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IOLAN SDSC Rack Dual Ethernet Terminal Server

iolan sdsc32 ac lg
  • 8, 16 and 32 software selectable RS232/422/485 serial port interfaces
  • Dual 10/100/1000 Ethernet with Redundant Path Technology
  • Advanced security features for data encryption, user authentication and event management
  • AC and 48v DC model available

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The IOLAN SDSC Terminal Server (also used as a Device Server or Console Server) is the most advanced product for serial to Ethernet applications.

Delivering the highest performance in a 1U form factor, an IOLAN SDSC offers robust security, reliability flexibility and next generation IP (IPv6) technology. It is ideal for applications that require remote serial device communication, data capture or device monitoring. With 8, 16 or 32 RJ45 ports, the IOLAN SDSC has the right fit for your serial to Ethernet application. The built-in dual Ethernet and Redundant Path Technology on the IOLAN SDSC provides dependable serial port access, making it the most reliable solution for connecting remote RS232, RS422 or RS485 equipment to Ethernet… all at the best price performance.

Ideal For

  • Network engineers and Project Managers requiring a high performance serial to Ethernet interface for serial RS232 or RS485 based devices
  • Environments where redundant network paths provided by Dual Ethernet interfaces are critical.
  • Sites that require cost effective RS232/422/485 device connectivity in 48v DC environments

Why IOLAN SDSC Terminal Servers are the preferred choice:

  • TrueSerial® delivers the most authentic serial connections across ethernet
  • Universal, software selectable RS232/422/485 ( EIA-232/422/485 ) serial ports prevents mechanical tampering in the field
  • High performance 400 MHz, 750 MIPS, 32 bit processor with integrated hardware encryption processor for the best throughput
  • Clustering – Provides a single view of all out of band console ports. Ideal for large data centers
  • Intelligent Power cycling of equipment with Perle Remote Power Switches
  • Next Generation IP support (IPv6) for investment protection and network compatibility
  • Primary/Backup host functionality enables automatic connections to alternate hosts should the primary TCP connection go down
  • RJ45 serial ports with Cisco pinouts for use with common CAT5 “rolled” cabling
  • EasyPort Web – Access equipment serial console ports by using your java-enabled Internet browser
  • FIPS 140-2 – Cryptographic modules meet US Government NIST compliancy
  • Dynamic DNS – Easy console management access from anywhere on the Internet
  • Java-free browser access to remote serial console ports via Telnet and SSH
  • Ping watchdog probes enable customers to power cycle equipment with attached Perle RPS power switches in the event of an unresponsive networking gear
  • Lifetime warranty – best investment protection available


