3Com Router 5000 and Router 6000 v2.41Module GuideChapter 3Multifunctional Interface Modules (Router 5000)3-44Step 1: On Router 4-Port ISDN-S/T MIM, choose the port for connection;Step 2: Confirm the type of ISDN line provided by the telecom carrier;Step 3: Connect the cable:z If the line is an ISDN U line, adapt it using an NT1 adapter by plugging one end ofthe S/T interface cable to the S/T port of the NT1 adapter and the other end to theBRI port on Router 4-Port ISDN-S/T MIM;z If the line is an ISDN BRI S/T interface line, directly connect the cable to the BRIport on Router 4-Port ISDN-S/T MIM;Step 4: Power on the Router, and check the LEDs of the corresponding slot on thefront panel: ON means that Router 4-Port ISDN-S/T MIM is operating normally andOFF means that the POST of Router 4-Port ISDN-S/T MIM has failed. In the lattercase, please contact your agent.3.10 Router 2-Port CT1/PRI MIM3.10.1 IntroductionI. Router 2-Port CT1/PRI MIMmodule1/2/4-port channelized T1/PRI interface module serves to transmit/receive and handleT1 data streams, provide CT1 access, and fulfill the function of ISDN PRI. Thereby,one card can be used for multiple purposes.II.1/2/4-port fractional T1 interface module and module are different in the sense that:z FT1 operating mode supported by T1-F modules allows only one bundle. In otherwords, the time slots can only be bundled into one nx64 kbps or 56 kbps channel,where n=1-24. However, a CT1 module allows of arbitrary grouping of the 24channels;z T1-F does not support PRI mode.3.10.2 Interface AttributesThe interface attributes of Router 2-Port CT1/PRI MIM modules are given in thefollowing table:Table 3-26 Interface attributes of Router 2-Port CT1/PRI MIM and modulesAttribute DescriptionConnector RJ-45Number of connectors 2
