Document:

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                                                                     Exhibit 4.9

                         REGISTRATION RIGHTS AGREEMENT

         This REGISTRATION RIGHTS AGREEMENT, dated November 10, 2000 (this
"Agreement"), is entered into among Z-TEL TECHNOLOGIES, INC., a Delaware
corporation (the "Company") and the investors listed on the signature pages
hereto (the "Investors").

         WHEREAS, the Company and the Investors have executed a Stock and
Warrant Purchase Agreement, dated as of October 19, 2000, by and among the
Company and the Investors (the "Stock Purchase Agreement"); and

         WHEREAS, the Company and the Investors wish to agree upon the terms
and conditions on which the Company will provide for registration of the
Registrable Securities (as defined below);

         NOW, THEREFORE, the parties hereto, intending to be legally bound,
hereby agree as follows:

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                                  DEFINITIONS

         "Affiliate" means affiliate, as that term is defined under Rule 144.

         "Commission" means the Securities and Exchange Commission.

         "Common Stock" means the common stock of the Company, par value $0.01
per share.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended.

         "Fund" means The 1818 Fund III, L.P.

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

         "Registrable Securities" means (i) any shares of Common Stock issued
or issuable upon conversion or exchange of the Series E Preferred, (ii) the
shares of

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Common Stock issuable upon exercise of the Warrants, (iii) any Related
Registrable Securities and (iv) any shares of Common Stock owned by an
Investor. As to any particular Registrable Securities, once issued, such
securities shall cease to be Registrable Securities when (a) a Registration
Statement with respect to the sale of such securities shall have become
effective under the Securities Act and such securities shall have been disposed
of in accordance with such Registration Statement, (b) they shall have been
sold as permitted by Rule 144 (or any successor provision) under the Securities
Act and the purchaser thereof does not receive "restricted securities" as
defined in Rule 144, (c) they shall have been otherwise transferred, new
certificates for them not bearing a legend restricting further transfer shall
have been delivered by the Company and subsequent public distribution of them
shall not, in the opinion of counsel for the holders thereof, require
registration of them under the Securities Act or (d) they shall have ceased to
be outstanding.

         "Registration Expenses" means all fees and expenses relating to a
Registration Statement incident to the performance of or compliance with this
Agreement by the Company, including without limitation (i) all registration and
filing fees (including without limitation fees and expenses (x) with respect to
filings required to be made with the National Association of Securities
Dealers, Inc. and (y) in compliance with securities or "blue sky" laws
(including without limitation reasonable fees and disbursements of counsel for
the underwriters or selling holders in connection with "blue sky"
qualifications of the Registrable Securities and determination of the
eligibility of the Registrable Securities for investment under the laws of such
jurisdictions as the managing underwriters, if any, or holders of a majority of
the Registrable Securities being sold may designate)), (ii) printing expenses
(including printing of prospectuses if requested by the holders of a majority
of the Registrable Securities included in any Registration Statement), (iii)
messenger, telephone and delivery expenses, (iv) fees and disbursements of
counsel for the Company, (v) fees and disbursements of independent certified
public accountants of the Company (including the reasonable expenses of any
special audit and "comfort" letters required by or incident to such
performance), (vi) fees and expenses of any "qualified independent underwriter"
or other independent appraiser participating in an offering pursuant to Section
3 of Schedule E to the By-laws of the National Association of Securities
Dealers, Inc., if any, (vii) Securities Act liability insurance if the Company
desires such insurance, (viii) the fees and expenses incurred in connection
with the listing of the securities to be registered on any securities exchange
on which similar securities by the Company are then listed, (ix) fees and
expenses of all other persons retained by the Company, and (x) the reasonable
fees and disbursements, not to exceed a total of $50,000, of not more than one
counsel for the holders of the Registrable Securities chosen by the holders of
a majority of the Registrable Securities being registered; provided, however,
that Registration Expenses will not include underwriting discounts and
commissions relating to the offer and sale of Registrable Securities, all of
which shall be borne by the holders of such Registrable Securities.

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         "Registration Statement" means any Registration Statement under the
Securities Act that covers any of the Registrable Securities pursuant to the
provisions of this Agreement, including without limitation the related
Prospectus, all amendments and supplements to such Registration Statement
(including post-effective amendments), all exhibits and all material
incorporated by reference or deemed to be incorporated by reference in such
Registration Statement.

         "Related Registrable Securities" means, with respect to shares of
Common Stock issuable upon conversion or exchange of the Series E Preferred,
any securities of the Company issued or issuable with respect to such shares of
Common Stock by way of a dividend or stock split or in connection with a
combination of shares, recapitalization, merger, consolidation or other
reorganization or otherwise.

         "Rule 144" means Rule 144 under the Securities Act, as such rule may
be amended from time to time, or any similar rule or regulation hereafter
adopted by the Commission.

         "Securities Act" means the Securities Act of 1933, as amended.

         "Series E Preferred" means the 8% Convertible Preferred Stock, Series
E, of the Company, par value $0.01 per share, issued pursuant to the Stock
Purchase Agreement.

         "Shares" means the shares of equity securities of the Company
outstanding from time to time.

         "Underwritten Offering" means a distribution, registered pursuant to
the Securities Act, in which securities of the Company are sold to an
underwriter for reoffering to the public.

         "Warrants" means the warrants issued to the Investors pursuant to the
Stock Purchase Agreement.

         1.2      Whenever a number or percentage of Registrable Securities is
to be determined hereunder, each then-outstanding Share that is exercisable to
purchase, convertible into or exchangeable for shares of capital stock of the
Company will be deemed to be equal to the number of shares of Common Stock for
which such Share (or the security into which such Share is then convertible) is
then so purchasable, convertible or exercisable.

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                                       II
                    REGISTRATION UNDER SECURITIES ACT, ETC.

         2.1      Shelf Registration

                  (a)      Filing and Effectiveness of Shelf Registration. At
any time after July 6, 2001, at the request of a majority of the holders of the
Registrable Securities, the Company shall file on one occasion an "evergreen"
shelf Registration Statement solely with respect to the Registrable Securities
and pursuant to Rule 415 under the Securities Act (the "Shelf Registration") on
Form S-3 (or such successor form). The Company shall use its reasonable best
efforts to have the Shelf Registration declared effective as soon as
practicable after such filing, and shall use its reasonable best efforts to
keep the Shelf Registration effective and updated, from the date such Shelf
Registration is declared effective until such time as all of the Registrable
Securities shall cease to be Registrable Securities. The holders of Registrable
Securities can request that the Company prepare prospectus supplements to the
Shelf Registration with respect to Underwritten Offerings of Registrable
Securities; provided that the Company shall not be required to (i) prepare
prospectus supplements with respect to more than four completed Underwritten
Offerings of Registrable Securities, (ii) consummate more than one Underwritten
Offering for Registrable Securities in any six-month period, or (iii) prepare a
preliminary prospectus supplement for an Underwritten Offering for Registrable
Securities valued at less than $20 million, based on the estimated offering
price at the time such preliminary prospectus supplement is to be prepared.

                  (b)      Supplements and Amendments; Expenses. The Company
shall supplement or amend, if necessary, the Shelf Registration, as required by
the instructions applicable to such registration form or by the Securities Act
or as reasonably required by the holders of (or any underwriter for) more than
50% of the Registrable Securities, and the Company shall furnish to the Holders
of the Registrable Securities to which the Shelf Registration relates copies of
any such supplement or amendment prior to its being used and/or filed with the
Commission. The Company shall pay all Registration Expenses in connection with
the Shelf Registration, whether or not it becomes effective, and whether all,
none or some of the Registrable Securities are sold pursuant to the Shelf
Registration. In no event shall a Shelf Registration which is an Underwritten
Offering include securities other than Registrable Securities, unless a
majority of the holders of Registrable Securities consent to such inclusion.

                  (c)      Effective Shelf Registration Statement. A Shelf
Registration pursuant to this Section 2.1 shall not be deemed to have been
effected (i) unless a Shelf Registration has become effective and remained
effective in compliance with the provisions of the Securities Act with respect
to the disposition of all Registrable Securities held by the holders of
Registrable Securities requesting such registration and until such time as all
of such Registrable Securities have been disposed of under the Shelf
Registration or (ii) if after it has become effective, the Shelf Registration
is interfered with by any stop order, injunction or other order or requirement
of the Commission or

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other governmental agency or court and has not within a 10-day period
thereafter become effective.

                  (d)      Notification to Company. Holders of Registrable
Securities shall notify the Company before using any prospectus to enable the
Company to determine whether a notice pursuant to Section 2.3(viii) is
necessary.

                  (e)      Selection of Underwriters. The underwriter or
underwriters of each Underwritten Offering of the Registrable Securities shall
be selected by the Fund and shall be reasonably acceptable to the Company.

