Mitel SX-2000 EL Information Manual page 241

Loop Lengths
Loop lengths for various cards are given below:
DNIC Line Card or DNIC Module
(Connected to Digital Telephone)
(Connected to DNIC Console)
ONS Card
ONS Module (SX-200 SPINE)
OPS Card
COV Card
E & M Trunk
DID Trunk Card
LS/GS Trunk Card - CO Trunk resistance
LS/CLASS II Module - CO Trunk resistance
T1 Trunk (cable lengths not loop lengths for 22
gauge wire)
S1 only closed: 0 - 45.8 m (0 - 150 ft)
S2, S3, S4 closed: 45.8 - 137.3 m (150 - 450 ft)
S5, S6, S7 closed: 137.3 - 200 m (450 - 655 ft)
50003510
Card Type
- CO Trunk resistance
Revision A
Wire Gauge
Loop Length
(AWG)
24 1006 m (3300 ft)
26 1006 m (3300 ft)
24 1006 m (3300 ft)
26 1006 m (3300 ft)
22 3560 m (11700 ft)
24 2250 m (7400 ft)
26 1400 m (4600 ft)
22 1784 m (5850 ft)
24 1128 m (3700 ft)
26 700 m (2300 ft)
22 18290 m (60000 ft)
24 11520 m (37800 ft)
26 7225 m (23700 ft)
22 2000 m (6600 ft)
24 1500 m (5000 ft)
26 1000 m (3300 ft)
22 2715 m (8900 ft)
24 1708 m (5600 ft)
26 1068 m (3500 ft)
na 2240 ohms
na 1600 ohms
na 1600 ohms
22 These are cable lengths,
not loop lengths. Set DIP
switches on T1 Trunk
card for correct
equalization depending
on cable length between
the T1 Trunk and the
Channel Service Unit
(CSU).
Specifications
227