Toshiba Strata Dk14, Dk40i, Dk424i General Description Manual

							Strata DK424i
ISDN BRI Circuit Capacity Guidelines
Strata DK General Description    6/0025
ISDN BRI Circuit Capacity Guidelines
The tables in this section show the maximum capacities for ISDN BRI circuits using RBUU/
RBUS and/or RBSU/RBSS PCBs. Guidelines 1~7 below apply to Tables 16~19.
1. Each BRI circuit can be configured to support either one BRI (TE or TA) ISDN station; or two 
ISDN line channels.
2. A maximum of eight BRI circuits may be used as BRI line circuits to connect to the ISDN 
Central Office. Each circuit provides two CO line channels to the DK424i.
3. Each BRI circuit (S/T and/or U-type) provides two B channels plus one D channel and reduces 
the system capacity by two station ports and two CO lines, regardless of how it is configured 
(line or station). Each (S/T) BRI station circuit allows up to two TE-1 and TA devices to share 
the BRI B channels (two simultaneous calls maximum per BRI circuit.). Each BRI-U station 
circuit supports one TE-1 or TA device.
4. In Ta b l e s  1 6~19, other stations include Toshiba digital and electronic telephones, or attendant 
consoles, standard telephones and devices.
5. In Ta b l e s  1 6~19, other lines include analog and digital (T1 or PRI) loop start, ground start, 
DID, and Tie lines.
6. RBSS can only be used for BRI stations. All other BRI PCBs can be configured as line or 
station BRI circuits.
7. Some configurations require T1 or PRI lines to reach the maximum configuration.
 
Table 16 B1CU Maximum ISDN BRI 
ConfigurationTable 17 B2CAU/B2CBU Maximum ISDN BRI 
Configuration
B1CU
1 Cabinet
8 Universal Slots
56 Stations Max.
32 CO Lines Max.
64 Stations + Lines Max.
BRI Circuits 
(2B + 1D channel each)Other Stations & 
Lines Combined 
(see Guidelines 4 & 5)
14 8
12 16
10 24
832
640
448
256
064
B2CAU/B2CBU
2 Cabinets
14 Universal Slots
104 Stations Max.
120 CO Lines Max.
128 Stations + Lines Max.
BRI Circuits 
(2B + 1D channel each)Other Stations & Lines 
Combined (see Guidelines 
4 & 5)
30 8
26 24
22 40
18 56
14 72
10 88
6 104
2 120
0 128 
						

							Strata DK424i
ISDN BRI Circuit Capacity Guidelines
26Strata DK General Description    6/00
 
Configurations using analog line circuits are shown in Ta b l e  1 4. Configurations using T1 and/or 
ISDN PRI lines are shown in Table 15. All capacity configurations Tables 14~23 assume one 
universal slot is used for an External Page/Maintenance interface PCB.
Table 18 B3CAU/B3CBU Maximum ISDN
BRI ConfigurationTable 19 B5CAU/B5CBU Maximum ISDN BRI 
Configuration
 
B3CAU/B3CBU
3 Cabinets
28 Universal Slots
192 Stations Max.
120 CO Lines Max.
248 Stations + Lines Max.
BRI Circuits 
(2B + 1D channel each)Other Stations & Lines 
Combined (see Guidelines 
4 & 5 on Page 25)
48 56
44 72
40 88
36 104
32 120
28 136
24 152
20 168
16 184
12 200
8 216
4 232
0 248
B5CAU/B5CBU
5 Cabinets 
48 Universal Slots
336 Stations max.
200 CO Lines max.
432 Stations + Lines Max.
BRI Circuits 
(2B + 1D channel each)Other Stations & Lines 
Combined (see Guidelines 
4 & 5 on Page 25)
72 144
68 160
64 176
60 192
56 208
52 224
48 240
44 256
40 272
36 288
32 304
28 320
24 336
20 352
16 368
12 384
8 400
4 416
0 432 
						

