Panasonic ICX Manual
ICX-4.5-200
ICX (International) issued June 2000
87
Section 200 - General Description
Chapter 6 - Specifications
Cabling Specifications
Maximum Cabling Distances
Loop Type Resistance
Resistance
Cable Gauge (AWG)
Maximum Cabling Length in Feet
(distance from the ICX)
Key Telephone, EM/24
40 Ohms
22
1239
24
779
26
490
DSS/72
20 Ohms
22
619
24
330
26
245
SLT
100 Ohms
22
3097
24
1948
26
1225
Doorphone (loop between the
ICX and Doorphone Adapters)
ICX and Doorphone Adapters)
10 Ohms
22
309
24
194
26
122
Doorphone (loop between the
Doorphone Adapter and the
Doorphone)
Doorphone Adapter and the
Doorphone)
10 Ohms
22
1239
24
779
26
490
NOTE: If a TAPI box or Voice Response Telephone Adapter is installed with the telephone, the measured resistance must be
less than 20 Ohms and the maximum cabling distance reduced in half compared to a standard key telephone.
less than 20 Ohms and the maximum cabling distance reduced in half compared to a standard key telephone.