Strata Dk Isdn Reference Model; System Capacity Of Isdn Circuits - Toshiba STRATA DK14 Installation And Maintenance Manual

Strata DK ISDN Reference Model

A block diagram of the DK ISDN PCBs and reference points is provided in
R
SLT
DKT
EKT
S
TE-1-S
(Voice or Data)
R
TA-S
SLT
PC
U
TE-1-U
(Voice or Data)
R
SLT TA-U
PC
R, T, S, and U are ISDN standard reference points
4695
TE-1 = Terminal Equipment, Type 1
TA = Terminal Adapter
Customer Premises Equipment
Figure 16-1 ISDN Reference Model

System Capacity of ISDN Circuits

The capacities of ISDN lines and stations for all DK systems are shown in
Table 16-1 Maximum Number of RPTU PCBs, Lines
DK40i
RCTU
RCTUBA3/BB4
RCTUC3/D4
RCTUE3/F4
B1CAU
B2CAU/BU, B3CAU/BU
B5CAU/BU
Strata DK I&M 6/00
DK40i, DK424, DK424i (NT2)
RSTU
RBUU/RBSU
TBUU (NT-1)
PDKU
T
RBSU
PEKU
TBUS (TE)
CSU
RPTU (TE)
RBSU/RBSU
(NT1)
TBUS (NT)
(P-MP)
Dealer-
supplied
CSU and NT1
RBUU/RBUS
TBUU (LT)
(P-P)
P-P = Point-to-Point
P-MP = Point-to Multipoint (passive bus)
Processor Max. PCBs
Demarcation Point
U
BRI
RJ48C Loop
Termination
8-wire
Loop
BRI
RJ48C
NT1
Termination
8-wire
PRI
RJ48C
Office
8-wire
Channel
Unit
Telco-
supplied
Jacks
Office Channel Unit, or OCR, is
the CO Channel Service Unit
Public Switched Telephone Network
(PSTN)
Max. B
Channels
(Lines)
1 12
1 16
2 47
6 141
8 188
2 32
6 120
8 188
ISDN Interfaces
BRI U Overview
Figure 16-1.
ISDN
SWITCH
Table 16-1.
16-3