3Com 3C63400-3AC-C - PathBuilder S700 Switch, Reference Manual

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Step 4: Connect I/O Cabling and Wiring 31
If you are using a G703 coax physical connection to connect the E1 CBR line to the
interface, you must use the E1 Balun Adapter (part number 3C63904) for proper
impedance.
The DSX-1 CBR module supports LBOs (LIne Build Outs) to CSU of up to 655 feet.
You must configure the LBO via the local terminal or NMS. See “Configuring
DSX-1 CBR or E1 CBR Modules” in Chapter 5, for details. You can typically make
connections locally to DTE equipment without DSU/CSUs, as long as the
equipment supports a direct T1 interface and can recover T1 signal. See Figure 15.
Figure 15 DSX-1/E1 CBR Module Connections
You can make connections from the E1 CBR module locally to DTE equipment as
long as the equipment supports a direct E1 interface and can recover an E1 signal.
Once you have connected the DSX-1 CBR or E1 CBR module, verify the front panel
common LED sequence illustrated in Figure 16.
PathBuilder S700
DSX-1 CBR
or
E1 CBR
Channel
Bank
DS1 Structured for DS0
Drop and Insert or
Unstructured for DS1
Tunneling
PBX