EXHIBIT 4.1 SUPPLEMENTAL INDENTURE SUPPLEMENTAL INDENTURE, dated as of the 10th day of October, 1997, to the Indenture (the "Indenture") dated as of November 1, 1995, by and between Porta Systems Corp., a Delaware corporation (the "Company"), as...Supplemental Indenture • November 12th, 1997 • Porta Systems Corp • Telephone & telegraph apparatus
