
Configuring E1 or T1 Services
117021-A Rev. A 6-5
Figure 6-3. Bipolar with 8-Zero Substitution
You can enable or disable B8ZS support on this interface, depending on the ability
of the associated T1 equipment to support B8ZS.
Specifying Line Buildout
Line buildout conditions the router signals to mitigate attenuation, and depends on
the physical length of the T1 line. The carrier determines line buildout for DS1
(long-haul). DSX-1 (short-haul) line buildout correlates with cable length.
By default, the T1 line buildout for DSX-1 is based on a physical line length of
1 ft. Configure a line length based on the approximate length of the cable
connecting the router and the associated T1 equipment, from 1 to 655 ft.
Site Manager: B8ZS Support parameter: page A-58
Site Manager: Line Buildout parameter: page A-59
Line voltage
Data
1 1 10 0 0 0 0
000 0
Substituted byte
Binary polar
violation
LS0010A
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