For Release 2 or later, one common module (circuit pack) supports all six MERLIN Messaging System configurations (that is, a 2-port, 4-port, 6-port, 8-port, 10-port, or 12-port configuration). A 2-port, 4-port, 6-port, 8-port, 10-port, or 12-port PC Card, included with each system, contains the following components:
For Release 1 and 1.1, one common module supports three configurations (that is, a 2-port, 4-port, or 6-port configuration). A 2-port, 4-port, or 6-port PC card is included with each system.