CTG'S FULL LINE OF NULL MODEM CABLES ARE 100% FOIL SHIELDED USING 28 AWG STRANDED CONDUCTORS.THE 10FT. NULL MODEM IS USED FOR MOST NULL MODEM APPLICATIONS WHERE A NULL MODEM PINOUT IS REQUIRED. NOTE: THIS CABLE IS NOT APPROPRIATE FOR USE TO CONNECT AN EXTERNAL MODEM. USE CTG PN 03088 FOR 10' MODEM APPLICATIONS.