This Amendment No. 1 (this "Amendment") to that certain Amended and --------- Restated Agreement and Plan of Merger, dated as of August 4, 1999 (the "Merger ------ Agreement") by and among CAIS Internet, Inc., a Delaware corporation ("CAIS"),...Agreement and Plan of Merger • September 17th, 1999 • Cais Internet Inc • Services-computer processing & data preparation • California
AMONGAgreement and Plan of Merger • September 17th, 1999 • Cais Internet Inc • Services-computer processing & data preparation • California
Exhibit 2.3 REGISTRATION RIGHTS AND LOCK-UP AGREEMENTRegistration Rights and Lock-Up Agreement • September 17th, 1999 • Cais Internet Inc • Services-computer processing & data preparation • California