         2.2      Piggyback Registration .

                  (a)      Right to Include Registrable Securities. If the
Company at any time proposes to register any shares of Common Stock or any
securities convertible into Common Stock under the Securities Act by
registration on any form (other than Forms S-4 or S-8, or any registration
statement filed in connection with a business combination, dividend
reinvestment plan, offering to employees or any successor forms to Forms S-4 or
S-8), whether or not for sale for its own account, it will each such time give
prompt written notice to all holders of Registrable Securities of its intention
to do so and of such holders' rights under this Section 2.2. Upon the written
request of any such holder (a "Requesting Holder") made as promptly as
practicable and in any event within 30 days after the receipt of any such
notice, the Company will use its best efforts to effect the registration under
the Securities Act of all Registrable Securities that the Company has been so
requested to register by the Requesting Holders thereof; provided, however,
that prior to the effective date of the Registration Statement filed in
connection with such registration, immediately upon notification to the Company
from the managing underwriter of the price at which such securities are to be
sold, if such price is below the price that any Requesting Holder shall have
indicated to be acceptable to such Requesting Holder, the Company shall so
advise such Requesting Holder of such price, and such Requesting Holder shall
then have the right to withdraw its request to have its Registrable Securities
included in such Registration Statement; provided further, that if, at any time
after giving written notice of its intention to register any securities and
prior to the effective date of the Registration Statement filed in connection
with such registration, the Company shall determine for any reason not to
register or to delay registration of such securities, the Company may, at its
election, give written notice of such determination to each Requesting Holder
of Registrable Securities and (i) in the case of a determination not to
register, shall be relieved of its obligation to register any Registrable
Securities in connection with such registration (but not from any obligation of
the Company to pay the Registration Expenses in connection therewith), and (ii)
in the case of a determination to delay registering, shall be permitted to
delay registering any Registrable Securities, for the same period as the delay
in registering such other securities, provided, however, that such period shall
not exceed an aggregate of 90 days in any 12-month period. No

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registration effected under this Section 2.2 shall relieve the Company of its
obligation to effect any offering upon request under Section 2.1.

                  (b)      Priority in Piggyback Registrations. If the managing
underwriter of any underwritten offering shall inform the Company by letter of
its opinion that the number or type of Registrable Securities requested to be
included in such registration would materially adversely affect such offering,
and the Company has so advised the Requesting Holders in writing, then the
number of Registrable Securities included in such offering shall be reduced, to
the extent necessary to reduce the total amount of securities to be included in
such offering to the amount recommended by the managing underwriter, and any
securities to be excluded shall come (i) first, pro rata, on the basis of the
number of shares proposed to be registered, from the holders of Registrable
Securities and other participating selling shareholders who are not holders of
Registrable Securities, if any, who have a contractual right under a written
agreement with the Company to offer shares on a "piggyback" basis in such
offering, and (ii) after all such securities are excluded, from the shares to
be offered by the Company and any shareholder or shareholders on whose behalf
the secondary registration was initiated so long as such registration was
initiated pursuant to a "demand" registration right of such shareholder or
shareholders, in accordance with the agreement of such parties.

                  (c)      Expenses. The Company will pay all Registration
Expenses in connection with any registration effected pursuant to this
Section 2.2.

         2.3      Registration Procedures . If and whenever the Company is
required to effect the offering or registration of any Registrable Securities
under the Securities Act as provided in Sections 2.1 and 2.2, the Company will,
as expeditiously as possible:

                           (i)      prepare and (within 90 days of the request
or in any event as soon thereafter as practicable) file with the Commission the
requisite Registration Statement or Prospectus or supplement to effect such
registration or offering and thereafter use its reasonable best efforts to
cause such Registration Statement to become effective; provided, however, that
the Company may discontinue any registration of its securities that are not
Registrable Securities (and, under the circumstances specified in Section
2.2(a), its securities that are Registrable Securities) at any time prior to
the effective date of the Registration Statement relating thereto; provided,
however, that before filing a Registration Statement or Prospectus or any
amendments or supplements thereto, other than deemed amendments resulting from
filing documents that are incorporated by reference, the Company will furnish
to one counsel for the holders of the Registrable Securities covered by such
Registration Statement copies of all such documents proposed to be filed, and
will provide such counsel a reasonable period of time to review and comment on
such documents. The Company will not file any such Registration Statement or
amendment thereto or any Prospectus or any supplement thereto

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to which the holders of a majority of the Registrable Securities covered by
such Registration Statement shall reasonably object on a timely basis;

                           (ii)     prepare and file with the Commission such
amendments and supplements to such Registration Statement and the Prospectus
used in connection therewith as may be necessary to keep such Registration
Statement effective and to comply with the provisions of the Securities Act
with respect to the disposition of all Registrable Securities covered by such
Registration Statement until the earlier of (a) such time as all of such
Registrable Securities have been disposed of in accordance with the intended
methods of disposition by the seller or sellers thereof set forth in such
Registration Statement; or (b) such time as all of the Registrable Securities
cease to be Registrable Securities;

                           (iii)    furnish to each seller of Registrable
Securities covered by such Registration Statement, such number of conformed
copies of such Registration Statement and of each such amendment and supplement
thereto (in each case including all exhibits), such number of copies of the
Prospectus contained in such Registration Statement (including each preliminary
Prospectus and any summary prospectus) and any other prospectus filed under
Rule 424 under the Securities Act, in conformity with the requirements of the
Securities Act, and such other documents, as such seller may reasonably
request;

                           (iv)     use its reasonable best efforts (x) to
register or qualify all Registrable Securities and other securities covered by
such Registration Statement under such other securities or blue sky laws of
such States of the United States of America where an exemption is not available
and as the sellers of a majority of the Registrable Securities covered by such
Registration Statement shall reasonably request, (y) to keep such registration
or qualification in effect for so long as such Registration Statement remains
in effect and (z) to take any other action that may be reasonably necessary or
advisable to enable such sellers to consummate the disposition in such
jurisdictions of the securities to be sold by such sellers, except that the
Company shall not for any such purpose be required to qualify generally to do
business as a foreign corporation in any jurisdiction wherein it would not but
for the requirements of this subdivision (iv) be obligated to be so qualified
or to consent to general service of process in any such jurisdiction;

                           (v)      use its reasonable best efforts to cause
all Registrable Securities covered by such Registration Statement to be
registered with or approved by such other federal or state governmental
agencies or authorities as may be necessary in the opinion of counsel to the
Company and counsel to the seller or sellers of Registrable Securities to
enable the seller or sellers thereof to consummate the disposition of such
Registrable Securities;

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                           (vi)     in the case of an Underwritten Offering,
furnish at the appropriate time to each seller of Registrable Securities, and
each such seller's underwriters, if any, a signed counterpart of:

                           (x)      an opinion of counsel for the Company,
dated the effective date of such Registration Statement and, if applicable, the
date of the closing under the underwriting agreement, and

                           (y)      a "comfort" letter signed by the
independent public accountants who have certified the Company's financial
statements included or incorporated by reference in such Registration
Statement,

covering substantially the same matters with respect to such Registration
Statement (and the Prospectus) and, in the case of the accountants' comfort
letter, with respect to events subsequent to the date of such financial
statements, as are customarily covered in opinions of issuer's counsel and in
accountants' comfort letters delivered to the underwriters in underwritten
public offerings of securities and, in the case of the accountants' comfort
letter, such other financial matters, and, in the case of the legal opinion,
such other legal matters, as the underwriters may reasonably request;

                           (vii)    in the case of an Underwritten Offering of
any Registrable Securities subject to Section 2.1, cause representatives of the
Company to participate in any "road show" or "road shows" reasonably requested
by the underwriter;

                           (viii)   notify each seller of Registrable
Securities covered by such Registration Statement at any time when a Prospectus
relating thereto is required to be delivered under the Securities Act, upon
discovery that, or upon the happening of any event (including those events
referred to in Section 2.6) as a result of which, the Prospectus, as then in
effect, includes an untrue statement of a material fact or omits to state any
material fact required to be stated therein or necessary to make the statements
therein not misleading, in the light of the circumstances under which they were
made, and at the request of any such seller, subject to the provisions of
Section 2.6, promptly prepare and furnish to it a reasonable number of copies
of a supplement to or an amendment of such prospectus as may be necessary so
that, as thereafter delivered to the Investors of such securities, such
Prospectus shall not include 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 in the light of the circumstances under which
they were made;

                           (ix)     otherwise use its reasonable best efforts
to comply with all applicable rules and regulations of the Commission, and, if
required, make available to its security holders, as soon as reasonably
practicable, an earnings statement covering the period of at least twelve
months, but not more than eighteen months,

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beginning with the first full calendar month after the effective date of such
Registration Statement, which earnings statement shall satisfy the provisions
of Section 11(a) of the Securities Act and Rule 158 promulgated thereunder, and
promptly furnish to each such seller of Registrable Securities a copy of any
amendment or supplement to such Registration Statement or Prospectus;

                           (x)      provide and cause to be maintained a
transfer agent and registrar (which, in each case, may be the Company) for all
Registrable Securities covered by such Registration Statement from and after a
date not later than the effective date of such registration; and

                           (xi)     use its reasonable best efforts to list all
Registrable Securities covered by such Registration Statement on the NASDAQ or
any national securities exchange on which Registrable Securities of the same
class covered by such Registration Statement are then listed and, if no such
Registrable Securities are so listed, on the NASDAQ or any national securities
exchange on which the Common Stock is then listed.

