Cisco各类线缆

T3/E3 75-Ohm Coaxial Cable

Where used:

• To connect two LS2020 switches via their T3/E3 access cards.
  
  
• To connect an LS2020 T3/E3 access card to an external device.
  
  
• To connect two LS2020 switches via their T3, E3/PLCP, or E3/G.804 medium-speed access cards.
  
  
• To connect an LS2020 T3, E3/PLCP, or E3/G.804 medium-speed access card to an external device.
  
  

The T3/E3 75-ohm coaxial cable is available from Cisco Systems in four different lengths. Use the appropriate number from the table below for ordering purposes.

Manufacturing No. Length Order No.

72-0998-01

3 feet

LS-CAB-T3-CX3=

72-0399-01

25 feet

LS-CAB-T3-CX25=

72-1000-01

50 feet

LS-CAB-T3-CX50=

72-1001-01

100 feet

LS-CAB-T3-CX100=

Figure 3-17 is a physical representation of 75-ohm T3/E3 coaxial cable.

OC-3C Connectors and Cables

Figure 3-18 shows the external connectors on both the multimode and single mode OC-3c access cards. The multimode OC-3c and single mode OC-3c cables are described in separate sections below.

Multimode interface connector type: Duplex SC

Connectors per multimode access card: 4 (2 per port; ports are numbered 0 and 1)

Single mode interface connector type: ST

Connectors per single mode access card: 4 (2 per port; ports are numbered 0 and 1)