Common use of Entire Agreement; No Amendment Clause in Contracts

Entire Agreement; No Amendment. This Agreement contains the entire agreement and supersedes all prior and contemporaneous oral or written communications and agreements between the parties relating to the subject matter of this Agreement. Neither this Agreement, nor any of its terms, may be changed, added to, amended, waived or varied except in writing signed by Employee and by either the CEO of the Company, the General Counsel of the Company or the General Counsel of Allegiance Telecom, Inc.

Entire Agreement; No Amendment. This Agreement contains the entire agreement between the parties respecting the subject matter hereof and supersedes all prior and contemporaneous oral or written communications and agreements between the parties relating to employment or payments in the subject matter of this Agreementevent employment terminates. Neither this Agreement, nor any of its terms, may be changed, added to, amended, waived or varied except in a writing signed by Employee Executive and by either the CEO of the Company, the General Counsel of the Company or the General Counsel of Allegiance Telecom, Inc..

Entire Agreement; No Amendment. This Agreement contains the entire agreement between the parties with respect to the subject matter described herein and supersedes all other prior and contemporaneous oral or written communications and agreements between the parties relating to the this same subject matter of this Agreementmatter. Neither this Agreement, nor any of its terms, may be changed, added to, amended, waived or varied except in a writing signed by the Parties (only by an officer or other person other than Employee and authorized to do so by either the CEO Board of the Directors on behalf of Company, the General Counsel of the Company or the General Counsel of Allegiance Telecom, Inc.).

Entire Agreement; No Amendment. This Agreement contains the entire agreement and supersedes all prior and contemporaneous oral or written communications and agreements between the parties relating to the subject matter of this Agreement. Neither this Agreement, nor any of its terms, may be changed, added to, amended, waived or varied except in writing signed by Employee and by either the CEO CEO, CFO or COO of the Company, the General Counsel of the Company or the General Counsel of Allegiance Telecom, Inc..

Entire Agreement; No Amendment. This Agreement contains the entire agreement and supersedes all prior and contemporaneous oral or written communications and agreements between the parties relating to the subject matter of this Agreement. Neither this Agreement, nor any of its terms, may be changed, added to, amended, waived or varied except in writing signed by Employee and by either the CEO COO or CFO of the Company, the General Counsel of the Company or the General Counsel of Allegiance Telecom, Inc..

Entire Agreement; No Amendment. This Agreement contains the entire agreement between the parties respecting the subject matter hereof and supersedes all prior and contemporaneous oral or written communications and agreements between the parties relating to employment or payments in the subject matter of this Agreementevent employment terminates. Neither this Agreement, nor any of its terms, may be changed, added to, amended, waived or varied except in writing signed by Employee Executive and by either the CEO of the Company, the General Counsel of the Company (by an officer or other person authorized to do so by the General Counsel of Allegiance Telecom, Inc.Board other than Executive).

Entire Agreement; No Amendment. This Agreement contains the entire agreement between the parties respecting the subject matter hereof and supersedes all prior and contemporaneous oral or written communications and agreements between the parties relating to employment or payments in the subject matter of this Agreementevent employment terminates. Neither this Agreement, nor any of its terms, may be changed, added to, amended, waived or varied except in writing signed by Employee Executive and Company (by either an officer or other person other than Executive, which officer or person has been authorized to do so by the CEO Board of the Directors of Company, the General Counsel of the Company or the General Counsel of Allegiance Telecom, Inc.).