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Step 4
Step 5
Connecting a Modem
Two modems can be connected to the IGX node to provide access for remote troubleshooting and
for remote alarm logging. (See Figure 3-21.) Each connection between the SCM and a modem
requires a special cable and setup procedure.
The modem that provides access for remote troubleshooting from the Cisco TAC office
(TAC-to-IGX modem) connects to the Control Terminal port on the SCM. Typically, the modem
connects to the telephone wall jack with a direct-dial line. You can reach the TAC through Cisco
Customer Engineering.
The modem that is used to provide remote alarm logging (IGX-to-TAC modem) is connected to the
AUX port on the SCM. This modem connects to a wall jack using a standard telephone line.
Figure 3-21
Auto-answer
modem
Auto-dial
modem
Tighten the EIA/TIA-232/V.24 connector screws to firmly attach the cable connector to
the AUX port connector.
Plug the printer power cord into the appropriate wall receptacle.
Connecting Modems to an IGX Node
SCM
External
clock
(DB-15)
Control
RS-232
terminal
(DB-25)
Auxiliary
port
(DB-25)
RS-232
LAN AUI
(DB-15)
PSM
Fail (red)
Active (green)
Attaching Peripherals
Card Installation and Node Startup 3-45
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