         The Company may require each seller of Registrable Securities as to
which any registration is being effected to promptly furnish the Company such
information regarding such seller and the distribution of such securities as
the Company may from time to time reasonably request in writing; provided, that
any such information or questionnaires shall be given or made by a seller of
Registrable Securities without representation or warranty of any kind
whatsoever except representations with respect to the identity of such seller,
such seller's Registrable Securities and such seller's intended method of
distribution or any other representations required by applicable law.

         Each holder of Registrable Securities agrees by acquisition of such
Registrable Securities that, upon receipt of any notice from the Company of the
happening of any event of the kind described in subdivision (viii) of this
Section 2.3, such holder will forthwith discontinue such holder's disposition
of Registrable Securities pursuant to the Registration Statement relating to
such Registrable Securities until such holder's receipt of the copies of the
supplemented or amended Prospectus contemplated by subdivision (viii) of this
Section 2.3 and Section 2.6 and, if so directed by the Company, will deliver to
the Company (at the Company's expense) all copies, other than permanent file
copies, then in such holder's possession of the Prospectus relating to such
Registrable Securities current at the time of receipt of such notice.

         2.4      Underwritten Offerings.

                  (a)      Requested Underwritten Offerings. If requested by
the underwriters for any Underwritten Offering by holders of Registrable
Securities pursuant to an offering under Section 2.1, the Company will use its
reasonable best efforts to enter

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into an underwriting agreement with such underwriters for such offering, such
agreement to be reasonably satisfactory in substance and form to the Company, a
majority of the holders of the Registrable Securities and the underwriters, and
to contain such representations and warranties by the Company and such other
terms as are generally prevailing in agreements of that type, including,
without limitation, indemnities to the effect and to the extent provided in
Section 2.7. The holders of the Registrable Securities proposed to be sold by
such underwriters will reasonably cooperate with the Company in the negotiation
of the underwriting agreement. Such holders of Registrable Securities to be
sold by such underwriters shall be parties to such underwriting agreement and
may, at their option, require that any or all of the representations and
warranties by, and the other agreements on the part of, the Company to and for
the benefit of such underwriters shall also be made to and for the benefit of
such holders of Registrable Securities and that any or all of the conditions
precedent to the obligations of such underwriters under such underwriting
agreement be conditions precedent to the obligations of such holders of
Registrable Securities. No holder of Registrable Securities shall be required
to make any representations or warranties to, or agreements with, the Company
other than representations, warranties or agreements regarding the identity of
such holder, such holder's Registrable Securities and such holder's intended
method of distribution or any other representations required by applicable law.

                  (b)      Piggyback Underwritten Offerings. If the Company
proposes to register any of its securities under the Securities Act as
contemplated by Section 2.2 and such securities are to be distributed by or
through one or more underwriters, the Company will, if requested by any
Requesting Holder of Registrable Securities, use its reasonable best efforts to
arrange for such underwriters to include all the Registrable Securities to be
offered and sold by such Requesting Holder among the securities of the Company
to be distributed by such underwriters, subject to the provisions of Section
2.2(b). The holders of Registrable Securities to be distributed by such
underwriters shall be parties to the underwriting agreement between the Company
and such underwriters and may, at their option, require that any or all of the
representations and warranties by, and the other agreements on the part of, the
Company to and for the benefit of such underwriters shall also be made to and
for the benefit of such holders of Registrable Securities and that any or all
of the conditions precedent to the obligations of such underwriters under such
underwriting agreement be conditions precedent to the obligations of such
holders of Registrable Securities. No holder of Registrable Securities shall be
required to make any representations or warranties to, or agreements with, the
Company or the underwriters other than representations, warranties or
agreements regarding the identity of such holder, such holder's Registrable
Securities and such holder's intended method of distribution or any other
representations required by applicable law.

                  (c)      Underwriting Discounts and Commission. The holders
of Registrable Securities sold in any offering pursuant to Section 2.4(a) or
Section 2.4(b)

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shall pay all underwriting discounts and commissions of the underwriter or
underwriters with respect to the Registrable Securities sold thereby.

         2.5      Preparation; Reasonable Investigation . In connection with
the preparation and filing of each Registration Statement under the Securities
Act pursuant to this Agreement, the Company will give the holders of
Registrable Securities registered under such Registration Statement, their
underwriters, if any, and their respective counsel the opportunity to
participate in the preparation of such Registration Statement, each prospectus
included therein or filed with the Commission, and each amendment thereof or
supplement thereto (other than deemed amendments resulting from filing
documents that are incorporated by reference), and will give each of them such
reasonable access to its books and records and such opportunities to discuss
the business of the Company with its officers and the independent public
accountants who have certified its financial statements as shall be necessary,
in the opinion of such holders' and such underwriters' respective counsel, to
conduct a reasonable investigation within the meaning of the Securities Act.

         2.6      Limitations, Conditions and Qualifications to Obligations
under Registration Covenants . Anything in this Agreement to the contrary
notwithstanding, it is understood and agreed that the Company may require any
holder of Registrable Securities to cease selling under, and shall be entitled
to delay seeking effectiveness of, and shall not be required to file a
Registration Statement, amendment or post-effective amendment thereto or
Prospectus supplement or to supplement or amend any Registration Statement if
the Company is then involved in discussions concerning, or otherwise engaged
in, an acquisition, disposition, financing or any other material transaction if
the Company determines in good faith that the making of such a filing,
supplement or amendment at such time would materially adversely effect or
interfere with such transaction; provided, however, that the Company shall not
postpone pursuant to this Section 2.6 the ability of holders selling
Registrable Securities to sell or the making of all such filings, supplements
or amendments with respect to all registrations proposed pursuant to this
Agreement for more than an aggregate of 90 days in any 12-month period. The
Company shall promptly give the holders of Registrable Securities written
notice of such postponement, which shall contain no information relating to the
reasons for such postponement but will contain an approximation of the
anticipated delay. Upon receipt by a holder of notice of an event of the kind
described in this Section 2.6, such holder shall forthwith discontinue such
holder's disposition of Registrable Securities until such holder's receipt of
notice from the Company that such disposition may continue and of any
supplemented or amended prospectus indicated in such notice.

         2.7      Indemnification .

                  (a)      Indemnification by the Company. The Company will,
and hereby does, indemnify and hold harmless, in the case of any Registration
Statement filed

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pursuant to Section 2.1 or 2.2, each seller of any Registrable Securities
covered by such Registration Statement and each other Person, if any, who
controls such seller (including in the case of the Fund, Brown Brothers
Harriman & Co.) within the meaning of the Securities Act, and their respective
directors, officers, partners, members, agents and affiliates against any
losses, claims, damages or liabilities, joint or several, to which such seller
or any such director, officer, partner, member, agent, affiliate or controlling
person may become subject under the Securities Act or otherwise, including,
without limitation, the reasonable fees and expenses of legal counsel
(including those incurred in connection with any claim for indemnity
hereunder), insofar as such losses, claims, damages or liabilities (or actions
or proceedings, whether commenced or threatened, in respect thereof) arise out
of or are based upon any untrue statement or alleged untrue statement of any
material fact contained in any Registration Statement under which such
securities were registered under the Securities Act, any preliminary
prospectus, final prospectus or summary prospectus contained therein, or any
amendment or supplement thereto, or any omission or alleged omission to state
therein a material fact required to be stated therein or necessary to make the
statements therein in light of the circumstances in which they were made not
misleading, and the Company will reimburse such seller and each such director,
officer, partner, member, agent, affiliate and controlling Person for any legal
or any other expenses reasonably incurred by them in connection with
investigating or defending any such loss, claim, liability, action or
proceeding; provided, however, that the Company shall not be liable in any such
case to the extent that any such loss, claim, damage, liability (or action or
proceeding in respect thereof) or expense arises out of or is based upon an
untrue statement or alleged untrue statement or omission or alleged omission
made in such Registration Statement, any such preliminary prospectus, final
prospectus, summary prospectus, amendment or supplement in reliance upon and in
conformity with written information furnished to the Company by or on behalf of
such seller, specifically stating that it is for use in the preparation
thereof. Such indemnity shall remain in full force and effect regardless of any
investigation made by or on behalf of such seller or any such director,
officer, partner, member, agent or controlling person and shall survive the
transfer of such securities by such seller.

