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IOLAN SDG W Serial Device Servers (Wireless LAN Serial to Ethernet)

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  • High performance WLAN ( Wi-Fi ® ) : Dual band radio supporting IEEE 802.11 a,b,g,n
  • Wireless speeds up to 150Mbps
  • 1, 2 or 4 software selectable RS232/422/485 serial port interfaces
  • High-Speed Gigabit Ethernet ( 10/100/1000 Base-T )
  • Advanced security features for data encryption, user authentication and event management
  • Wireless Infrastructure and peer to peer connectivity modes

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For secure, High-Speed serial to Ethernet connectivity over wireless LAN applications, the IOLAN SDG W Device Server is the most advanced compact product available on the market today. Delivering high performance in a compact size, an IOLAN SDG W offers a support for a broad range of high performance Wireless LAN technology, extensive security, flexibility and next generation IPv6 technology making it ideal for applications that require remote serial device/console management, data capture or monitoring.

Why IOLAN SDG Wireless Device Servers are the preferred choice:

  • Broad range support of Wireless LAN Technology : IEEE 802.11 a,b,g,n @ 2.4Ghz/5Ghz
  • Fast wireless – speeds up to 150Mbps
  • High-Speed Gigabit Ethernet 1000base-T interface including support for 100base-TX and 10base-T
  • As a wireless client proxy, provides wireless connectivity to central access points for serial and ethernet devices
  • Can provide a direct serial to serial peer connection over wireless
  • Software Access Point ( SoftAP ) for up to 6 wireless clients.
  • Fast Wireless Roaming capability is ideal for mobile applications where the IOLAN can transparently roam between APs ( Access Points ) that share the same ESS ( Extended Service Set )
  • Redundant dual power inputs ( barrel and terminal block )
  • TrueSerial® packet technology delivers the most authentic serial connections across Ethernet for serial protocol integrity
  • Indicators for network and serial interfaces for easy troubleshooting
  • Plug & Play installation utility eliminates configuration hassles for all IOLAN’s on your IP network
  • TruePort – Perle’s com/tty redirector for serial based applications operates on Windows, Vista, Linux, Solaris, SCO and Unix
  • Next Generation IP support ( IPv6 ) for investment protection and network compatibility
  • Compact and protective solid steel enclosure for tabletop, wall mount or DIN rail mounting
  • 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

Secure Serial to Ethernet Connectivity

The IOLAN SDG Wireless Device Server enables administrators to securely access remote serial console ports on equipment such as PBX, servers, routers, network storage equipment and security appliances through an IP network. Sensitive data such as credit card holder information is protected through standard encryption tools such as Secure Shell (SSH) and Secure Sockets Layer (SSL). Access by authorized users is assured via authentication schemes such as RADIUS, TACACS+, LDAP, Kerberos, NIS and RSA Security’s SecurID tokens.

By using encryption technologies, an IOLAN can protect sensitive and confidential data from a serial device such as a credit card reader before being sent across a corporate Intranet or public Internet. For compatibility with peer encryption devices, all of the major encryption ciphers such as AES, 3DES, RC4, RC2 and CAST128 are fully supported.

Recognized as the most secure method for communicating to remote private networks over the Internet, the IPSec standard provides robust authentication and encryption of IP packets at the network layer of the OSI model. As a standard it is ideal for multi-vendor interoperation within a network providing flexibility and the ability to match the right solution for a particular application.

IOLAN Plug-ins

By choosing a Perle IOLAN Device Server you can rest assured that virtually any device with a serial COM port will operate in conjunction with your desired application exactly as it did when you had it directly connected. In the unlikely event that the Perle IOLAN Device Server does not enable this out of the box, Perle will make it work.

Perle IOLAN Device Servers utilize customer installable “Device Plug-ins” to successfully network devices where other solutions have failed. Request a free engineering consultation now.

Advanced IP Technology

With support for Next Generation IP (IPv6) the IOLAN Serial to Ethernet Device Server range provides organizations with investment protection to meet this rapidly growing standard.

Demand for IPv6, which is compatible with IPv4 addressing schemes, is driven by the need for more IP address. With the implementation and rollout of advanced cellular networks, a robust method is needed to handle the huge influx of new IP addressable devices on the Internet. In fact, the US Department of Defense has mandated that all equipment purchased be IPv6 compatible. In addition, all major Operating Systems such as Windows, Linux, Unix and Solaris, as well as routers, have built-in support for IPv6.

It is therefore important for end users and integrators to select networking equipment that incorporates the IPv6 standard. The IOLAN line with support for IPv6 already built in, is the best choice in serial to Ethernet technology.

Flexible and Reliable Serial to Ethernet Connections

An IOLAN SDG W Device Server is ideal for wirelessly connecting serial based COM port,
UDP or TCP socket based applications to remote devices. Perle’s TruePort re-director provides fixed TTY or
COM ports to serial based applications enabling communication with remote
devices connected to Perle IOLAN’s either in encrypted
or clear text modes. You can also tunnel serial data between
devices across an IP network.

Perle’s Device Management software provides better
centralized control of multiple units resulting in maximum
uptime for your remote equipment.

All IOLAN SDG W models have added protection against electrostatic
discharges and power surges with robust 15Kv ESD protection
circuitry enabling organizations to utilize this solution
in the field with confidence.

Lifetime Warranty

All Perle IOLAN SDG Serial to Ethernet Device Servers are backed by the best service and support
in the industry including Perle’s unique lifetime warranty. Since 1976 Perle has been providing its customers with networking
products that have the highest levels of performance, flexibility and quality.

