Memotec CX950 User Manual

CX950 Hardware Reference Manual
19-4
3021M100-002
19.1.8 ATM I/O Connector Plate
Port
Connectors
The ATM I/O connector plate features two Bayonet Nut Connectors (BNCs) and
one RJ-45 connector for external connections to the network; see Figure 19-3. The
BNC connectors are used exclusively for connection to ATM E1 lines. Each E1
port is dedicated to either receive or transmit ATM traffic. The RJ-48 is used for
connection to ATM T1 lines and, optionally, for ATM E1 lines. The I/O ports ar
pre-configured through hardware to match the appropriate line impedance. See
Table 19-2 for more information.
Status-
indicating LED
A tri-coloured LED is mounted on the connector plate for indicating the status o
the ATM T1 or E1 line. The LED is under software control and can display thre
different states: off, on, and flashing. Table 19-1 lists the indications associated
with the various LED states and their applicability to either T1 or E1 ports.
Table 19-1 ATM I/O Card LED Status
T1 E1
Tri-coloured
LED State
Indication
√ √
Off
ATM T1 or ATM E1 physical line is completely
disabled.
√√
Green
ATM T1 or ATM E1 physical line is fully opera-
tional.
√
Yellow
Yellow Alarm at the ATM T1 physical line. This
condition will persist until it is cleared, at which
time the LED will change colour to reflect the
change in status.
√√
Red
Loss of Frame (LOF) or a Loss of Signal (LOS
at the ATM T1 or E1 physical line. These condi-
tions, commonly known as Red Alarm cannot
be distinguished, and will persist until the con
dition is cleared. The LED will then change
colour to reflect the change in status.
Flashing
Green
Not used.
√
Flashing
Yellow
Alarm Indication Signal (AIS) at the ATM T1
physical line. This condition, commonly known
as Blue Alarm will persist until it is cleared, at
which time the LED will change colour to reflect
the change in status.
Flashing
Red
Not used.

Memotec CX950 Specifications

General

Brand	Memotec
Model	CX950
Category	Network Hardware
Language	English