                  (b)      Indemnification by the Sellers. As a condition to
including any Registrable Securities in any Registration Statement or any
Underwritten Offering pursuant to Section 2.1, the Company shall have received
an undertaking satisfactory to it from the prospective seller of such
Registrable Securities, to indemnify and hold harmless (in the same manner and
to the same extent as set forth in Section 2.7(a)) the Company and its
respective directors, officers, partners, members, agents and affiliates and
each other Person, if any, who participates as an underwriter in the offering
or sale of such securities and each other Person who controls the Company or
any such underwriter within the meaning of the Securities Act with respect to
any statement or alleged statement in or omission or alleged omission from such
Registration Statement, any preliminary prospectus, final prospectus or summary
prospectus contained therein, or any amendment or supplement thereto, if such
statement or alleged statement or omission or

                                      12
<PAGE>   13

alleged omission was made in reliance upon and in conformity with written
information furnished to the Company by such seller specifically stating that
it is for use in the preparation of such Registration Statement, preliminary
prospectus, final prospectus, summary prospectus, amendment or supplement;
provided, however, that the liability of such indemnifying party under this
Section 2.7(b) shall be limited to the amount of the net proceeds received by
such indemnifying party in the offering giving rise to such liability. Such
indemnity shall remain in full force and effect, regardless of any
investigation made by or on behalf of the Company or any such director, officer
or controlling person and shall survive the transfer of such securities by such
seller.

                  (c)      Notices of Claims, etc. Promptly after receipt by an
indemnified party of notice of the commencement of any action or proceeding
involving a claim referred to in Section 2.7(a) or (b), such indemnified party
will, if a claim in respect thereof is to be made against an indemnifying
party, give written notice to the latter of the commencement of such action;
provided, however, that the failure of any indemnified party to give notice as
provided herein shall not relieve the indemnifying party of its obligations
under the preceding subsections of this Section 2.7, except to the extent that
the indemnifying party is actually prejudiced by such failure to give notice.
In case any such action shall be brought against any indemnified party and it
shall notify the indemnifying party of the commencement thereof, the
indemnifying party shall be entitled to participate therein and, to the extent
that it may wish, to assume the defense thereof, with counsel reasonably
satisfactory to such indemnified party; provided, however, that any indemnified
party may, at its own expense, retain separate counsel to participate in such
defense. Notwithstanding the foregoing, in any action or proceeding in which
both an indemnifying party and an indemnified party is, or is reasonably likely
to become, a party, such indemnified party shall have the right to employ
separate counsel at an indemnifying party's expense and to control its own
defense of such action or proceeding if, in the reasonable opinion of counsel
to such indemnified party, (a) there are or may be legal defenses available to
such indemnified party or to other indemnified parties that are different from
or additional to those available to an indemnifying party or (b) any conflict
or potential conflict exists between an indemnifying party and such indemnified
party that would make such separate representation advisable; provided,
however, that in no event shall an indemnifying party be required to pay fees
and expenses under this Section 2.7 for more than one firm of attorneys in any
jurisdiction in any one legal action or group of related legal actions. No
indemnifying party shall be liable for any settlement of any action or
proceeding effected without its written consent, which consent shall not be
unreasonably withheld. No indemnifying party shall, without the consent of the
indemnified party, consent to entry of any judgment or enter into any
settlement that does not include as an unconditional term thereof the giving by
the claimant or plaintiff to such indemnified party of a release from all
liability in respect to such claim or litigation or which requires action other
than the payment of money by the indemnifying party.

                                      13
<PAGE>   14

                  (d)      Contribution. If the indemnification provided for in
this Section 2.7 shall for any reason be held by a court to be unavailable to
an indemnified party under Section 2.7(a) or (b) hereof in respect of any loss,
claim, damage or liability, or any action in respect thereof, then, in lieu of
the amount paid or payable under Section 2.7(a) or (b), the indemnified party
and the indemnifying party under Section 2.7(a) or (b) shall contribute to the
aggregate losses, claims, damages and liabilities (including legal or other
expenses reasonably incurred in connection with investigating the same,
including those incurred in connection with any claim for indemnity hereunder),
(i) in such proportion as is appropriate to reflect the relative fault of the
Company and the prospective sellers of Registrable Securities covered by the
Registration Statement which resulted in such loss, claim, damage or liability,
or action or proceeding in respect thereof, with respect to the statements or
omissions which resulted in such loss, claim, damage or liability, or action or
proceeding in respect thereof, as well as any other relevant equitable
considerations or (ii) if the allocation provided by clause (i) above is not
permitted by applicable law, in such proportion as shall be appropriate to
reflect the relative benefits received by the Company and such prospective
sellers from the offering of the securities covered by such Registration
Statement; provided, however, that for purposes of this clause (ii), the
relative benefits received by the prospective sellers shall be deemed not to
exceed the amount of proceeds received by such prospective sellers. 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. Such prospective sellers'
obligations to contribute as provided in this Section 2.7(d) are several in
proportion to the relative value of their respective Registrable Securities
covered by such Registration Statement and not joint. In addition, no Person
shall be obligated to contribute hereunder any amounts in payment for any
settlement of any action or claim effected without such Person's consent, which
consent shall not be unreasonably withheld.

                  (e)      Other Indemnification. Indemnification and
contribution similar to that specified in the preceding subdivisions of this
Section 2.7 (with appropriate modifications) shall be given by the Company and
each seller of Registrable Securities with respect to any required registration
or other qualification of securities under any federal or state law or
regulation of any governmental authority other than the Securities Act.

                  (f)      Indemnification Payments. The indemnification and
contribution required by this Section 2.7 shall be made by periodic payments of
the amount thereof during the course of the investigation or defense, as and
when bills are received or expense, loss, damage or liability is incurred.

                                      14
<PAGE>   15

                                      III
                                 MISCELLANEOUS

         3.1      Rule 144. The Company shall take all actions reasonably
necessary to enable holders of Registrable Securities to sell such securities
without registration under the Securities Act within the limitation of the
provisions of (a) Rule 144 under the Securities Act, as such Rule may be
amended from time to time, or (b) any similar rules or regulations hereafter
adopted by the Commission. Upon the request of any holder of Registrable
Securities, the Company will deliver to such holder a written statement as to
whether it has complied with such requirements.

         3.2      No Inconsistent Agreements. The Company will not, without the
written consent of the holders of 50% of the Registrable Securities on or after
the date hereof, enter into any agreement with respect to its securities which
is inconsistent with the rights granted to the holders of Registrable
Securities in this Agreement or otherwise conflicts with the provisions hereof.
Without limiting the generality of the foregoing, the Company will not
hereafter without the written consent of the holders of 50% of the Registrable
Securities enter into any agreement with respect to its securities that grants,
or modifies any existing agreement with respect to its securities to grant, to
the holder of its securities in connection with any registration of such
securities higher priority to the rights granted to the Investors under Section
2.2(b).

         3.3      Amendments and Waivers; Several Obligations.

                  (a)      The provisions of this Agreement, including the
provisions of this sentence, may not be amended, modified or supplemented, and
waivers or consents to departures from the provisions hereof may not be given,
unless the Company has obtained the written consent of the Fund and the holders
of 50% of the then-outstanding Registrable Securities (other than the Fund).
Notwithstanding the foregoing, a waiver of or consent to depart from the
provisions hereof with respect to a matter that relates exclusively to the
rights of holders of Registrable Securities whose securities are being sold
pursuant to a Registration Statement and that does not directly or indirectly
affect the rights of other holders of Registrable Securities may be given by
holders of a majority of the Registrable Securities being sold by such holders
(but shall in all cases include the Fund if it is selling securities in that
offering); provided, however, that the provisions of this sentence may not be
amended, modified, or supplemented except in accordance with the provisions of
the immediately preceding sentence.

                  (b)      The execution of this Agreement by the Company and
any Investor shall bind the Investor and the Company, regardless of whether or
how many other Investors have executed this Agreement. The execution of this
Agreement by additional Investors from time to time until all of the Investors
have executed this Agreement shall not be deemed an amendment to which Section
3.3(a) applies.

         3.4      Owner of Registrable Securities. The Company will maintain,
or will cause its registrar and transfer agent to maintain, a stock book with
respect to the

                                      15
<PAGE>   16

Common Stock, in which all transfers of Registrable Securities of which the
Company has received notice will be recorded. The Company may deem and treat
the Person in whose name Registrable Securities are registered in the stock
book of the Company as the owner thereof for all purposes, including without
limitation the giving of notices under this Agreement.

         3.5      Fees. In any action or proceeding brought to enforce any
provision of this Agreement, or where any provision hereof is validly asserted
as a defense, the prevailing party, as determined by the court, will be
entitled to recover reasonable attorneys' fees in addition to any other
available remedy.

