3-22 PathBuilder S24x, 26x, and 27x Switch Hardware Installation
Cabling the PathBuilder S24x, 26x, and 27x Switch
Cabling the PathBuilder S24x, 26x, and 27x Switch
Introduction This section describes the connections for:
Control Terminal Port (CTP)
I/O Interface cards
Network Manager
•LAN
An external power source
CTP Connection The CTP is set as Port 6 on the rear of the PathBuilder S24x, 26x, and 27x switch. It
is a fixed EIA 232-D DCE interface terminating on a DB-25 connector. No special
cabling is required. Typically , a stra ight- throug h DB-25 mal e to DB- 25 male cable is
required for connection to a terminal device.
I/O Interface Port
Connection Three of the I/O ports on the backplane of the PathBuilder S24x, 26 x, and 27x switch
chassis are DB-25 female connectors. One of the I/O ports is a DB-15 female
connector. You do not need additional cables if the DIM-based ports (Ports 1 and 2)
have EIA 232-D DIMs installed.
Network Manager
Connection The PathBuilder S24x, 26x, and 27x switch supports direct manager connection
using the CTP. There is a serial i nterface connec tion for the SNMP mana ger. You can
attach the control terminal to any asynchronous PAD port.
LAN Connection You can connect a PathBuilder S24x, 26x, and 27x switch to a LAN with a router.
The router can be either an external router connected to a PathBu ilder S2 4x, 26x, and
27x switch using a Frame Relay connection or a PathBuilder S200 series switch
internal router. For more LAN connection information, refe r to Appendix A,
Appendix.
Procedure Follow these steps to connect to an external power source:

Step Action Result/Description

1Verify that the 115/230 VAC Switch on
the rear panel is set for the specific
country’s requirements.
Be sure that the AC power
cord meets requirements for
the country of use.
2If you are using an AC power supply,
connect the power cord to the back of
the PathBuilder S24x, 26x, and 27x
switch enclosure and then to the
appropriate power source.
If you are using a -48VDC input power
supply, verify correct polarity with a
Vol t m et er .
The PathBuilder S24x, 26x,
and 27x switch unit automati-
cally powers on and runs self-
diagnostics.