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1. OVERVIEW
DESCRIPTION
The EST-9600 is a serial server that allows multi-drop devices to use Ethernet LANs either
unencrypted or with 128-bit AES encryption. The EST-9600 connects any HDLC based synchronous
protocol serial device through a LAN and between LANs via routers. The EST-9600 is designed
specifically to support synchronous polling protocols that are HDLC based. These protocols include
SDLC, BDLC, X.25, Frame Relay, synchronous PPP protocol, etc. These protocols are often error
corrected, and the EST-9600 allows these protocols to work through routed local and wide area
networks. The EST-9600 uses UDP protocol to deliver the HDLC traffic, allowing the necessary
data connection over a local LAN and across routed networks. The EST-9600 functions
independently of the device protocol, allowing HDLC protocols to be carried with no configuration
changes.
An EST-9600 host authenticates with remote drop EST-9600s to allow serial synchronous HDLC
data connections. Remote drop EST-9600s can authenticate with both a primary host and a backup
host. This feature makes it easy to have redundant host sites that will always receive the same poll
responses as the master host site. If the objective is to have a backup host site or have a second site
that always monitors the RTU responses, the EST-9600 makes it simple and easy to accomplish.
The EST-9600 supports RS-232 serial interface speeds up to 230 Kbps, RS-530 speeds up to 2048
Kbps.
To deliver HDLC traffic via Ethernet in as close to the nature of HDLC as possible, the EST-9600
uses TCP/UDP “best-effort”, speedy delivery, rather than the delay and extra overhead that TCP/IP
error-correction and flow control could cause. Up to 20 drop EST-9600s may be used with each host
EST-9600.
The EST-9600 can be managed through its serial port, via telnet, or with a web browser. Remote
configuration is supported using TCP/IP (telnet) or any web browser. Security features of the EST-
9600 include fine-grained configuration and management controls as well as the ability to turn off
remote management functions.
Instead of replacing your existing host computers and terminals to migrate to Ethernet, add the
EST-9600 for a fraction of the cost. OEM manufacturers can design the EST-9600 into their
products or use it as an add-on method to gain Ethernet connectivity.
FEATURES
• Industrial rated -40° to +70° C
• Ethernet port: 10/100BaseT
• Encapsulates HDLC protocols over Ethernet networks
• Point-to-point or point-to-multi-point for serial synchronous polling applications
• AES 128-bit encrypted or non-encrypted payload
• UDP transport for non-interference with HDLC error correction functions
• Synchronous serial RS232 port
• Option for RS530/V.35 port
• Internal or external sync clock
• Speeds to 2.048 Mbps
• Supports up to 20 Drops
• Backup host option
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