							Strata DK424i
ISDN BRI CIrcuit Capacity Guidelines
Strata DK General Description    6/0027
ISDN BRI CIrcuit Capacity Guidelines
The tables in this section show the maximum capacities for ISDN BRI circuits using RBUU/
RBUS and/or RBSU/RBSS PCBs. Guidelines 1~7 below apply to Tables 20~23.
1. Each BRI circuit can be configured to support either one BRI (TE or TA) ISDN station; or two 
ISDN line channels.
2. A maximum of eight BRI circuits may be used as BRI line circuits to connect to the ISDN 
Central Office. Each circuit provides two CO line channels to the DK424i.
3. Each BRI circuit (S/T and/or U-type) provides two B channels plus one D channel and reduces 
the system capacity by two station ports and two CO lines, regardless of how it is configured 
(line or station). Each (S/T) BRI station circuit allows up to two TE-1 and TA devices to share 
the BRI B channels (two simultaneous calls maximum per BRI circuit.). Each BRI-U station 
circuit supports one TE-1 or TA device.
4. In Ta b l e s  2 0~23, other stations include Toshiba digital and electronic telephones, or attendant 
consoles, standard telephones and devices.
5. In Ta b l e s  2 0~23, other lines include analog and digital (T1 or PRI) loop start, ground start, 
DID, and Tie lines.
6. RBSS can only be used for BRI stations. All other BRI PCBs can be configured as line or 
station BRI circuits.
7. Some configurations require T1 or PRI lines to reach the maximum configuration.
Table 20 B1CU Maximum ISDN BRI Configuration
B1CU
1-Cabinet
8-Universal Slots
56-Stations Max.
32-CO Lines Max.
64-Stations + Lines Max.
BRI Circuits 
(2B + 1D channel each)Other Stations & 
Lines Combined 
(see Guidelines 4 & 5)
14 8
12 16
10 24
832
640
448
256
064 
						

							Strata DK424i
ISDN BRI CIrcuit Capacity Guidelines
28Strata DK General Description    6/00
Table 21 B2CAU/B2CBU Maximum ISDN BRI Configuration
B2CAU/B2CBU
2-Cabinets
14-Universal Slots
104-Stations Max.
120-CO Lines Max.
128-Stations + Lines Max.
BRI Circuits 
(2B + 1D channel each)Other Stations & Lines 
Combined (see Guidelines 
4 & 5 on Page 27)
30 8
26 24
22 40
18 56
14 72
10 88
6 104
2 120
0 128
Table 22 B3CAU/B3CBU Maximum ISDN BRI Configuration
B3CAU/B3CBU
3-Cabinets
28-Universal Slots
192-Stations Max.
120-CO Lines Max.
248-Stations + Lines Max.
BRI Circuits 
(2B + 1D channel each)Other Stations & Lines 
Combined (see Guidelines 
4 & 5 on Page 27)
48 56
44 72
40 88
36 104
32 120
28 136
24 152
20 168
16 184
12 200
8 216
4 232
0 248 
						

							Strata DK424i
ISDN BRI CIrcuit Capacity Guidelines
Strata DK General Description    6/0029
Table 23 B5CAU/B5CBU Maximum ISDN BRI Configuration
B5CAU/B5CBU
5-Cabinets 
48-Universal Slots
336-Stations max.
200-CO Lines max.
432-Stations + Lines Max.
BRI Circuits 
(2B + 1D channel each)Other Stations & Lines 
Combined (see Guidelines 
4 & 5 on Page 27)
72 144
68 160
64 176
60 192
56 208
52 224
48 240
44 256
40 272
36 288
32 304
28 320
24 336
20 352
16 368
12 384
8 400
4 416
0 432 
						

							Strata DK424i
Remote Expansion Cabinet Unit
30Strata DK General Description    6/00
Remote Expansion Cabinet Unit
The RRCU PCB enables a DK424i Expansion Cabinet to be located up to three kilometers from its 
Base Cabinet. One RRCU connects to up to two ribbon-type Data Cables and applies the inter-
cabinet signal to a fiber-optic pair. One fiber pair can support one or two expansion cabinets in one 
remote location using one RRCU in the Base Cabinet and another in the Remote Expansion 
Cabinet.
A DK424i Base Cabinet will support up to four RRCU PCBs. A DK424i will support up to four  
Remote Expansion Cabinets.
Remote cabinets support all line and trunk interfaces. Network clock signals can only be derived 
from digital trunks installed in the Base Cabinet (Master) location.
One BDCL cable set is required for each RRCU (master and slave) except for the daisy chain 
configuration where only one BDCL cable set is required at the intermediate site.
Power Considerations
Each DK424i Base and Expansion Cabinet houses a power supply that furnishes power to all of 
the stations and some of the peripherals that interface with the cabinet (see Ta b l e  2 4).
Reserve Power
Two or four customer-supplied 12VDC reserve batteries can be connected to the system to 
maintain normal operation during a power failure (see Tables 26 and 27). The batteries are kept in 
a highly-charged state by the standard power supply and must be connected when the system is 
operating normally. Fully charged batteries must be connected when normal AC power is 
available, batteries cannot be connected after/during an actual power failure.
Table 24 DK424i Electrical Characteristics 
DK424i Primary AC Power Voltage
Input Voltage
AC Frequency
Watts per cabinet (continuous)
Watts for five cabinet system11 5 VA C
±10V or 208VAC±20V or 
240VAC
±20V
50/60 Hz, Single-phase
180
900
DK424i Primary Power Current  Consumption  (Rating in Amperes)
120VAC 208VAC 240VAC
1 cabinet
2 cabinets
3 cabinets
4 cabinets
5 cabinets3.2 amps.
6.4 amps.
9.6 amps.
12.8 amps.
16.0 amps.2.2 amps.
4.4 amps.
6.6 amps.
8.8 amps.
11.0 amps.2.0 amps.
4.0 amps.
6.0 amps.
8.0 amps.
10.0 amps.
Power Supply Unit (BPSU672)
DC voltage output specification-24VDC (-26.3~-27.8VDC, 6.0 DC amps. )
+5VDC (+4.5~5.5VDC, 4.0 DC amps.)
-5VDC (-4.5~-5.5VDC, 0.8 DC amps.) 
						

