8 Chapter 2S TEP 2: CONNECTING YOUR EQUIPMENTDepending on the product you purchased, the Netopia ISDN PC Cardwith U interface or the Netopia ISDN PC Card with S/T interface, theappropriate equipment is provided. Your geographical location typicallydictates the ISDN interface type to use. The following tablesummarizes the interface and equipment used by geographical region:U INTERFACEThe U interface is used in North America where an external NT1 isrequired to make an ISDN connection. Plug the RJ-45 cable into yourISDN wall jack. Then connect the cable to the RJ-45 port on theU interface connector.Connecting the U interface connector and RJ-45 cableRegion Interface Provided EquipmentNorth America U interface Integrated-NT1 (ISDN U interfaceconnector) and RJ-45 to RJ-45cableOutside NorthAmerica (exceptAustralia)S/T interface ISDN S/T interface connector andRJ-45 to RJ-45 cableAustralia S/T interface ISDN S/T interface connector,RJ-45 to RJ-45 cable, andterminating resistor