E1 Interface Module; Configuring E1 Interface Module - SAF CFM-34-REBM Manual

3.2

E1 Interface Module

The E1 interface module is a single port module provided with two types of
interfaces:
• 120 Ω balanced interface, accessible through RJ-45 type connector,
• 75 Ω unbalanced interface, requires a pair of coaxial cables with the BNC type
connector.
Both interfaces are provided for termination of 2 Mbps (G.703) streams.
Table 5. E1 Interface module connectors
Out, Two BNC connectors provide means to connect the CPE equipment to the IDU;
In Tx data stream is transmitted over OUT (output) port;
Rx data is to be received through IN (input) port.
RJ-45 RJ-45 connector for balanced E1 interface.
Table 6. E1 interface module LEDs
Label Color
Tx Green Steady green light indicates the E1 module is ready to transmit data
to CPE connected to E1 port.
In case if Multiplexer synchronization is lost (S.L. LED is lit), Tx LED
goes off and AIS signal is transmitted from E1 port to CPE.
Rx Green Steady green light indicates the data signal from E1 input.
AIS Red Steady red LED indicates the AIS signal from E1 input.
LB Red "LoopBack" LED (red) indicates loopback mode is activated in the
module.

3.2.1 Configuring E1 Interface Module

The switching between
LCD/Keypad, Telnet, ASCII and Web terminals:
• From Telnet or ASCII console it can be accomplished using "Mod # setE1
{120|75}" command line, see Chapter 4.4.3.
• From IDU LCD: Press "ENTER" to enter setup mode → select "Modules" → select
"Module # E1" → select "E1 Interface" → "Ch. Interface", choose the interface
and confirm as prompted.
Modular Fast Ethernet Bridge Management System Technical Description and Configuration Guide
balanced/unbalanced
V. 3.12. 1.0 · © SAF Tehnika A/S 2003
Description
interfaces is available from
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