Appendix — Specifications
Standard Telephone Interface Options
170 Strata CIX General Description 12/07
Standard Telephone Ringer Specifications
Specifications for standard telephone ringers appear in Table 39.
Standard Telephone Interface Options
The table below summarizes the standard telephone interface cards and their capacities and
capabilities.
Table 39 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
Table 40 Standard Telephone Interface Options
Interface
Card
CIX Software
Release
Requirement
Interface
Circuits
per Card
Message
Waiting
Lamp
Control
Message Waiting
Off-Hook
Audible Alert
(stutter dial tone)
Off-Premise
Station
support
(R48S card)
Standard
telephone
Caller ID and
MW display.
Voice Mail Port,
FAX machine,
Modem,
Standard 2500
telephone
BSTU1A All Releases 8 Ye s Ye s Ye s No Ye s
BSTCIU1A
R4.1 and
above
8 Ye s Ye s Ye s Ye s Ye s
BSLU1A/
BSLS1A
R3.1 and
above
8/8 total 16 No Ye s No No Ye s
ASTU, LSLU
CIX100
CIX200
2 No Ye s No No Ye s
Motherboard
and GSTU
CIX40 1 No Ye s No No Ye s
Note: All standard telephone interface cards, including ASTU and LSLU, support off-hook selection of an outside line
in CIX R4.1 and later.