							Strata DK424i
Primary/Reserve Power Cabinet Hardware
Strata DK General Description    6/0031
Table 26 Typical Reserve Power Duration Estimates (in hours)
Primary/Reserve Power Cabinet Hardware
The lightweight and compact design enables easy wall or floor mounting. The BFIF hardware kit 
is needed for floor mounting (see Ta b l e  2 7). If floor mounting three or more cabinets, AC and 
reserve power must be connected to the BCCB conduit connection box option by a licensed 
electrician. If more than two cabinets require reserve power batteries, the BBDB must be installed. 
Wall mounting the system does not require special hardware.
Underwriters’ Laboratory (UL) and local electrical codes require certain standards for connecting 
commercial AC and reserve power to the Strata DK424i system.Ta b l e  2 7 describes which 
assemblies may be required to meet UL and local electrical code standards.
Table 25 Reserve Power Characteristics
Battery Charger Characteristics
Charger: current limiting
Nominal float voltage: 2.275 volts/cell
Charge current: 0.7 amps. maximum
Battery discharge cut-off voltage: 20.5  
±0.5VDCMaximum Battery Consumption:
-24VDC
1 cabinet
2 cabinets
3 cabinets
4 cabinets
5 cabinets6.0 amps.
12.0 amps.
18.0 amps.
24.0 amps.
30.0 amps.
Number of Cabinets12345
Estimated operation time 
Two-battery configuration12.0 hr. 6.0 hr. 4.0 hr. 3.0 hr. 2.5 hr.
Estimated operation time 
Four-battery configuration24.0 hr. 12.0 hr. 8.0 hr. 6.0 hr. 5.0 hr.
DC Current Drain (-24VDC) 4.6 amps. 8.7 amps. 12.8 amps. 16.9 amps. 21.0 amps. 
						

							Strata DK424i
Primary/Reserve Power Cabinet Hardware
32Strata DK General Description    6/00
Table 27 Power Cabinet Hardware 
OptionDescription
BPSU672DK424i cabinet power supply. This power supply can operate with 120VAC, 208VAC, or 240VAC 
connected as the system’s primary AC power source.  It automatically detects and adjusts to the 
type of primary AC power that is connected. The power supply is included with each cabinet 
ordered but must be installed in the field. 
Standard 9 ft. AC
 power cords for AC120VAC/15A are provided with DK424i Base or Expansion 
cabinets.  When AC208V or AC240V power is used, a special AC cord, BACL240, is required for 
each cabinet power supply and must be ordered separately.
RPSB2Cabinet power strip for 120VAC primary power – provides three standard 120VAC/15A outlets 
(NEMA 1-15R) and nine ft. AC power cord with standard 120VAC/15A plug (NEMA1-15P). This 
unit is field installed inside system cabinet side panels.
One RPSB2 is required for two or three cabinet systems if the local electric code allows only one 
AC power cord to be connected to the system. 
NoteIf the local electric code allows only one AC power cord to be connected to the system, 
208VAC or 240VAC must be used as primary AC power for systems with four or more 
cabinets. 
One RPSB2 is required for a three or four cabinet system if the local electric code allows two AC 
power cords connected to the system.
Two RPSB2s are required for a five cabinet system if the local electric code allows two AC power 
cords connected to the system.
BPSB240Cabinet power strip for 208VAC or 240VAC primary power. Provides three 240VAC/20A outlets  
(NEMA 6-20R) and 9ft. AC power cord with a standard 240VAC/20A plug (NEMA 6-20P). This 
unit is field installed inside system cabinet side panels.
One BPSB240 is required for two or three cabinet systems. 
Two BPSB240s are required for four or five cabinet systems.
Notes

Local electric codes allow only one AC power cord to be connected to the system when 
using 208VAC or 240VAC as the primary AC power. 