         3.6      Assignment. Each holder of the Registrable Securities may
assign all or any part of its rights under this Agreement; but only to any
Person to whom such holder sells, transfers, assigns or pledges such
Registrable Securities; provided that, except as to transfers to Affiliates and
to the partners of a holder that is a limited partnership, the transferee shall
receive the benefit of the assignment of rights under this Agreement only if
the transferee receives at least 100,000 (as adjusted for stock splits,
combinations and the like) shares of Registrable Securities (or the equivalent
thereof, if Series E Preferred or Warrants are transferred). In the event that
such holder shall assign its rights pursuant to this Agreement in connection
with the transfer of less than all its Registrable Securities, the holder shall
also retain its rights with respect to its remaining Registrable Securities.

         3.7      Remedies. In the event of a breach by the Company of its
obligations under this Agreement, each holder of Registrable Securities, in
addition to being entitled to exercise all rights granted by law, including
recovery of damages, will be entitled to specific performance of its rights
under this Agreement. The Company agrees that monetary damages would not be
adequate compensation for any loss incurred by reason of a breach by it of any
of the provisions of this Agreement and hereby further agrees that, in the
event of any action for specific performance in respect of such breach, it will
waive the defense that a remedy at law would be adequate.

         3.8      Notices. All notices and other communications provided for or
permitted hereunder shall be made in writing and will be deemed given (i) when
made, if made by hand delivery, (ii) upon confirmation, if made by fax, or
(iii) one business day after being deposited with a reputable next-day courier,
postage prepaid if to the Company, at the address set forth on the signature
page hereto, and if to any holder of Registrable Securities, at the most
current address given by such holder to the Company in accordance with the
provisions of this Section 3.8.

         3.9      Counterparts. This Agreement may be executed in any number of
counterparts and by the parties hereto in separate counterparts, each of which
when so

                                      16
<PAGE>   17

executed will be deemed to be an original and all of which taken together will
constitute one and the same instrument.

         3.10     Headings. The headings in this Agreement are for convenience
of reference only and will not limit or otherwise affect the meaning hereof.

         3.11     Governing Law. This Agreement will be governed by and
construed in accordance with the laws of the State of New York, without regard
to the conflict of laws principles of such state.

         3.12     Severability. If any term, provision, covenant or restriction
of this Agreement is held by a court of competent jurisdiction to be invalid,
void or unenforceable, the remainder of the terms, provisions, covenants and
restrictions set forth herein will remain in full force and effect and will in
no way be affected, impaired or invalidated, and the parties hereto will use
their best 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 the remaining
terms, provisions, covenants and restrictions without including any of such
which may be hereafter declared invalid, void or unenforceable.

         3.13     Certain Distributions. The Company shall not at any time make
a distribution on or with respect to the Common Stock (including any such
distribution made in connection with a consolidation or merger in which the
Company is the resulting or surviving corporation and such Registrable
Securities are not changed or exchanged) of securities of another issuer if
holders of Registrable Securities are entitled to receive such securities in
such distribution as holders of Registrable Securities and any of the
securities so distributed are registered under the Securities Act, unless the
securities to be distributed to the holders of Registrable Securities are also
registered under the Securities Act.

                                      17
<PAGE>   18

         IN WITNESS WHEREOF, the undersigned have executed this Registration
Rights Agreement as of the day and year first written above.

                                             Z-TEL TECHNOLOGIES, INC

                                             By: /s/ D. Gregory Smith
                                                 ------------------------------
                                             Name: D. Gregory Smith
                                                   ----------------------------
                                             Title: President and CEO
                                                    ----------------------------

                                             THE 1818 FUND III, L.P.

                                             By: /s/ Lawrence C. Tucker
                                                 ------------------------------
                                             Name: Lawrence C. Tucker
                                                   ----------------------------
                                             Title: Partner
                                                    ---------------------------<PAGE>   1

                                                                    Exhibit 4.10

THE SHARES ISSUABLE UPON EXERCISE OF THIS WARRANT HAVE NOT BEEN REGISTERED UNDER
THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR QUALIFIED
UNDER ANY STATE SECURITIES LAW. THE SHARES ISSUABLE UPON EXERCISE OF THIS
WARRANT MAY NOT BE SOLD, OFFERED FOR SALE, TRANSFERRED, PLEDGED OR HYPOTHECATED
IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT WITH RESPECT THERETO
UNLESS SOLD, OFFERED FOR SALE, TRANSFERRED, PLEDGED OR HYPOTHECATED IN A
TRANSACTION THAT IS EXEMPT FROM REGISTRATION UNDER THE SECURITIES ACT.

                                     WARRANT

                           FOR THE PURCHASE OF SHARES
                                 OF COMMON STOCK

                                       OF

                            Z-TEL TECHNOLOGIES, INC.

THIS CERTIFIES THAT, for value received, The 1818 Fund III, L.P., a Delaware
limited partnership, or its successor or assignee (the "Holder"), is entitled to
subscribe for and purchase from Z-TEL TECHNOLOGIES, INC., a Delaware corporation
(the "Company"), 2,083,333 fully paid and nonassessable shares of Common Stock,
$0.01 par value per share, of the Company at the purchase price of $13.80 per
share (the "Exercise Price"), subject to adjustment as provided in Sections 4
and 6 of this Warrant on or before the Expiration Date (as hereinafter defined).
This Warrant is issued pursuant to that certain Stock Purchase Agreement, dated
October 19, 2000, by and among the Company, the Holder and the other investors
named on Schedule 1 thereto (the "Stock Purchase Agreement").

         I. DEFINITIONS. When used in this Warrant, the following terms shall
have the meanings specified:

         A. "AFFILIATE" shall mean any affiliate, as that term is defined under
Rule 144 promulgated under the Securities Act.

         B. "COMMON STOCK" shall mean the common stock, $0.01 par value per
share, of the Company.

<PAGE>   2

         C. "CONVERTIBLE SECURITIES" means evidences of indebtedness, shares of
stock or other securities which are convertible into or exchangeable for, with
or without payment of additional consideration in cash or property, additional
shares of Common Stock, either immediately or upon the arrival of a specified
date or the happening of a specified event.

         D. "CURRENT MARKET PRICE" as of a particular day means the closing
price on such day of the Common Stock on The Nasdaq Stock Market (or on the
exchange or quotation system on which the Corporation's Common Stock is then
traded) as reported in THE WALL STREET JOURNAL.

         E. "DERIVATIVE EQUIVALENT SHARES" shall mean that number of shares
derived by dividing the aggregate consideration received by the Corporation for
the issuance of Derivative Securities, as determined in accordance with Section
1.6, by the Current Market Price immediately prior to such issuance.

         F. "DERIVATIVE SECURITIES" shall mean securities, other than Options
and Convertible Securities, issued for cash by the Corporation or an Affiliate
of the Corporation, the value of which is directly based upon or derived by
reference to the market value of the Common Stock. The consideration received by
the Corporation for additional shares of Common Stock deemed to be issued in
connection with the issuance of Derivative Securities shall be determined by a
recognized financial institution agreeable to the Corporation and holders of
warrants exercisable for at least two-thirds of the total number of shares of
the Common Stock issuable upon exercise of all warrants issued pursuant to the
Stock Purchase Agreement.

         G. "EXERCISE NOTICE" shall mean a notice of exercise of all or any
portion of this Warrant, in the form attached hereto as Exhibit A.

         H. "FAIR MARKET VALUE" of one share of Common Stock shall be equal to
the average for the five trading days prior to the date of such exercise of (i)
the last reported sale price of the Common Stock quoted on the Nasdaq National
Market System or the principal exchange on which the Common Stock is then
listed, whichever is applicable, or (ii) the average of the closing bid and
asked prices of the Common Stock quoted in the Over-The-Counter Market Summary,
in each case as published in THE WALL STREET JOURNAL. If no public market exists
for the Common Stock at the time of such exercise, the "fair market value" shall
be determined by the Company's Board of Directors in good faith, which shall be
deemed to be fair market value unless holders of at least 15% of the Common
Stock issuable upon exercise of the Warrants issued pursuant to the Stock
Purchase Ageement request that the Company obtain an opinion of a nationally
recognized investment banking firm chosen by such holders and the Company (at
the Company's expense), in which event fair market value shall be determined by
such investment banking firm.

                                       2
<PAGE>   3

         I. "OPTIONS" shall mean rights, options or warrants to subscribe for,
purchase or otherwise acquire either Common Stock or Convertible Securities.

         J. "EXPIRATION DATE" shall mean the earlier to occur of the following:
(i) the exercise of all of the rights represented by this Warrant; or (ii) five
years from the Initial Closing (as defined in the Stock Purchase Agreement).

         K. "PERSON" shall mean and include an individual, partnership,
corporation, trust, joint venture, limited liability company, incorporated
organization and a government or any department or agency thereof.

