Nortel Meridian 1 Administration And Maintenance page 172

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553-3011-311 Standard 7.0
Chapter 5 — ISDN BRI line and packet data implementation
Cable characteristics
Table 5 lists the parameters of the various cable types used in determining the
S/T DSL configuration limits. The cables listed are those used for telephony
wiring applications, and the characteristics listed are for Northern Telecom
cable at 96 kHz and 20° C (68° F).
Table 5
Cable types and characteristics
Cable type
Outside PIC
Outside PULP
Outside PIC
Outside PULP
Outside PIC
Outside PULP
Inside riser
Inside riser
Inside riser
Inside Z station (FT1)
Inside Z station (FT4)
Inside type D (3 and 4 pair)
Inside type D (25 pair)
The following examples show some typical SILC DSL configurations. These
are:
— point-to-point DSL
— short passive DSL
— extended passive DSL
— branched passive DSL
May 1999
Loss
Gauge dB/k ft
AWG (dB/km)
22 1.6 (5.4)
22 1.8 (6.0)
24 2.3 (7.6)
24 2.5 (8.2)
26 3.3 (11.0)
26 3.3 (11.0)
22 1.6 (5.2)
24 2.3 (7.5)
26 3.2 (10.5)
22 1.6 (5.2)
22 2.0 (6.6)
24 2.6 (8.5)
24 2.9 (9.5)
Delay
µs/k ft
(µs/km)
1.7 (5.5)
1.6 (5.3)
1.7 (5.6)
1.7 (5.5)
1.8 (5.9)
1.7 (5.7)
1.6 (5.2)
1.7 (5.6)
1.8 (5.9)
1.8 (5.9)
2.0 (6.6)
1.9 (6.2)
2.0 (6.6)