Mitel SX-2000 - Manual (Page 20)

SX-200 General Information Guide
6 Revision A 50003510
The six peripheral bays can be SX-200 peripheral cabinets, SX-200 LIGHT peripheral cabinets,
SX-200 IP Nodes (requires the MCC IIIELx), SPINE bays, or ISDN bays (A SPINE bay
configured as bay 7 requires the MCC IIIELx). The ISDN bay may be an ISDN Network Gateway
or a PRI card.The PRI card fits into a main control cabinet or a peripheral cabinet.