         L. "REGISTRATION RIGHTS AGREEMENT" shall mean the Registration Rights
Agreement of even date herewith by and between the Company, the Holder and each
of the other signatories thereto.

         M. "SECURITIES ACT" means the Securities Act of 1933, as amended.

         N. "TRANSFER" means any act pursuant to which, directly or indirectly,
the ownership or the economic benefits of assets or securities in question is
sold, exchanged, assigned, transferred, conveyed, delivered or otherwise
disposed of, and shall include the issuance of any instrument the value of which
is based upon the value of such assets or securities.

         O. "WARRANT SHARES" shall mean the shares of Common Stock issuable to
the Holder of this Warrant upon any exercise of this Warrant.

                                       3
<PAGE>   4

         II. WARRANT EXERCISE; ISSUANCE OF CERTIFICATES; PAYMENT FOR WARRANT
SHARES.

         A. This Warrant may be exercised by the Holder, in whole or in part, at
any time prior to the Expiration Date by delivery of an Exercise Notice and,
within five business days thereafter, surrender of this Warrant (properly
endorsed if required) and payment by the Holder of the Exercise Price as
provided in Section 2.2. Upon such surrender and payment, the Holder shall be
entitled to receive a certificate or certificates representing the Warrant
Shares so purchased. The Company agrees that the Warrant Shares so purchased
shall be deemed to be issued to the Holder as the record owner of such Warrant
Shares as of the close of business on the date on which this Warrant shall have
been surrendered and payment made for such shares as aforesaid. Certificates for
the Warrant Shares so purchased shall be delivered to the Holder within a
reasonable time, not exceeding five (5) business days, after the rights
represented by this Warrant shall have been so exercised. If the rights of the
Holder of this Warrant are exercised in part, the number of Warrant Shares
subject to this Warrant shall be reduced accordingly and the Company shall
reissue a Warrant or Warrants of like tenor representing in the aggregate the
right to purchase the number of Warrant Shares as so reduced.

         B. Payment of the Exercise Price shall be made by check payable to the
Company, wire transfer of immediately available funds to an account specified by
the Company upon inquiry by the Holder, or as further provided in this Section
2.2. Notwithstanding any provisions herein to the contrary, in lieu of
exercising this Warrant in exchange for cash, the Holder may elect to exercise
all or a portion of this Warrant by canceling all or a portion of this Warrant
and receiving in exchange therefor shares of Common Stock (as determined below)
equal to the value of this Warrant, or the portion thereof being canceled, by
surrender of this Warrant at the principal office of the Company together with a
duly executed form of subscription. If the Fair Market Value (as defined below)
of one share of Common Stock is greater than the Exercise Price (computed as of
the date of exercise of this Warrant), the Company shall issue to the holder a
number of shares of Common Stock computed using the following formula:

                             X =  Y(A-B)
                                  ------
                       A
                  Where      X =  the number of shares of Common Stock to be
                                  issued to the holder
                             Y =  the number of shares of Common Stock
                                  purchasable under the Warrant or, if only
                                  a portion of the Warrant is being exercised,
                                  under the portion of the Warrant being
                                  exercised (on the date of exercise)

                             A =  the Fair Market Value of one share of the
                                  Common Stock (on the date of exercise)
                             B =  the Exercise Price (as adjusted to the
                                  date of exercise)

                                       4
<PAGE>   5

         III. AFFIRMATIVE COVENANTS. The Company covenants and agrees that the
Warrant Shares will, upon exercise of this Warrant and issuance in accordance
herewith, be duly authorized, validly issued, fully paid and nonassessable. The
Company further covenants and agrees that until the Expiration Date, the Company
will at all times have authorized, and reserved for the purpose of issue upon
total or partial exercise of the rights represented by this Warrant, a
sufficient number of shares of its Common Stock to provide for the exercise of
the rights represented by this Warrant. The Company shall pay, or cause to be
paid, all documentary and similar taxes levied under the laws of any applicable
jurisdiction in connection with the issuance of this Warrant, any modification
of this Warrant or the exercise of this Warrant.

         IV. ADJUSTMENTS. If the Company shall, while this Warrant remains
outstanding (i) pay a stock dividend or make a distribution to holders of Common
Stock in shares of its Common Stock, (ii) subdivide its outstanding shares of
Common Stock, (iii) combine its outstanding shares of Common Stock into a
smaller number of shares or (iv) issue by reclassification of its shares of
Common Stock any shares of capital stock of the Company, then thereafter the
number of Warrant Shares shall be automatically (and without notice or further
action) increased or decreased, as the case may be, in direct proportion to the
increase or decrease in the number of shares of Common Stock by reason of such
change, and the per share Exercise Price of this Warrant after such change shall
in case of an increase in the number of shares be proportionately decreased, and
in case of a decrease in the number of shares be proportionately increased, so
that the aggregate Exercise Price of this Warrant shall be unchanged by such
change. An adjustment made pursuant to this Section 4 shall become effective
retroactively (x) in the case of any such dividend or distribution, to a date
immediately following the close of business on the record date for the
determination of holders of shares of Common Stock entitled to receive such
dividend or distribution, or (y) in the case of any such subdivision,
combination or reclassification, to the close of business on the date upon which
such corporate action becomes effective.

                                       5
<PAGE>   6

         V. REORGANIZATION, RECLASSIFICATION, SHARE EXCHANGE OR MERGER.

         A. If at any time prior to the Expiration Date the Company is a party
to any agreement providing for (i) any capital reorganization or
reclassification of the capital stock of the Company or (ii) any share exchange
or merger of the Company with another corporation, in such a way that holders of
Common Stock shall be entitled to receive cash, shares of stock or securities or
assets (collectively, and regardless of whether received in connection with a
merger or some other form of corporate reorganization, the "MERGER
CONSIDERATION") with respect to or in exchange for Common Stock, then, as a
condition to such reorganization, reclassification, share exchange or merger,
the Holder shall be given the opportunity to elect to receive such cash, shares
of stock or securities or assets as may be issued or payable with respect to or
in exchange for the number of Warrant Shares then issuable upon the exercise of
the rights represented by this Warrant upon payment of the aggregate Exercise
Price for all of the Warrant Shares.

         B. If the Holder elects to receive the Merger Consideration, then upon
Holder's actual receipt of the Merger Consideration the Holder shall pay to the
Company (i) the per share Exercise Price of this Warrant multiplied by (ii) the
number of shares of Common Stock then issuable upon the exercise of the rights
represented by this Warrant, and thereafter the parties shall have no further
rights or obligations hereunder.

         C. If the Holder does not elect to receive the Merger Consideration,
the rights and obligations of the Holder and the Company (including any
successor company) under this Warrant shall remain in full force and effect
pursuant to the terms and conditions of this Warrant. In any such case, the
Company shall not effect any such reclassification, reorganization, share
exchange or merger, unless prior to the consummation thereof the successor
corporation (if other than the Company) resulting from such share exchange or
merger shall assume by written instrument the obligation to deliver to the
Holder, upon exercise of this Warrant, such cash, shares of stock or securities
or assets as the Holder would have been entitled to receive had the Holder made
the election in accordance with the provisions of this Section 5.

         D. In connection with any capital reorganization or reclassification of
the capital stock of the Company or any share exchange or merger of the Company
with another corporation, if the Company shall fix a record date for the making
of a distribution to holders of Common Stock of (i) assets (other than cash
dividends or cash distributions payable out of consolidated net income or earned
surplus or dividends payable in Common Stock), (ii) evidences of indebtedness or
other securities of the Company, or of any corporation other than the Company
(except for the Common Stock of the Company) or (iii) subscription rights,
options or warrants to purchase any of the foregoing assets or securities,

                                       6
<PAGE>   7

whether or not such rights, options or warrants are immediately exercisable, to
the extent such rights, options or warrants have not expired, then the Company
shall make provisions for the Holder to receive, and the Holder shall be
entitled upon exercise of this Warrant, evidences of indebtedness, securities or
such other rights, options or warrants, as if the Holder had exercised this
Warrant on or before such record date.

         VI. DILUTING ISSUANCES.

         A. UPON ISSUANCE OF COMMON STOCK. Except as hereinafter provided in
this Section 6, if the Company shall issue or sell any shares of Common Stock,
including any treasury shares, or any Derivative Securities, for consideration
per share (determined, with respect to Derivative Securities, as set forth in
Section 1.6 hereof) less than the greater of (i) the Current Market Price for
the most recent trading day that is able to be determined as of the time of such
issuance (before deducting underwriting discounts and commissions) or (ii) the
then current Exercise Price, then a "Diluting Issuance" shall have occurred and
the Exercise Price and number of Warrant Shares shall be adjusted as provided in
Section 6.4.

