Cisco 2950 Hardware Installation Guide - Page 107

Appendix B Connectors and Cables Cable and Adapter Specifications Table B-1 Catalyst 2950ST-24 LRE and Catalyst 2950ST-24 LRE 997 Switch RJ-21 Cable Pinouts Function Pin Pin Function Port 5 Tip 5 30 Port 5 Ring Port 6 Tip 6 31 Port 6 Ring Port 7 Tip 7 32 Port 7 Ring Port 8 Tip 8 33 Port 8 Ring Port 9 Tip 9 34 Port 9 Ring Port 10 Tip 10 35 Port 10 Ring Port 11 Tip 11 36 Port 11 Ring Port 12 Tip 12 37 Port 12 Ring Port 13 Tip 13 38 Port 13 Ring Port 14 Tip 14 39 Port 14 Ring Port 15 Tip 15 40 Port 15 Ring Port 16 Tip 16 41 Port 16 Ring Port 17 Tip 17 42 Port 17 Ring Port 18 Tip 18 43 Port 18 Ring Port 19 Tip 19 44 Port 19 Ring Port 20 Tip 20 45 Port 20 Ring Port 21 Tip 21 46 Port 21 Ring Port 22 Tip 22 47 Port 22 Ring Port 23 Tip 23 48 Port 23 Ring Port 24 Tip 24 49 Port 24 Ring No connect 25 50 No connect Table B-2 lists the RJ-21 cable pinouts on the Catalyst 2950ST-8 LRE switches. Table B-2 Catalyst 2950ST-8 LRE Switch RJ-21 Cable Pinouts Function Pin Pin Function Port 1 Tip 1 26 Port 1 Ring Port 2 Tip 2 27 Port 2 Ring Port 3 Tip 3 28 Port 3 Ring Port 4 Tip 4 29 Port 4 Ring Port 5 Tip 5 30 Port 5 Ring Port 6 Tip 6 31 Port 6 Ring Port 7 Tip 7 32 Port 7 Ring Port 8 Tip 8 33 Port 8 Ring No connect 9 34 No connect No connect 10 35 No connect OL-6156-01 Catalyst 2950 Switch Hardware Installation Guide B-9