ISDN Interfaces
RBSU/RBSS Interface Units
5-16
Strata CTX I&M 10/02
Step 6:
Install RBSU/RBSS PCBs into Cabinet
After setting the switches and jumpers and installing the plug-on PCBs as described in the
preceding paragraphs, the RBSU/RBSS PCBs can be installed in the appropriate cabinet slots.
Refer to RBSU/RBSS Capacity and Cabinet Slot Information on
Figure 5-13
. After the RBSU/
RBSS is installed in the Strata CTX cabinet, the status LEDs and connecting jacks are positioned
as shown in
Figure 5-12
.
Table 5-5
RBSU/RBSS LED Indications
Modular Jack Pin Configurations
BRI (S/T) Circuit Jack (TE or NT Mode)
The TBSU and RBSU/RBSS BRI circuit jack is a shielded RJ45 (8-pin modular) with Transmit
(Tx) and Receive (Rx) pin numbers as shown in
Figure 5-12
. The Tx and Rx pin numbers change
when the BRI circuit is configured with TBSU and RBSU/RBSS option switches for TE or NT
(
Tables 5-4
and
5-12
). If the R40S is installed on the RBSU, the PS-1 voltage is carried on the Tx/
Rx wires with polarity. (See
Table 5-6
).
The position of the TBSU BRI and RBSU/RBSS circuit jacks are shown in
Figure 5-13
and
5-12
respectively.
LED
Indication
BSY
Circuit Busy
On – Any B-channel is in use.
Off – B-channels are idle.
TS
Timing Source
Blinking On/Off – The RBSU is extracting the clock from the BRI line and is the
Primary synchronization circuit for ISDN and T1.
On – The RBSU is the secondary (backup) synchronization circuit for the ISDN
and T1.
Off – The RBSU is not used for ISDN or T1 synchronization.
LOS
Loss of Signal
On – Clock timing cannot be detected from the line.
Off – Normal condition.
FS
Frame Alignment Alarm
On – Frame alignment cannot be established.
Off – Frame alignment is established.
Table 5-6
RJ45 Pins in the 8-pin Modular Jack
Pin
No.
TE
Side
NT
Side
PS1/R40S
Polarity
1
N/C
N/C
N/C
2
N/C
N/C
N/C
3
Tx
Rx
+
4
Rx
Tx
+
5
Rx
Tx
-
6
Tx
Rx
-
7
N/C
N/C
N/C
8
N/C
N/C
N/C
87654321
3048
Front View of RJ-45 Jack Cavity
Note: The RJ-45 pins are numbered as shown above.
Содержание Strata CTX100
Страница 16: ...Introduction Related Documents Media xii Strata CTX I M 10 02 ...
Страница 94: ...Strata CTX100 Installation Installing the CTX100 Cabinet 2 24 Strata CTX I M 10 02 ...
Страница 150: ...Strata CTX670 Installation Remote Expansion Cabinet Unit 3 56 Strata CTX I M 10 02 ...
Страница 188: ...PCB Installation Network Requirements 4 38 Strata CTX I M 10 02 ...
Страница 238: ...T1 Loop Back Testing 6 12 Strata CTX I M 10 02 ...
Страница 310: ...Station Apparatus 2000 series Telephones 8 48 Strata CTX I M 10 02 ...
Страница 342: ...Peripheral Installation Station Message Detail Recording SMDR 9 32 Strata CTX I M 10 02 ...