Nortel Meridian 1 Option 11C, Administration And Maintenance

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Page 170 of 492 Chapter 5 — ISDN BRI line and packet data implementation
553-3011-311 Standard 7.0 May 1999
UILC DSL configuration
The UILC supports only point-to-point transmission. The maximum DSL
length should not exceed 5 km (16,404 ft). Figure 18 shows a typical U
interface DSL with an NT1 terminating the DSL and providing an S/T
interface to an ISDN BRI terminal.
Figure 18
Point-to-Point UILC DSL
This interface is designed to use most of the existing non-loaded twisted pair
wiring in North America. Not all the twisted pair cables are suitable for ISDN
BRI application. Before you use a section of this cable for Basic Rate Access,
you must verify its suitability by performing the following tests:
— determine the type and length of the cable and total signal loss of the DSL
— determine total signal loss contributed by the bridge taps on the DSL
— verify that there are no consistent or random noise sources that may
affect the transmission quality
— verify that the cable impedance is as expected, which indicates that there
are no bridge taps, no wet cable, and no split pairs, or other damage.
— determine the outlet pinout at the terminal location
553-7573.EPS
Modular Cable
10m (35 ft)
maximum
Option 11
UILC DSL length
Network
Termination
Cross-connect
terminal
Cross-connect
terminal
NT1