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PA-4T Synchronous Serial Port Adapter Installation and Configuration
OL-3560-02
Chapter 1 Overview
Cables, Connectors, and Pinouts
X.21 Connections
The router (VIP) end of all X.21 adapter cables is a high-density 60-pin plug. The opposite (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 (VIP) end of the EIA-530 adapter
cable is a high-density 60-pin plug. The opposite (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
4T Port Adapter Cable Pinouts
The 4T port adapter supports EIA/TIA-232, EIA/TIA-449, X.21, V.35, and EIA-530 serial interfaces.
All 4T ports use a a 60-pin receptacle that supports all available interface types. A special serial adapter
cable, which is required for each port, determines the electrical interface type and mode of the interface.
The router (VIP) end of all of the adapter cables is a 60-pin plug; the connectors at the network end are
the standard connectors used for the respective interfaces.
All interface types except EIA-530 are available in DTE or DCE format: DTE with a plug connector 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 4T port adapter interface types:
• EIA/TIA-232 pinouts, Table 1-3
• 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