pursuant to the Registered Exchange Offer must acknowledge that it will
deliver a prospectus in connection with any resale of such Exchange Securities.
This Prospectus, as it may be amended or supplemented from time to time, may be
used by a broker-dealer in connection with resales of Exchange Securities
received in exchange for Securities where such Securities were acquired as a
result of market-making activities or other trading activities.  The Company has
agreed that, for a period of 180 days after the expiration of the Exchange
Offer, it will make this prospectus, as amended or supplemented, available to
any broker-dealer for use in connection with any such resale.  In addition,
until [    ], all dealers effecting transactions in the Exchange Securities may
be required to deliver a prospectus.

          The Company will not receive any proceeds from any sale of Exchange
Securities by broker-dealers.  Exchange Securities received by broker-dealers
for their own account pursuant to the Registered Exchange Offer may be sold from
time to time in one or more transactions in the over-the-counter market, in
negotiated transactions, through the writing of options on the Exchange
Securities or a combination of such methods of resale, at market prices
prevailing at the time of resale, at prices related to such prevailing market
prices or at negotiated prices.  Any such resale may be made directly to
purchasers or to or through brokers or dealers who may receive compensation in
the form of commissions or concessions from any such broker-dealer or the
purchasers of any such Exchange Securities.  Any broker-dealer that resells
Exchange Securities that were received by it for its own account pursuant to the
Registered Exchange Offer and any broker or dealer that participates in a
distribution of such Exchange Securities may be deemed to be an "underwriter"
within the meaning of the Securities Act and any profit on any such resale of
Exchange Securities and any commission or concessions received by any such
persons may be deemed to be underwriting compensation under the Securities Act.
The Letter of Transmittal states that, by acknowledging that it will deliver and
by delivering a prospectus, a broker-dealer will not be deemed to admit that it
is an "underwriter" within the meaning of the Securities Act.

          For a period of 180 days after the expiration of the Exchange Offer
the Company will promptly send additional copies of this Prospectus and any
amendment or supplement to this Prospectus to any broker-dealer that requests
such documents in the Letter of Transmittal.  The Company has agreed to pay all
expenses incident to the Registered Exchange Offer (including the expenses of
one counsel for the Holders of the Securities) other than commissions or
concessions of any broker-dealers and will indemnify the Holders of the
Securities (including any broker-dealers) against certain liabilities, including
liabilities under the Securities Act.
<PAGE>

                                                                         ANNEX D

     [_]  CHECK HERE IF YOU ARE A BROKER-DEALER AND WISH TO RECEIVE 10
     ADDITIONAL COPIES OF THE PROSPECTUS AND 10 COPIES OF ANY AMENDMENTS OR
     SUPPLEMENTS THERETO.

     Name:
     Address:

If the undersigned is not a broker-dealer, the undersigned represents that it is
not engaged in, and does not intend to engage in, a distribution of Exchange
Securities.  If the undersigned is a broker-dealer that will receive Exchange
Securities for its own account in exchange for Securities that were acquired as
a result of market-making activities or other trading activities, it
acknowledges that it will deliver a prospectus in connection with any resale of
such Exchange Securities; however, by so acknowledging and by delivering a
prospectus, the undersigned will not be deemed to admit that it is an
"underwriter" within the meaning of the Securities Act.

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