Installation Manual
H3C AR 18-3XE/18-21X Series Routers
Chapter 2 Installing the
Router
2-9
2.6 Connecting the Router to WAN
The AR 18-3XE/18-21X series provides two types of WAN
interfaces: ISDN S/T and ADSL2+. The following subsections
describe how to connect them.
2.6.1 Connecting the ISDN Interface
I. ISDN cable
The ISDN S/T cable is a four-wire twisted pair cable. At both ends
of the cable are RJ-45 connectors, with pins 3 and 6 for sending data
and pins 4 and 5 for receiving data.
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Figure 2-5
ISDN S/T cabl
II. Connecting the ISDN interface
Follow these steps to connect an ISDN cable to an ISDN BRI
port:
Step 1: Identify the model of your router.
Step 2: Identify the type of the ISDN line provided by your service
provider.
Step 3: Connect the cable.
