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PA-4T+ Port Adapter Cable Pinouts
X.21 Connections
The router end of all X.21 adapter cables is a high-density 60-pin plug. The network end of the
adapter cable is a standard DB-15 connector. Figure 1-7 shows the connectors at the network end of
the X.21 adapter cable. X.21 cables are available as either DTE (DB-15 plug) or DCE (DB-15
receptacle).
Figure 1-7 X.21 Adapter Cable Connectors
EIA-530 Connections
The EIA-530 adapter cable is available in DTE mode only. The router end of the EIA-530 adapter
cable is a high-density 60-pin plug. The network end of the adapter cable is a standard DB-25 plug
commonly used for EIA/TIA-232 connections. Figure 1-8 shows the DB-25 connector at the
network end of the adapter cable.
Figure 1-8 EIA-530 Adapter Cable Connector
PA-4T+ Port Adapter Cable Pinouts
The PA-4T+ supports EIA/TIA-232, EIA/TIA-449, X.21, V.35, and EIA-530 serial interfaces. All
PA-4T+ ports use a a 60-pin receptacle that supports all available interface types. A special serial
adapter cable determines the electrical interface type and mode of the interface. The router end of all
of theadapter cables hasa 60-pin plug; theconnectors at thenetwork endare the standardconnectors
used for the respective interfaces. All interface types except EIA-530 are available in DTE or DCE
format: DTE with a plug at the network end and DCE with a receptacle at the network end. V.35 is
available in either mode with either gender at the network end. EIA-530 is available in DTE only.
The tables that follow list the signal pinouts for both the DTE and DCE mode serial port adapter
cables, for each of the following PA-4T+ interface types:
• EIA/TIA-232 pinouts, Table 1-2
• EIA/TIA-449 pinouts, Table 1-4
• EIA-530 pinouts, Table 1-5
• V.35 pinouts, Table 1-6
• X.21 pinouts, Table 1-7
1
8
15
9
DCE
DTE
H1346a
DTE
H1615a