         B. UPON GRANTING OF CERTAIN RIGHTS.

         (a) If the Company shall in any manner grant, issue or sell any rights
to subscribe for or to purchase, or any options for the purchase of, Common
Stock, Convertible Securities or Derivative Securities, whether or not such
rights or options or the right to convert or exchange any such Convertible
Securities are immediately exercisable, and the price per share for which shares
of Common Stock or Derivative Securities (determined, as to Derivative
Securities, in accordance with Section 1.6 hereof) are issuable upon the
exercise of such rights or options or upon conversion or exchange of such
Convertible Securities, before deducting underwriting discounts and commissions,
shall be less than the greater of (i) the Current Market Price for the most
recent trading day that is able to be determined as of the time of the granting
of such rights or options (before deducting underwriting discounts and
commissions) or (ii) the then current Exercise Price, then a Diluting Issuance
shall have occurred and the Exercise Price and number of Warrant Shares shall be
adjusted as provided in Section 6.4. For the purposes of such adjustment as
provided in Section 6.4 the maximum number of shares of Common Stock issuable
upon the exercise of such rights or options or upon conversion or exchange of
Convertible Securities shall be deemed to be outstanding and to have been issued
for such price per share, before deducting underwriting discounts and
commissions. No further adjustments of the Exercise Price or number of Warrant
Shares shall be made upon the actual issuance of Common Stock, Derivative
Securities or Convertible Securities upon the exercise of any such warrant,
right or option or the actual issuance of Common Stock upon the conversion or
exchange of any such Convertible Securities.

         (b) The price per share for which shares of Common Stock are issuable
upon the exercise of such rights or options or upon conversion or exchange of
such Convertible Securities, and the consideration deemed to be received by the
Company, shall be determined by dividing (i) the total amount, if any, received
or receivable by the Company as consideration for the granting, issuance or sale
of such rights or options or Convertible Securities, before deducting

                                       7
<PAGE>   8

underwriting discounts and commissions, plus the minimum aggregate amount of
additional consideration payable to the Company upon the exercise of such rights
or options, plus, in the case of such Convertible Securities, the minimum
aggregate amount of additional consideration, if any, payable upon the
conversion or exchange thereof, plus the net amount received or receivable upon
the issuance of such Convertible Securities, before deducting underwriting
discounts and commissions (in each case without double counting), by (ii) the
total maximum number of shares of Common Stock issuable upon the exercise of
such rights or options or upon the conversion or exchange of all such
Convertible Securities issuable upon the exercise of such rights or options. The
price per share for which Derivative Securities are issuable upon the exercise
of such rights or options or upon conversion or exchange of such Convertible
Securities, and the consideration deemed to be received by the Company, shall be
determined in accordance with Section 1.6.

         C. ISSUANCE OF CONVERTIBLE SECURITIES.

         (a) Except as provided in the last sentence of this Section 6.3(a), if
the Company shall in any manner grant, issue or sell any Convertible Securities,
whether or not the rights to convert or exchange thereunder are immediately
exercisable, and the price per share for which shares of Common Stock are
issuable upon such conversion or exchange shall be less than the greater of (i)
the Current Market Price for the most recent trading day that is able to be
determined as of the time of such issuance (before deducting underwriting
discounts and commissions) or (ii) the then current Exercise Price, then a
Diluting Issuance shall have occurred and the Exercise Price and number of
Warrant Shares shall be adjusted as provided in Section 6.4. For the purposes of
such adjustment as provided in Section 6.4, the maximum number of shares of
Common Stock issuable upon conversion or exchange of all such Convertible
Securities shall as of the date for adjustment be deemed to be outstanding and
to have been issued for such price per share, before deducting underwriting
discounts and commissions. No further adjustments of the Exercise Price and
number of Warrant Shares shall be made upon the conversion or exchange of the
Convertible Securities. If any such issue or sale of such Convertible Securities
is made upon exercise of any rights to subscribe for or to purchase or any
option to purchase any such Convertible Securities for which adjustments of the
Exercise Price and number of Warrant Shares was made pursuant to Section 6.2, no
further adjustment shall be made by reason of such issue or sale.

         (b) The price per share for which shares of Common Stock are issuable
upon such conversion or exchange, and the consideration deemed to be received by
the Company, shall be determined by dividing (i) the total amount received or
receivable by the Company as consideration for the issue or sale of such
Convertible Securities, plus the minimum aggregate amount of additional

                                       8
<PAGE>   9

consideration, if any, payable to the Company upon the conversion or exchange
thereof, in each case before deducting underwriting discounts and commissions,
by (ii) the total maximum number of shares of Common Stock issuable upon the
conversion or exchange of all such Convertible Securities.

         D. EFFECT ON WARRANT EXERCISE RIGHTS. Upon the occurrence of a Diluting
Issuance:

         (a) the Exercise Price shall be reduced to the Exercise Price equal to
the following fraction:

                                      (A+B)
                                      ----
                                        C

                  where:
                  A = the number of shares of Common Stock outstanding
                  immediately prior to such grant, issue or sale multiplied by
                  the greater of (i) the Exercise Price or (ii) the Current
                  Market Price, in each case immediately prior to such grant,
                  issue or sale,

                  B = the aggregate consideration, if any, received or deemed to
                  be received by the Company upon such grant, issue or sale
                  (determined, with respect to issuances of Derivative
                  Securities, as set forth in Section 1.6 hereof), and

                  C = the total number of shares of Common Stock outstanding
                  immediately after such grant, issue or sale;

         (b) any Common Stock issuable upon the exercise of any warrants, rights
or options or the conversion or the exchange of any Convertible Securities, and
any Derivative Equivalent Shares shall be deemed to be outstanding for purposes
of this Section 6.4; and

         (c) the Holder shall thereafter be entitled to purchase hereunder as a
part of the Warrant Shares, at the Exercise Price in effect immediately after
such issue or sale, the positive number of shares of Common Stock which, when
multiplied by the Exercise Price in effect immediately after such issue or sale
(as determined under Section 6.4), will equal the product of (i) the Exercise
Price in effect immediately prior to such issue or sale and (ii) the number of
shares of Common Stock issuable pursuant to this Warrant immediately prior to
such issue or sale.

         E. OTHER DISTRIBUTIONS. If the Company distributes to any holder of
shares of its Common Stock (including any distribution made in connection with a
consolidation or merger in which the Company is the resulting or surviving
corporation and the Common Stock is not changed or exchanged) cash, evidences of
indebtedness of the Company or another issuer, securities of the Company or
another issuer or other assets or rights or warrants to subscribe for or
purchase securities of the Company (excluding those in respect of which
adjustments in the Exercise Price is made pursuant to Section 6.1, 6.2 or 6.3,
then, and in each such case, the Exercise Price then in effect shall be adjusted
by multiplying the Exercise Price in effect immediately prior to the date of

                                       9
<PAGE>   10

such distribution by a fraction (x) the numerator of which shall be the Current
Market Price per share of Common Stock on the record date referred to below and
(y) the denominator of which shall be such Current Market Price per share of
Common Stock less the then Fair Market Value of the portion of the cash,
evidences of indebtedness, securities or other assets so distributed or of such
subscription rights or warrants applicable to one share of Common Stock (but
such denominator shall in no event be zero). Such adjustment shall be made
whenever any such distribution is made and shall become effective retroactively
to a date immediately following the close of business on the record date for the
determination of stockholders entitled to receive such distribution.

         F. ADJUSTMENT. An adjustment pursuant to Section 6.4 shall be made
whenever such shares, securities, options, warrants or other rights are issued,
and shall become effective retroactively to a date immediately following the
close of business (x) in the case of an issuance to the stockholders of the
Company, as such on the record date for the determination of stockholders
entitled to receive such shares, securities, options, warrants or other rights
and (y) in all other cases, on the date of such issuance.

         G. LIMITATIONS ON DILUTING ISSUANCE ADJUSTMENTS. Notwithstanding the
foregoing provisions of this Section 6, no adjustment of the Exercise Price or
the number of Warrant Shares shall be made as a result of or in connection with
the subdivision of outstanding shares of Common Stock or combination of
outstanding shares of Common Stock as to which adjustments to the Exercise Price
or the number of Warrant Shares have been made pursuant to Section 4, it being
the parties' intent that this Section 6 shall not be deemed to require
additional adjustments to those already provided by Section 4.

         H. EFFECT OF CANCELLATIONS OF DILUTIVE SECURITIES. Any adjustments of
the Exercise Price or the Warrant Shares made pursuant to Sections 6.2 or 6.3
shall be disregarded if, as, when and to the extent that the rights, options or
Convertible Securities giving rise to such adjustments expire or are canceled
without being exercised, converted or exchanged. In such event, the Exercise
Price and number of Warrant Shares effective immediately upon such cancellation
or expiration shall be equal to the Exercise Price and number of Warrant Shares
in effect at the time of the issuance or sale of the rights, options or
Convertible Securities which expire or are canceled without being exercised,
converted or exchanged, with such additional adjustments as would have otherwise
been made pursuant to Section 4.

