3Com 5000 Series Installation Manual page 53

3Com Router 5000 Family
Installation Guide
2) T1 interface cable
T1 interface matches 100Ω standard shielded cable. See the following table:
Figure 4-35 T1 interface cable
You can also choose to use network connector assembly, for extending two T1
interface cables.
Note:
T1 interface cable and network connector assembly are optional.
3) Connecting T1 interface cable
Caution:
Examine the interface mark before connection to avoid cable mis-insertion and
router damage.
When the T1 interface cable is routed outdoors, you need use the special lightning
protection unit at the input end to prevent possible damage.
Step 1: Insert one end of the T1 interface cable into the E1 interface of the router.
Step 2: Insert the other end to the peer device.
If one cable is enough in length, insert the other end to the peer device.
If not, you need to extend the T1 interface cable with a network connector
assembly as shown in the following figure:
3Com Corporation
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Chapter 4 Installation of the Router