-12 TIF cards in 4RU of space -Auto or Manual Answer -Call in Directly to a Party Line or IFB -Callers can be Locked to One Matrix Point -Redundant Power Supplies Standard The TIF-4000 is a MULTI-LINE TELEPHONE INTERFACE that has 12 TIF cards in 4RU of space . . .

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-12 TIF cards in 4RU of space
-Auto or Manual Answer
-Call in Directly to a Party Line or IFB
-Callers can be Locked to One Matrix Point
-Redundant Power Supplies Standard

The TIF-4000 is a MULTI-LINE TELEPHONE INTERFACE that has 12 TIF cards in 4RU of space

Read Less