Serial Port Access
Connect directly using Telnet / SSH by port and IP address
Connect with EasyPort menu by Telnet / SSH
Use an internet browser to access with HTTP or secure HTTPS via EasyPort Web menu
Java-free browser access to remote serial console ports via Telnet and SSH
Ports can be assigned a specific IP address ( aliasing )
Multisession capability enables multiple users to access ports simultaneously *
Multihost access enables multiple hosts/servers to share serial ports
In-band ( Ethernet ) and out-of-band ( dial-up modem ) support
Dynamic DNS enables users to find a console server from anywhere on the Internet
Domain name control through DHCP option 81
IPV6 and IPV4 addressing support
Primary/Backup host functionality enables automatic connections to alternate host(s)
SSH v1 and v2
PCI DSS Compliance: TLS v1.2, TLS v1.1, TLS v1.0, SSL v3.0, SSL v2.0
SSL Server and SSL client mode capability
SSL Peer authentication
IPSec VPN : NAT Traversal, ESP authentication protocol
SSH ciphers: AES-CTR, AES-GCM and ChaCha20-poly1305
SSL encryption: AES-GCM, key exchange ECDH-ECDSA, HMAC SHA256, SHA384
Encryption: AES (256/192/128), 3DES, DES, Blowfish, CAST128, ARCFOUR(RC4), ARCTWO(RC2)
Hashing Algorithms: MD5, SHA-1, RIPEMD160, SHA1-96, and MD5-96
Key exchange: RSA, EDH-RSA, EDH-DSS, ADH
X.509 Certificate verification: RSA, DSA
Certificate authority (CA) list
Local database
RADIUS Authentication, Authorization and Accounting
TACACS+ Authentication, Authorization and Accounting
LDAP, NIS, Kerberos Authentication
RSA SecureID-agent or via RADIUS Authentication
SNMP v3 Authentication and Encryption support
IP Address filtering
Disable unused daemons
Active Directory via LDAP
Terminal Server
SSH v1 and v2
Auto session login
LPD, RCP printer
MOTD – Message of the day
Serial machine to Ethernet
Tunnel raw serial data across Ethernet – clear or encrypted
Raw serial data over TCP/IP
Raw serial data over UDP
Serial data control of packetized data
serial ports with multiple hosts/servers
Virtual modem simulates a modem connection – assign IP address by AT
phone number
Virtual modem data can be sent over the Ethernet link with or without
SSL encryption
TruePort com/tty redirector for serial based applications on Windows, Linux, Solaris, SCO, HP UX, NCR UNIX and AIX. For a complete list of all the latest drivers click here
TrueSerial packet technology
provides the most authentic serial connections across Ethernet ensuring
serial protocol integrity
RFC 2217 standard for transport of serial data and RS232 control signals
Customizable or fixed serial baud rates
Plug-ins allow customer or Perle provided plug-ins for special applications
Software Development Kit ( SDK ) available
Serial encapsulation of industrial protocols such as ModBus, DNP3 and IEC-870-5-101
ModBus TCP gateway enables serial Modbus ASCII/RTU device connection to ModBus TCP
Data logging will store serial data received when no active TCP session and forward to network peer once session re-established – 32K bytes circular per port
Console Management
Sun / Oracle Solaris Break Safe
Local port buffer viewing – 256K bytes per port
External port buffering via NFS, encrypted NFS and Syslog
Event notification
Manage AC power of external equipment using Perle RPS power management products
– central console server enables access ports across multiple console
Windows Server 2003/2008
EMS – SAC support GUI access to text-based Special Administrative Console
Ping watchdog probes enable customers to power cycle equipment with attached Perle RPS power switches in the event of an unresponsive networking gear
Remote Access
Dial, direct serial PPP, PAP/CHAP, SLIP
  HTTP tunneling enables firewall-safe access to remote serial devices across the internet
Automatic DNS Update Utilize DHCP Opt 81 to set IOLAN domain name for easy name management and with Dynamic DNS support , users on the Internet can access the device server by name without having to know its IP address. See Automatic DNS update support for details
IPSEC VPN client/servers Microsoft L2TP/IPSEC VPN client ( native to Windows XP)
Microsoft IPSEC VPN Client ( native to Windows Vista )
Cisco routers with IPSEC VPN feature set
Perle IOLAN SDS/STS and SCS models
OA&M ( Operations, Administration and Management )
SNMP V3 – read and write, Perle MIB
Perle Device Manager – Windows based utility for large scale deployments
Configurable default configuration
Installation Wizard
Set a Personalized Factory Default for your IOLANs

* Available on 2 and 4 port models

Hardware Specs

Hardware Specifications – IOLAN SDSC – dual ethernet RS232 / RS485 / RS422 Serial Device Server

