Modular Jack Pin Configurations - Toshiba strata CT Installation & Maintenance Manual

Table 10-6
LED
BSY
TS
LOS
FS

Modular Jack Pin Configurations

H
BRI (S/T) Circuit Jack (TE or NT Mode)
C
Table 10-7
Pin No.
1
2
3
4
5
6
7
8
Strata CT I&M Manual October 2000
RBSU/RBSS LED Indications
Circuit Busy
On – Either B-channel is in use.
Off – B-channels are idle.
Timing Source
Blinking On/Off – The RBSU is extracting the clock from the BRI line and is the
Primary synchronisation circuit for ISDN.
On – The RBSU is the secondary (backup) synchronisation circuit for the ISDN.
Off – The RBSU is not used for ISDN or T1 synchronisation.
Loss of Signal
On – Clock timing cannot be detected from the line.
Off – Normal condition.
Frame Alignment Alarm
On – Frame alignment cannot be established.
Off – Frame alignment is established.
The RBSU/RBSS BRI circuit jack is a shielded RJ45 (8-pin modular) with Transmit (Tx) and
Receive (Rx) pin numbers as shown in
when the BRI circuit is configured with RBSU/RBSS option switches for TE or NT
10-5). If the R40S1A is installed on the RBSU, the PS-1 voltage is carried on the Tx/Rx wires
with polarity. (See Table
The position of the BRI and RBSU/RBSS circuit jacks are shown in
RJ45 Pins in the 8-pin Modular Jack
TE Side NT Side
N/C N/C
N/C N/C
Tx Rx
Rx Tx
Rx Tx
Tx Rx
N/C N/C
N/C N/C
Indication
Figure 10-9. The Tx and Rx pin numbers change
10-7).
PS1/R40S
Polarity
N/C
N/C
+
+
-
-
N/C
N/C
Figure 10-10
87654321
Front View of RJ45 Jack Cavity
Note: The RJ45 pins are numbered
as shown above.
ISDN Interfaces
(Table
3048
10-15