NEC UNIVERGE NEAX 2000 IPS, Configuration Manual, Page: 95 / 96

Chapter 8 System Capacity Zone Transceiver Line Conditions
NEAX 2000 IPS Configuration Guide
NDA-24347, Issue 1
Page 85
Zone Transceiver Line Conditions
Note:
Zone Transceiver requires -48 V power under normal conditions. PBX power supply at -45 V and -43 V
shows ZT Line Conditions in the event of lower voltage status (refer to
Table 8-5 ).
Table 8-5 Zone Transceiver Line Conditions
S-INTERFACE
LINE CONDITIONS
U-INTERFACE
LINE CONDITIONS
PBX Power Supply at -48 V (Standard) 4-Wire 2-Wire 4-Wire
0.4
ϕ
2,500 ft. (762 m) 2,500 ft. (762 m) 4,300 ft. (1,310 m)
0.5
ϕ
4,000 ft. (1,219 m) 4,000 ft. (1,219 m) 6,900 ft. (2,103 m)
0.65
ϕ
5,500 ft. (1,676 m) 5,500 ft. (1,676 m) 9,500 ft. (2,895 m)
0.9
ϕ
8,000 ft. (2,438 m) 8,000 ft. (2,438 m) 13,000 ft. (3,958 m)
PBX Power Supply at -45 V Note 4-Wire 2-Wire 4-Wire
0.4
ϕ
2,000 ft. (609 m) 2,000 ft. (609 m) 3,500 ft. (1,066 m)
0.5
ϕ
3,200 ft. (975 m) 3,200 ft. (975 m) 5,600 ft. (1,706 m)
0.65
ϕ
4,700 ft. (1,432 m) 4,700 ft. (1,432 m) 8,200 ft. (2,499 m)
0.9
ϕ
7,000 ft. (2,131 m) 7,000 ft. (2,131 m) 12,200 ft. (3,718 m)
PBX Power Supply at -43 V
Note
4-Wire 2-Wire 4-Wire
0.4
ϕ
1,800 ft. (548 m) 1,800 ft. (548 m) 3,100 ft. (944 m)
0.5
ϕ
2,900 ft. (883 m) 2,900 ft. (883 m) 5,000 ft. (1,524 m)
0.65
ϕ
4,400 ft. (1,340 m) 4,400 ft. (1,340 m) 7,600 ft. (2,316 m)
0.9
ϕ
6,400 ft. (1,948 m) 6,400 ft. (1,948 m) 11,000 ft. (3,352 m)
Local Power Supply (with AC Adapter)
0.4
ϕ
3,900 ft. (1,189 m) 11,000 ft. (3,350 m)
0.5
ϕ
4,400 ft. (1,341 m) 13,000 ft. (3,958 m)
0.65
ϕ
5,500 ft. (1,676 m) 13,000 ft. (3,958 m)
0.9
ϕ
8,000 ft. (2,438 m) 13,000 ft. (3,958 m)