Eia-530 Connections - Cisco 2600 Series Hardware Installation Manual

Chapter 2 Preparing to Install the Router
Figure 2-4

EIA-530 Connections

EIA-530, which supports balanced transmission, provides the increased functionality, speed, and
distance of EIA/TIA-449 on the smaller DB-25 connector used for EIA/TIA-232, instead of the 37-pin
connectors used for EIA/TIA-449. Like EIA/TIA-449, EIA-530 refers to the electrical specifications of
EIA/TIA-422 and EIA/TIA-423. Although the specification recommends a maximum speed of 2 Mbps,
EIA-530 is used successfully at 4 Mbps or faster over short distances.
The EIA/TIA-530 adapter cable is available in DTE mode only. The network end of the
EIA-530 adapter cable is a standard DB-25 plug commonly used for EIA/TIA-232 connections.
Figure 2-5
Figure 2-5
Figure 2-6
asynchronous/synchronous serial modules and serial WAN interface card.
OL-2171-02
X.21 Adapter Cable Connectors, Network End
8 1
15 9
shows the DB-25 connector at the network end of the adapter cable.
EIA-530 Adapter Cable Connector, Network End
shows the serial transition cables you can connect to the DB-60 port on the
DTE
DCE
DTE
Cisco 2600 Series Routers Hardware Installation Guide
Preparing to Connect to a Network
2-11