Specifications

Appendix – Specifications
Standard Telephone Ringer Specifications
Strata CIX General Description 08/14 203
Standard Telephone Ringer Specifications
Specifications for standard telephone ringers appear in Table 44.
Table 44 Standard Telephone Ringer Specifications
Interface Card Ring Voltage
Ring
Capacity
MW Voltage
Modem
Data Rate
Ring Cadence
RSTU3 or RDSU
75 Vrms@Ren1,
60 Vrms Ren 3,
20Hz
RSTU3:
3.0 ringers
per circuit
RDSU:
1.5 ringers
per circuit
RSTU3 and
BSTU: -
120VDC~-
85VDC
0.9 sec. high/
9.1 sec. low
1 telephone
per circuit
(max.)
14,400 bps
maximum
Ring Cadence 1: (RSTU,
RDSU, BSTU, BSLU,
BSLS) External Ring:
20Hz, 1 sec. ON - 3 sec.
Off
Internal Ring: 20Hz, 0.4
sec. On - 0.2 sec. Off
- 0.4 sec. On - 3 sec. Off
Recall: 20Hz, 1 sec. On -
1 sec. Off
Ring Cadence 2: (RSTU,
RDSU, BSTU)
External Ring: 20Hz, 0.4
sec. On - 0.2 sec. Off
- 0.4 sec. On - 3 sec.
Off11
Internal Ring: 20Hz, 1
sec. On - 3 sec. Off
Recall: 20Hz, 1 sec. On -
3 sec. Off
BSTU
3 ringers
per circuit
BSLU/BSLS
ASTU
LSLU
CIX40 mother
board
GSTU
1 ringer per
circuit
None
BSTCIU
3 ringers
per circuit
110 V +/- 10
1 Hz
Ring: 20Hz, 2 sec. ON -
4 sec. Off or 1 sec. ON -
3 sec. Off