Polycom DOC2238A - Manual (Page 125)

MGC+ Hardware and Installation Manual
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• The IO-2 card connects two PRI/Leased connections from the MGC+ rear
panel to a Net-2 ISDN/T1-CAS Network Interface Module.
Figure 4-26: ISDN /T1-CAS Network connection for two spans
• The IO-4 card connects four PRI/Leased connections from the MGC+
rear panel to a Net-4 ISDN/T1-CAS Network Interface Module.
Figure 4-27: ISDN /T1-CAS Network connection for four spans