October 5, 2000 DEUTSCHE BANK SECURITIES INC. U.S. BANCORP PIPER JAFFRAY INC. DAIN RAUSCHER INCORPORATED As Representatives of the Several Underwriters c/o Deutsche Bank Securities Inc. One South Street Baltimore, Maryland 21202 Ladies and Gentlemen:...Natural Microsystems Corp • October 12th, 2000 • Telephone & telegraph apparatus • Maryland
Company FiledOctober 12th, 2000 Industry Jurisdiction
TIA SECTION INDENTURE SECTIONIndenture • October 12th, 2000 • Natural Microsystems Corp • Telephone & telegraph apparatus • Massachusetts
Contract Type FiledOctober 12th, 2000 Company Industry Jurisdiction
Exhibit 4.2 FIRST SUPPLEMENTAL INDENTUREFirst Supplemental Indenture • October 12th, 2000 • Natural Microsystems Corp • Telephone & telegraph apparatus
Contract Type FiledOctober 12th, 2000 Company Industry