Cabletron Systems 42T, MICROMMAC-22T manual Installing Tpim Modules

INSTALLATION

2.The associated Port Status LED lights green when the station boots up. If the LED doesn’t light, perform the following steps:

a.Check that the device at the other end of the twisted pair segment has power, and that the network interface driver is initialized.

b.Verify the RJ45 connector pinouts on the twisted pair segment.

c.Check that the twisted pair connection meets the dB loss limits and cable specifications outlined in Chapter 2.

d.Check Local Management to ensure that the port is enabled.

e.If a link still can not be established, contact Cabletron Systems Technical Support.

3.9 INSTALLING TPIM MODULES

TPIMs provide specialized RI/RO ports for trunk connections. Each TPIM supports a different medium (cable type). Different TPIMs may be operated together: for example, a TPIM-T1 can provide a Ring-In port while a TPIM-T4 provides a Ring-Out port.

The following sub-sections explain how to set the Phantom and RI/RO Switches, how to install a TPIM into a MicroMMAC-T, and how to attach network segments through the TPIM.

Prior to connecting trunk cabling to the TPIMs, check the connectors for proper pinouts. Table 3-1 provides a cross-reference of pinouts for TPIMs used for Ring-In or Ring-Out applications.

Table 3-1. Pinout Cross-Reference for TPIMs

	TPIM-T2/T4	TPIM-T2/T4	TPIM-T1	TPIM-T1
Signal	(RJ45)	(RJ45)	(DB9)	(DB9)
	Ring-In	Ring-Out	Ring-In	Ring-Out
TX+	6	4	9	1
TX-	3	5	5	6

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