If using 208VAC as primary power, the plug on the BPSB240 AC power cord (NEMA 
6-20P) may have to be changed by a certified electrician depending on local electric 
codes. 
BACL240AAC208V or AC240VAC nine ft. power supply cord. This cord must be used when the system is 
powered by 208VAC or 240VAC. One cord is required for each cabinet power supply and must be 
ordered separately only if using 208VAC or 240VAC as the system primary AC power.
NoteThe cord is equipped with a 250VAC/20A plug (NEMA 6-20P) which is standard for 
240VAC. If using 208VAC as the system primary power this cord may not exit the 
cabinet, a BPSB240 power strip is required and the power strip plug may have to be 
changed by a certified electrician depending on local electric codes.
PBTC-3M A three-meter battery cable used to connect reserve power batteries to the system power supply 
when the system has less than three cabinets. One reserve power cable is required for each 
cabinet in a one or two cabinet system (wall or floor mount). The cable connects the DK424i 
cabinet power supply directly to the battery terminals (a BBDB is not required).
BBDBDK424i reserve power battery distribution box is required when connecting reserve power 
batteries to three or more cabinets (wall or floor mount). The box is field installed into one of the 
DK424i cabinet side panels.
The BBDB provides 7 BBTC2A-2.0M, battery distribution cables to connect reserve power from 
the BDDB box to each individual cabinet power supply.
One or two BBTC1A-2.0M must be ordered separately when using the BBDB battery distribution 
box. 
						

							Strata DK424i
Primary/Reserve Power Cabinet Hardware
Strata DK General Description    6/0033
BBTC1A-2.0MA two-meter battery cable used to connect reserve power batteries to the BBDB battery 
distribution box. One reserve power cable is required in a three or four cabinet system and two 
cables are required for five cabinet systems (wall or floor mount). The cable connects DK424i 
BBDB box directly to the battery terminals.
BCCB120 or 
BCCB240DK424i conduit connection box is installed in the bottom cabinet, side panel. It is used to hardwire 
Primary AC power and reserve battery power connections through conduit. These boxes are 
required by UL for three or more floor mounted cabinets. Conduit boxes are not required for wall 
mounted systems with any number of cabinets or floor mounted system with one or two cabinets. 
They can be used as an option on any system. 
The BCCB120 is required when connecting AC120VAC as the primary power source and the 
BCCB240 is required when connecting AC208VAC or AC240VAC as the primary power source. 
BCCB conduit boxes must be field installed by a certified electrician.
BFIFFloor mount fixture kit is required when floor mounting DK424i cabinets.
Provides two metal stands for mounting any number of DK424i cabinets on the floor. Three pairs 
or wall brackets (RWBF) are supplied with BFIF to use when mounting three or more DK424i 
cabinets on floor. The wall brackets are needed to secure floor-mounted systems to the wall for 
safety purposes. Table 27 Power Cabinet Hardware (continued)
OptionDescription 
						

							Strata DK424i
DK424 and DK424i Hardware Compatibility
34Strata DK General Description    6/00
DK424 and DK424i Hardware Compatibility
The following tables shows the PCB compatibility for the DK424 and D424i systems.
CategoryUnit NameDK424DK424i
Processor CardRCTU cards for DK424 X NC
B_C_U cards for DK424i NC X
DTMF Receiver UnitRRCS-4/8/12 X NC
BRCS-4/8/12 NC X
Optional Interface Unit
RSIUXX
PIOUXX
RSSU X X
PIOUS X X
Te r m i n a l
EKT2000 X X
EKT6000 X X
EKT6500 X X
HDSS X X
Existing Proprietary Attendant Console X X
DK424 PC Attendant X X
RPCI (RS-232C) - Data X X
RPCI (RS-232C) - TAPI X X
DKT1000 X X
DKT2000 X X
Base CabinetDKSUB424A X NC
CHSUB672A NC X
Expansion Cabinet
DKSUE 424A X NC
CHSUE672A NC X
Data Cable for Expansion Cabinet DK424 X NC
Data Cable for Expansion Cabinet DK424i NC X
Power Supply UnitRPSU424A1 X NC
BPSU672A (120VAC/208VAC/240VAC power supply) NC X
Conduit Connection Box
RCCB2A1 X NC
BCCB120A (120V box)  NC X
BCCB240A (240V box) NC X
Battery Distribution BoxRBDB2A X NC
BBDB1A (new Battery Distribution Box, seven BBTC2A-2.0M)  NC X
Power Strip
RPSB1A1 X NC
RPSB2A (current 120VAC power strip) X X
BPSB240A (new 240VAC power strip) NC X
Battery CablePBTC-3M X X
BBTC1A-2.0M NC X
X = Compatible
NC = Not Compatible