A-2 Strata CTX DKT3000/3500-Series Digital Telephone October 2002Safety Approval Notes to UsersSELV BSIS1A For connection of Voice Mail and Call Logging Equipment.RS232 ports.TNV3 RSTU1F For connection of approved 2 wire devices.TNV3 RSTU3F/ASTU1F For connection of approved 2 wire devices.TNV3PCOU2F/PCOUS2FRCOU/RCOS/RCOUSFor connection to PTO provided Loop Calling UnguardedClear exchange lines.TNV1 RBSU2A 2 Cct ISDN2, (TBR3), Basic Rate I/F. For connection to euro-ISDN services.TNV1 RBSU1A 2 Cct ISDN2, (TBR3), Basic Rate I/F. For connection to euro-ISDN services.TNV1 RBSS1A & RBSS2A 2 Cct ISDN2, Basic Rate I/F. For connection to euro-ISDNservices.TNV1 RPTU1F/RPTU2F 1ccts ISDN30, (TBR4), primary rate I/F. For connection toeuro-ISDN services.TNV2 PACU2F/PACU3F 4Cct AC15 Private Circuit I/F, (TBR17). For connection toPTO Private Circuit services.TNV2 PEMU2F/REMU 4Cct AC15 Private Circuit I/F, (TBR17). For connection toPTO Private Circuit services.SELV BIOU1A Contains various ports for connection of audio pagingamplifiers, dry relay contacts to control external equipment.SELV BVPU1A Voice Over IP interface cards. House Ethernet/RS232 ports.SELV Stratagy DK Intergrated Voice Mail unit. House R232 ports.SELV RRCU1A Optical interface board for connecting remote cabinets.SELV BPCI1A USB port for connection of PC for CTI.SELV DKT2500/DKT3000/DKT3500 Headset ports on any of the range of key telephones.Table A-1(continued)Type of Circuit(EN60950Classification)Port Location Port Description