Data Flow - Avaya Nortel Communication Server 1000 Reference

Figure 90: MSDL functional block diagram

Data flow

The MSDL transmit interface, managed by the MSDL handler, sends data from the system to
the MSDL. This interface receives packetized data from the system and stores it in the transmit
buffer on the MSDL. The transmit buffer transports these messages to the appropriate buffers,
from which the messages travel over the MSDL port to the I/O equipment.
The MSDL uses the MSDL receive interface to communicate with the system. The MSDL card
receives packetized data from the I/O equipment over the MSDL ports. This data is processed
by the MSDL handler and sent to the appropriate function.
Circuit Card Reference
Functional description
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