ISDN Interfaces
Strata CT I&M Manual October 2000
10-15
Table 10-6
RBSU/RBSS LED Indications
Modular Jack Pin Configurations
BRI (S/T) Circuit Jack (TE or NT Mode)
The RBSU/RBSS BRI circuit jack is a shielded RJ45 (8-pin modular) with Transmit (Tx) and
Receive (Rx) pin numbers as shown in
. The Tx and Rx pin numbers change
when the BRI circuit is configured with RBSU/RBSS option switches for TE or NT (
). If the R40S1A is installed on the RBSU, the PS-1 voltage is carried on the Tx/Rx wires
with polarity. (See
The position of the BRI and RBSU/RBSS circuit jacks are shown in
LED
Indication
BSY
Circuit Busy
On – Either 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 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.
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 10-7
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 RJ45 Jack Cavity
Note:
The RJ45 pins are numbered
as shown above.
H
C
Summary of Contents for Strata CT
Page 36: ...Strata CT Configuration 1 22 Strata CT I M Manual October 2000 H C ...
Page 94: ...Strata CT Installation 2 58 Strata CT I M Manual October 2000 H C ...
Page 242: ...Peripheral Installation 6 54 Strata CT I M Manual October 2000 H C ...
Page 258: ...ACD Installation 7 16 Strata CT I M Manual October 2000 H C ...
Page 274: ...Fault Finding 8 16 Strata CT I M Manual October 2000 H C ...
Page 364: ...ISDN Interfaces 10 38 Strata CT I M Manual October 2000 H C ...
Page 370: ...Notes to Users A 6 Strata CT I M Manual October 2000 H C ...