Mxc Functionality; Figure 3-2: Xdm-100 Cross-Connect Scheme - Eci Telecom XDM-100 General Description Manual

XDM® -100

3.4 MXC Functionality

The XDM-100 Main Cross-Connect and Control (MXC) card performs all the
XDM-100 cross-connect, timing, multiplexing and power functions, including:
Multiplexer control and traffic processing. The processor controls all
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multiplexer functions.
Input power filtering (INF) and DC/DC conversion. Each card accepts two
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power input sources, which are EMC filtered, and creates the operating
voltages.
SDH/SONET traffic cross-connection (via a 192x192 STM-1/OC-3 switch).
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The switch handles aggregate and tributary interface traffic. The actual used
capacity is 128 x 128 STM-1/OC-3 equivalents.
Multiplexer timing unit. A full featured XDM TMU.
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DCC routing and handling of 32 DCC channels.
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Each MXC card also has a nonvolatile flash memory (NVM).
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For reliability purposes, a redundant pair of main cross-connect control cards
(MXC-A and MXC-B) may be configured, with A being the active card and B the
protection card.
1
128 STM-1 equivalents
In the redundant configuration, MXC-A and MXC-B cards operate in parallel. Each
XDM-100 matrix permits full nonblocking connectivity at all VC or STS levels. The
matrices are connected to all I/O modules, providing 1.25 Gbps capacity to each of
them.
The XDM-100 provides several types of cross-connects in compliance with
applicable ITU-T and Telcordia standards. These include broadband, wideband, and
integrated broadband/wideband cross-connects.
The XDM-100 also supports a non-redundant configuration, which activates a single
matrix and a bridge card (MXC-BR). In this configuration, the protection trails are
routed via the MXC-BR, which replaces the MXC-B, to additional parts of the
single matrix. The MXC-BR bridges traffic from I/O modules to the dedicated
traffic buses located in the MXC-A, with a total capacity of 10 Gbps.
417006-2005-013-A02
4/4/3/1

Figure 3-2: XDM-100 cross-connect scheme

ECI Telecom Ltd. Proprietary
System Characteristics
1
128 STM-1 equivalents
3-5