         I. OUTSTANDING SECURITIES. Notwithstanding anything else to the
contrary contained in this Warrant, no Dilutive Issuance will have occurred and
no adjustment of the per share Exercise Price or the number of Warrant Shares
shall be made as a result of or in connection with the issuance of Common Stock
pursuant to the conversion of Convertible Securities outstanding as of the date

                                       10
<PAGE>   11

of this Warrant or pursuant to the exercise of options, warrants or other
similar securities outstanding as of the date of this Warrant.

         VII. NOTIFICATION TO HOLDER.

         (a) Upon each adjustment pursuant to Section 6, the Company shall give
written notice thereof to the Holder within ten days after the date of such
adjustment, which notice shall set forth the calculation of the number of shares
of Common Stock issuable upon exercise of the rights represented by this Warrant
before and after such adjustment and the facts upon which such calculations are
based.

         (b) If at any time:

                  (i) the Company shall offer for subscription pro rata to the
holders of its Common Stock any additional shares of stock of any class or other
rights;

                  (ii) the Board of Directors (or any committee thereof) shall
authorize or approve any capital reorganization, or reclassification of the
capital stock of the Company, or share exchange or merger of the Company with,
or sale, disposition or other conveyance of all or substantially all of its
assets to, any Person;

                  (iii) the Company (or any other party) shall institute any
proceeding seeking an order for relief under the Federal bankruptcy laws or
seeking to adjudicate the Company as bankrupt or insolvent, or seeking
dissolution, liquidation or winding up of the Company or seeking reorganization
under any law relating to bankruptcy or insolvency;

then, within ten days of the date of any such occurrence, the Company shall give
the Holder written notice describing in reasonable detail such occurrence.

         VIII. SPECIAL DISTRIBUTIONS. If the holder so elects by sending a
notice to the Company, in the event that the Company shall declare a dividend or
make any other distribution (including, without limitation, in cash, in capital
stock (which shall include, without limitation, any options, warrants or other
rights to acquire capital stock) of the Company, whether or not pursuant to a
shareholder rights plan, "poison pill" or similar arrangement) in other property
or assets, to holders of Common Stock (a "SPECIAL DISTRIBUTION"), then the Board
of Directors shall set aside the amount of such dividend or distribution that
any holder of a Warrant would have been entitled to receive had it exercised
such Warrant prior to the record date for such dividend or distribution. Upon
the exercise of this Warrant, the holder shall be entitled to receive, such

                                       11
<PAGE>   12

dividend or distribution that such holder would have received had such Warrant
been exercised immediately prior to the record date for such dividend or
distribution. Prior to any Special Distribution described in this Section 8, the
Company shall notify each holder (not less than ten Business Days prior to the
occurrence of each Special Distribution) of its intent to make such Special
Distribution and the holder, if it elects to have such distribution set aside
the amount thereof rather than have an adjustment to the Exercise Price as
provided in Section 6, shall notify the Company by sending a notice prior to the
date of any such Special Distribution.

         IX. CERTAIN EVENTS. If any event occurs as to which the provisions of
this Warrant are not strictly applicable or, if strictly applicable would not
fairly protect the rights of the Holder in accordance with the essential intent
and principles of such provisions, then the Company and the Holder shall make an
adjustment in the application of such provisions, in accordance with such
essential intent and principles, so as to protect the Holder's rights as
aforesaid.

         X. The Company shall prepare and file, and cooperate with the holder of
this Warrant so that it may prepare and file, in each case within five Business
Days of a request by such holder, notification and report forms in compliance
with the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (the
"HSR Act"), and shall otherwise fully comply with the requirements of the HSR
Act, to the extent required in connection with the exercise of the Warrant. The
Company shall bear all of its own expenses and all of its own out-of-pocket
expenses (including reasonable legal fees) and any fees and expenses of the
holder.

         XI. TERM OF WARRANT. This Warrant shall remain outstanding and
exercisable until the Expiration Date. To the extent not previously exercised,
the rights represented by this Warrant shall thereupon terminate.

         XII. ISSUE TAX. The issuance of certificates for shares of Common Stock
upon the total or partial exercise of this Warrant shall be made without charge
to the Holder for any issuance tax in respect thereof.

         XIII. CLOSING OF BOOKS. The Company will at no time close its transfer
books in any manner which interferes with the timely exercise of the rights
represented by this Warrant.

         XIV. NO VOTING RIGHTS. This Warrant shall not entitle the Holder to any
voting rights as a shareholder of the Company.

         XV. NOTICES. All notices and communications provided for herein or made
hereunder shall be delivered, or mailed first class with postage prepaid, or
telecopied, addressed in each case as follows, until some other address shall
have been designated in a written notice given in like manner, and shall be
deemed to have been given or made when so delivered or mailed or telecopied:

                                       12
<PAGE>   13

(a)                   if to the Company:    Z-Tel Technologies, Inc.
                                            Suite 220
                                            601 S. Harbour Island Boulevard
                                            Tampa, FL 33602
                                            Attn:  D. Gregory Smith
                                                   Chief Executive Officer
                                            Facsimile No.: (813) 233-4623

(b)                   with a copy to:       Jeffrey H. Kupor
                                            General Counsel
                                            Z-Tel Technologies, Inc.
                                            Suite 220
                                            601 S. Harbour Island Boulevard
                                            Tampa, FL 33602
                                            Facsimile No.: (813) 277-9753

         (c) if to the Holder, at such holder's last known address appearing on
the books of the Company:

Or to such other person or address as the party entitled to notice hereunder
shall designate by notice in accordance with this Warrant.

         XVI. REPLACEMENT OF WARRANT. Upon receipt of evidence satisfactory to
the Company of the loss, theft, destruction or mutilation of this Warrant, and
upon receipt of written indemnification of the Company by the Holder in form and
substance satisfactory to the Company, the Company shall execute and deliver to
the Holder a new Warrant of like date, tenor and denomination.

         XVII. GOVERNING LAW. This Warrant shall be construed and interpreted in
accordance with the internal laws of the State of New York applicable to
agreements made and to be performed entirely within such State.

         XVIII. SUCCESSORS AND ASSIGNS. The provisions of this Warrant shall be
binding upon and inure to the benefit of the parties hereto and their respective
successors, assigns and transferees.

         XIX. FURTHER ASSURANCES. The Company agrees that it will execute and
record such documents as the Holder shall reasonably request to secure for the
Holder any of the rights represented by this Warrant.

         XX. AMENDMENT AND MODIFICATIONS. This Warrant may be amended, modified
or supplemented only by written agreement of the Company and the Holder.

                                       13
<PAGE>   14

         XXI. TRANSFER OF WARRANTS. Any transfer of the rights represented by
this Warrant Certificate shall be effected by the surrender of this Warrant
Certificate, along with the form of assignment attached hereto, properly
completed and executed by the registered holder hereof, at the principal
executive office of the Company in the United States of America, together with
an appropriate investment letter, if deemed reasonably necessary by counsel to
the Company to assure compliance with applicable securities laws. Thereupon, the
Company shall issue in the name or names specified by the registered holder
hereof and, in the event of a partial transfer, in the name of the registered
holder hereof, a new Warrant Certificate or Certificates evidencing the right to
purchase such number of shares of Common Stock as shall be equal to the number
of shares of Common Stock then purchasable hereunder.

                  IN WITNESS WHEREOF, the Company has caused this Warrant to be
signed by its duly authorized officers and this Warrant to be dated as of the
10th day of November, 2000.

                                        Z-TEL TECHNOLOGIES, INC.

                                        By: /s/ D. Gregory Smith
                                           ------------------------------------
                                           D. Gregory Smith
                                           President and Chief Executive Officer

                                       14
<PAGE>   15

                                                                       EXHIBIT A

                                 EXERCISE NOTICE

To:

                  The undersigned Holder, pursuant to the terms and conditions
of that certain Warrant, issued by Z-Tel Technologies, Inc., a Delaware
corporation, and dated as of September _, 2000, hereby exercises such Warrant to
the extent of

 ( ) shares of the Common Stock covered by such Warrant, and hereby agrees to
make payment in full for each of such shares at the per share exercise price
provided by such Warrant.

Date:
     -----------------

                                          Signature:
                                                     --------------------------
                                          Address:
                                                  -----------------------------

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

<PAGE>   16

                           [Form of Assignment Form]

                  [To be executed upon assignment of Warrants]

                  The undersigned hereby assigns and transfers this Warrant
Certificate to ____________________ whose Social Security Number or Tax ID
Number is _________________ and whose record address is
_____________________________________, and irrevocably appoints ________________
as agent to transfer this security on the books of the Company. Such agent may
substitute another to act for such agent.

                                                 Signature:

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

Date:
      ---------------------------

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