NEC DS1000 Operation Manual page 53

Keyset Voltages
DC voltage measured at the MDF (between
tip and ring)
Minimum operating DC voltage measured at
station jack (between tip and ring)
Single Line Telephone Voltages
DC voltage measured at the MDF (between
tip and ring)
Off-hook voltage
Ringing voltage
Trunk Voltages
Ringing voltage
Battery (from telco)
Output Impedance:
Output Level:
Equipment
Cabinet:
Non-display Keyset:
Display Keyset:
Super Display Keyset:
24-Button DSS Console
110-Button DSS Console:
Analog Door Box:
2-OPX Module:
DS1000 Hardware Manual
Telephone Voltages
Minimum: 36 VDC
Maximum: 44 VDC
24 VDC
Minimum: 36 VDC
Maximum: 44 VDC
6.5 VDC (typical – depending on telephone
type and loop length)
50-70 VAC, sine wave
42-103 VAC @ 20 Hz
44-56 VDC
External Paging
600 Ohm
0 dBr @ 1.0 KHz
Mechanical Specifications
Width Depth
13 3/4" 2 1/2"
7 1/4" 9"
7 1/4" 9"
7 1/4" 9"
2 1/2" 9"
7 7/8" 8 3/4"
3 3/4" 1"
9 3/8" 7 3/8"
Section 6: Specifications and Parts ◆ 6-3
Specifications
Height Weight
10 1/2" 4 lbs 1 oz
2 7/8" 1 1b 11 oz
2 7/8" 1 lb 12 oz
2 7/8" 2 lb
2 3/4" 9 oz
2 3/4" 1 lb 6 oz
5" 6 oz
1 1/4" 3 lbs
6