Instruction manual

Appendix – Specifications
3000-series Telephone Option Circuit Cards
108 Strata CTX General Description 10/04
Standard Telephone Ringer Specifications
Specifications for standard telephone ringers appear in Table 35.
3000-series Telephone Option Circuit Cards
Digital telephones can be upgraded with option circuit cards to add a number of features. Each of
these upgrades shares a circuit with the telephone that it is connected to and is not considered a
station. See
Table 36 for more information.
Table 35 Standard Telephone Ringer Specifications
BSTU, RSTU3 or RDSU
Ring voltage
RSTU3 or RDSU: 80V RMS sine wave
BSTU: 75 Vrms@Ren1, 20Hz
Ringing capability
BSTU and RSTU3: 3.0 ringers per circuit
RDSU: 1.5 ringers per circuit
Message Waiting voltage
BSTU and RSTU3 : -120VDC~-85VDC
0.9 sec. high/9.1 sec. low
1 telephone per circuit (max.)
Modem interface data rate BSTU and RSTU3: 14,400 bps maximum
BSTU, RSTU3 or RDSU:
Internal and External Ringing Cadence:
For Release 1.3 and higher, two types of
ringing cadences can be selected in
system programming.
Ringing Type1: 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
Ringing Type 2: Same Ringing Cadence as DK.
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
Table 36 3000 Telephone Subassembly Upgrades
Subassembly
No. per
Phone
Function
BVSU
1
1. Telephones with the BPCI cannot have Speaker OCA (BVSU) or Add-on modules. Also, DKT3001 telephones
cannot have CTI (BPCI), Speaker OCA (BVSU) or Add-on modules.
1
Speaker Off-hook Call Announce (OCA): Provides interface for
digital telephone to receive Speaker OCA. Not required for Handset/
Headset OCA.
BHEU or
HHEU
1
Headset and external ringer telephone interface: Can be installed
with BVSU, BPCI or DADM.
BPCI
1
1 Desktop PC Interface for CTI applications.
DADM3020
1
1 or 2
Add-on Module (ADM): Provides telephone with 20 (or 40 with two
ADMs) additional feature buttons.