Cabletron Systems MicroMMAC 24T MICROMMAC- - Manual (Page 29)

REQUIREMENTS/SPECIFICATIONS
2-10
Local Management
Both COM 1 and COM 2 ports are factory-configured to support Local
Management access by an actual or emulated Digital Equipment
Corporation VT 100™ terminal.
Booting/Diagnostics
Terminal display of POWER UP booting/diagnostic tests available only
when terminal is connected to COM 2 (for information about Boot
sequences, see Section 5.3 ).
UPS
COM 2 supports Uninterruptible Power Supply (American Power
Conversion only).
SLIP
Both COM ports support Serial Line Internet Protocol (SLIP).
Modem
Both COM ports support modem connection.
2.4 TPIM SPECIFICATIONS
TPIMs provide Ring In/Ring Out (RI/RO) connections that can extend the
network through a variety of media. Each TPIM has an embedded repeater
that re-times all data.
The LNK (Link) LED on each TPIM provides the following information:
• Green - RI or RO active
• Red (TPIM-T1/T2/T4 only) - No Link (Autowrapped)
• Off - No Link (Wrapped or Disabled)
TPIM-T1
TPIM-T1 provides a female DB9 connector that supports STP cabling.
Figure 2-3 shows TPIM-T1 pinouts for Ring Out and Ring In applications.