Sagem SAGEM-LINK F - IDU Description

SAGEM-LINK F 288055571-04
Installation and Operation Manual
Page 111/142
Issue 04 : July 2005
Reproduction and communication prohibited without the written permission of Sagem Communication
IDU
ODU
ODU
C
O
U
P
L
E
R
Main
Standby
Cable Interface
Module
(Main)
Cable Interface
Module
(Standby)
Tx Data
Rx Hitless
Switch
Rx Data
Tx D
Tx D
Rx M
Rx S
Main
Standby
Mux
Demux
Tributaries
Aux
Channels
E1 /100baseT
Aux, EOW
DC In (-48V)
DC Out (5V)
DC Out (5V)
DC In (-48V)
SNMP
Interface
Eth & Serial Ports
PC
LCT
Figure 5.5 – SAGEM-LINK F 1+1 Block Diagram (1+1)
5.4 – IDU Description
The IDU, which is frequency independent, consist of a 19 inches rack, including :
• All user interface access (tributaries, auxiliary channels, relays and dry loops, EOW, SNMP
management ports, PC serial port)
• A Microprocessor controlling the whole system, and communicating with the ODU, the remote
IDU, the SNMP agent, and the SAGEM-LINK F Pilot software.
• A flexible E1 multiplexer / demultiplexer (2 E1, 4 E1, 8 E1, 16 E1)
• A wayside traffic multiplexer including :
- Two Auxiliary channels (AUX1 and AUX2) : 9600 bauds with V11 / V28 interfaces
(controlled by software).
- One Auxiliary channel (AUX3) : 64 kbit/s with V11 interface, that can be configured in
either co-directional or contra-directional mode
- One point to point audio Engineer Order Wire (EOW)
• Optional Ethernet 100 base T interface. When this option is present, the IDU may configured
with E1 interface only, with Ethernet interface only, or with a combination of E1 and Ethernet. All
configurations are controlled by software.
• A network management interface compliant with SNMP protocol. The NMI interface has three
Ethernet 10 BaseT ports (internal hub), two serial ports (MGMT1 and MGMT2), and TSL2
interface to dialog with the remote NMI interface via an internal auxiliary radio data channel.
Once the user has configured the IP addresses and the routes, the NMI card acts as a router for
management traffic.
• In addition, there are 5 internal alarm relays, and 4 Inputs / Outputs dry loops.
The IDU can contain one or two cable interface modules depending on the system configuration.
These modules are plugged into the IDU rack.
Refer to chapter1 for access interfaces details.