Cabletron Systems MICROMMAC-22T User Manual

Page of 105
INSTALLATION
3-13
3.9.1  Setting Phantom and RI/RO Switches
The Phantom Switch (shown in Figure 3-13) enables the port to 
“autowrap” if a trunk cable fails or is removed. The Phantom Switch 
should be set to the appropriate setting before TPIM installation. When 
attaching a Cabletron hub to the TPIM, leave the switch at the factory 
default setting of 1. When attaching a non-Cabletron device to the TPIM, 
such as an IBM 8228 MAU, use the 0 setting.
Ensure that the Ring-In/Ring-Out Switch is in the factory default RI/RO 
position. The MicroMMAC-T does not support the Station (S) setting.
NOTE: If the switch locations on the TPIM do not match the locations 
illustrated in Figure 3-13, r
efer to the TPIM Reference Card included with 
the TPIM. The TPIM Reference Card outlines switch locations and 
settings. For additional help, call Cabletron Systems Technical Support.
RX+
4
6
1
9
RX-
5
3
6
5
Table 3-1.   Pinout Cross-Reference for TPIMs  (Cont.)
Signal
TPIM-T2/T4
(RJ45)
Ring-In
TPIM-T2/T4
(RJ45)
Ring-Out
TPIM-T1
(DB9)
Ring-In
TPIM-T1
(DB9)
Ring-Out