  AC Hardware 48v DC Hardware
Processor MPC8349E, 400 Mhz, 750 MIPS
RAM MB 64 64 128 64 64 128
Flash MB 16 16 16 16 16 16
Interface Ports
Number of Serial Ports 8 16 32 8 16 32
Serial port interface Software selectable RS232 / RS485 / RS422 DTE on RJ45 – RS485: full and half duplex
Sun / Solaris Sun / Oracle ‘Solaris’ Safe – no “break signal” sent during
power cycle causing costly server re-boots or downtime
Serial port speeds 50bps to 230Kbps with customizable baud rate support
Data bits 5,6,7,8, 9-bit protocol support
Parity Odd, even, Mark, Space, None
Flow Control Hardware, Software, Both, None
Serial port protection 15Kv Electrostatic Discharge Protection (ESD)
Local console port RS232 on RJ45 with DB9 adapter ( provided )
Network Dual 10/100/1000-base TX ethernet RJ45
Software selectable Ethernet speed 10/100/1000, Auto
Software selectable Half/Full/Auto duplex
Power Supply USA – IEC320-C13 to NEMA 5-15P line cord
UK – IEC320-C13 to BS1363 line cord
EU – IEC320-C13 to CEE 7/7 Schuko
South Africa – IEC320-C13 to BS546 line cord
Australia – IEC320-C13 to AS3112 line cord
Terminal Blocks with screw terminals accommodating 28 – 12 AWG wire sizes.
Dual DC Input : A / B
Nominal Input Voltage 110/230v AC 48V DC
Input Voltage Range 100-240v AC 36- 72V DC
AC Input Frequency: 47-63Hz
Typical power consumption
( Watts )
14.0 15.0 16.0 12.0 13.0 14.0
LEDs Power
System Ready
Network Link activity for each ethernet port
Serial: Transmit and Receive data per port
Environmental Specifications
Heat Output
( BTU/HR )
47.77 51.18 54.59 40.94 44.36 47.77
MTBF( hours *) 124,366 106,970 87,003 117,887 102,142 83,782
Operating Temperature: 0C to 55C, 32F to 131F
Storage Temperature: -40C to 85C, -40F to 185F
Humidity: 5 to 95% (non condensing) for both storage and operation
Case SECC Zinc plated sheet metal (1 mm)
Ingress Protection rating: IP30
Mounting 1U – 19″ rack, front and rear mounting hardware included. DIN Rail mounting kit optional
Product Weight and Dimensions
Weight 3.0 Kg, 6.6 lbs 3.1 Kg, 6.8 lbs 3.2 Kg, 7.0 lbs 3.0 Kg, 6.6 lbs 3.1 Kg, 6.8 lbs 3.2 Kg, 7.0 lbs
Dimensions 1U Rack form factor – 26.4 x 43.4 x 4.4 (cm), 10.38 x 17.1 x 1.75 (in)
Shipping Dimensions: 59 x 36 x 9 (cm), 23 x 14 x 3.5 (in)
Shipping weight: 4.2 Kg, 9.2 lbs 4.3 Kg, 9.5 lbs 4.5 Kg, 9.9 lbs 4.0 Kg, 8.8 lbs 4.1 Kg, 9.0 lbs 4.3 Kg, 9.5 lbs
Regulatory Approvals
Emissions: FCC Part 15, Subpart B, Class A
CFR47:2003, Chapter 1, Part 15 Subpart B,(USA) Class A
ICES-003, Issue 4, February 2004 (Canada)
CISPR 32:2015/EN 55032:2015 (Class A)
EN55011 (CISPR11)
EN61000-3-2 : 2010, Limits for Harmonic Current Emissions
EN61000-3-3 : 2010, Limits of Voltage Fluctuations and Flicker
Immunity CISPR 24:2010/EN 55024:2010
EN61000-4-2: Electrostatic Discharge
EN61000-4-3: RF Electromagnetic Field Modulated
EN61000-4-4: Fast Transients
EN61000-4-5: Surge
EN61000-4-6: RF Continuous Conducted
EN61000-4-8: Power-Frequency Magnetic Field
EN61000-4-11: Voltage Dips and Voltage Interruptions
Standard Safety Certifications: IEC 60950-1(ed 2); am1, am2 and
EN 60950-1:2006+A11:2009+A1:2010+A12:2011+A2:2013
CAN/CSA-C22.2 No. 60950-1-03 and ANSI/UL 60950-1, First Edition April 1st 2003 (Recognized Component)
Other: Reach, RoHS and WEEE Compliant
Directive 2011/65/EU restriction of the use of certain hazardous substances in electrical and electronic equipment and meets the following standard:: EN 50581:2012
CCATS – G168387
ECCN – 5A992
HTSUS Number: 8471.80.1000
Perle Limited Lifetime Warranty



RJ45 Socket

IOLAN RJ45 Socket Direction RS232 RS422 RS485 Full Duplex RS485 Half Duplex
1 right arrow RTS TXD+ TXD+ Data+
2 right arrow DTR      
3 right arrow TXD TXD- TXD- Data-
6 left arrow RXD RXD+ RXD+  
7 left arrow DSR      
8 left arrow CTS RXD- RXD-  

A “rolled” CAT5 cable will automatically perform DTE to DCE crossover

Optional Perle adapters for use with straight thru CAT5 cabling

*Calculation model based on MIL-HDBK-217-FN2 @ 30 °C

Application Diagrams


Using RAW TCP Sockets

A raw TCP socket connection which can be initiated from the serial-Ethernet device or from the remote host/server. This can either be on a point to point or shared basis where a serial device can be shared amongst multiple devices. TCP sessions can be initiated either from the TCP server application or from thePerle IOLAN serial-Ethernet adapter.


Using Raw UDP Sockets

For use with UDP based applications, Perle IOLANs can convert serial equipment data for transport across UDP packets either on a point to point basis or shared across multiple devices.

Console Server

Console Management

For access to remote console ports on routers, switches,etc, Perle IOLAN’s enable administrators secure access to these RS232 ports via inband Reverse Telnet / SSH or out of band with dial-up modems. Perle IOLAN models with integrated modems are available.

diagram console

Connect Serial-based Applications with a COM/TTY Port Driver

Serial ports can be connected to network servers or workstations running Perle’s TruePort software operating as a virtual COM port. Sessions can be initiated either from the Perle IOLAN or from TruePort.

diagram com tty

Serial Tunneling between two Serial Devices

Serial Tunneling enables you to establish a link across Ethernet to a serial port on another IOLAN. Both IOLAN serial ports must be configured for Serial Tunneling (typically one serial port is configured as a Tunnel Server and the other serial port as a Tunnel Client).

diagram tunneling
Virtual Modem

Virtual Modem

Enables the serial-Ethernet adapter to simulate a modem connection. When connected to the IOLAN and initiates a modem connection, the IOLAN starts up a TCP connection to another IOLAN serial-Ethernet adapter configured with a Virtual Modem serial port or to a host running a TCP application.

diagram modem

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