69Figure 74 MIM-8E1 (75-ohm) panelFigure 75 MIM-8E1-F (75-ohm) panelTable 94 LED descriptionLED DescriptionLINK • Off: The link is not set up.• On: The link has been set up.ACT • Off: No data is being transmitted or received;• Flashing: Data is being received or/and transmitted.Interface cables and the connection methodsFor more information about E1 interface cables and the connection methods, see "E1 interface."MIM-1T1/MIM-2T1/MIM-4T1/MIM-1T1-F/MIM-2T1-F/MIM-4T1-FIntroduction• MIM-1T1/MIM-2T1/MIM-4T1 moduleThe 1/2/4-port channelized CT1/PRI interface module (MIM-1T1/MIM-2T1/MIM-4T1) serves totransmit/receive and handle T1 data streams, provide CT1 access, and fulfill the function ofISDN PRI. Thereby, one module can be used for multiple purposes.• MIM-1T1-F/MIM-2T1-F/MIM-4T1-FThe 1/2/4-port fractional T1 interface module (MIM-1/2/4T1-F) and MIM-1/2/4T1 module aredifferent in the sense that:{ FT1 operating mode supported by T1-F modules allows only one bundle. In other words, thetime slots can only be bundled into one n x 64 kbps or 56 kbps channel, where n=1-24.However, a CT1 module allows of arbitrary grouping of the 24 channels.{ T1-F does not support PRI mode.NOTE:For a MIM-1T1 module, the system automatically creates a serial interface for each timeslot bundleformed on a controller T1 interface.