Wi-Fi is a registered trademark of Wi-Fi Alliance Corporation


Topology Support
Serial to WLAN
Serial to ethernet
Ethernet to WLAN
Infrastructure ( to Access Point ) and secure peer to peer using SoftAP ( vs legacy “Ad-Hoc” )
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 on 2 and 4 port models
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
Wireless LAN : WPA-PSK, WPA2-PSK & Enterprise ( EAP, PEAP, LEAP ), WEP, IEEE 802.11i, IEEE 802.1x supplicant
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 )
WiFi Protected Setup ( WPS )
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

Hardware Specs

Hardware Specifications – IOLAN SDG W Wireless LAN Serial Device Servers

Processor 600Mhz ARM Processor
Flash MB 4G
Interface Ports
Number of Serial Ports 1 or 2 ( DB9M ) 4 ( RJ45 )
Serial Port Interface Software selectable EIA232/422/485
Back of product Back of IOLAN SDG1/2 W Back of IOLAN SDG4 W
Sun / Solaris Sun / Oracle ‘Solaris’ Safe – no “break signal” sent during
power cycle causing costly server re-boots or downtime
Serial Port Speeds 300bps 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 Serial Port
Ethernet Network Autosensing 1000-base-T / 100-base TX / 10-base T Auto-MDIX
Software selectable Ethernet speed 1000/100/10
Software selectable Half/Full/Auto duplex
Ethernet Isolation 1.5Kv Magnetic Isolation
Integrated Wireless Access
Wireless LAN standards IEEE 802.11a
IEEE 802.11b
IEEE 802.11g
IEEE 802.11n
IEEE 802.11i
Wireless Topology Infrastructure ( AP ) and Peer to Peer- (SoftAP) modes
Wireless Radio Dual-Band Radio ; 2.4GHz and 5GHz 20, 40Mhz SISO 2.4-GHz
Maximal Ratio Combining (MRC), Rx Diversity 2.4 GHz MRC support for up to 1.4 Extended Range and 5 GHz Diversity Capable
Wireless Data Rates 802.11n: 15, 30, 45, 60, 90, 120, 135, 150 Mbps ( 40Mhz channel @ 400ns Short GI )
802.11a/g: 6, 9, 12, 18, 24, 36, 48, 54 Mbps 802.11b: 1, 2, 5.5, 11 Mbps
Operational Frequency Range (MHz) 2412 to 2484 MHz
4910 to 5825 MHz
Modulation DSSS, CCK, OFDM, BPSK, QPSK, 16-QAM, 64-QAM

Wireless Receiver Sensitivity in dBm
( 2.4Ghz SISO )

802.11b/g ( 20 MHz channel )
1 Mbps: -95.0
2 Mbps: -92.0
5.5 Mbps: -89.2
6 Mbps: -91.0
9 Mbps: -89.0
11 Mbps: -86.3
12 Mbps: -88.0
18 Mbps: -85.5
24 Mbps: -82.5
36 Mbps: -79.0
48 Mbps: -74.0
54 Mbps: -72.7

802.11n ( 20 MHz channel ) @ 400ns GI
7.2 Mbps ( MCS0 ): -89.3
14.4 Mbps ( MCS1 ): -86.5
21.7 Mbps ( MCS2 ): -84.5
28.9 Mbps ( MCS3 ): -81.5
43.3 Mbps ( MCS4 ): -78.0
57.8 Mbps ( MCS5 ): -73.5
65.0 Mbps ( MCS6 ): – 71.5
72.2 Mbps ( MCS7 ): -70.0

802.11n ( 40 MHz channel ) @ 400ns GI
15.0 Mbps ( MCS0 ): -89.3
30.0 Mbps ( MCS1 ): -86.5
45.0 Mbps ( MCS2 ): -84.5
60.0 Mbps ( MCS3 ): -81.5
90.0 Mbps ( MCS4 ): -78.0
120.0 Mbps ( MCS5 ): -73.5
135.0 Mbps ( MCS6 ): – 71.5
150.0 Mbps ( MCS7 ): -70.0

Wireless Transmit Power in dBm
( 2.4Ghz SISO )

( 20 MHz channel )
1 Mbps:  16.0
2 Mbps:  16.0
5.5 Mbps:  16.0
6 Mbps:  16.5
9 Mbps:  16.5
11 Mbps:  16.0
12 Mbps:  16.5
18 Mbps:  16.5
24 Mbps:  16.5
36 Mbps:  15.2
48 Mbps:  14.3
54 Mbps:  13.5
MCS0 : 16.0
MCS1 : 16.0
MCS2 : 16.0
MCS3 : 16.0
MCS4 : 15.2
MCS5 : 14.3
MCS6 : 13.5
MCS7 : 12.6

( 40 MHz channel )
MCS0 : 14.0

MCS7 : 11.8

Wireless Receiver Sensitivity in dBm
( 5Ghz SISO )

6 Mbps:  -92.5
9 Mbps:  -90.5
12 Mbps:  -90.0
18 Mbps:  -87.5
24 Mbps:  -84.5
36 Mbps:  -81.0
48 Mbps:  -76.5
54 Mbps:  -74.6

802.11n ( 20MHz channel ) @ 400ns GI
7.2 Mbps ( MCS0 ): -91.4
14.4 Mbps ( MCS1 ): -88.0
21.7 Mbps ( MCS2 ): -86.0
28.9 Mbps ( MCS3 ): -83.0
43.3 Mbps ( MCS4 ): -79.8
57.8 Mbps ( MCS5 ): -75.5
65.0 Mbps ( MCS6 ): – 74.0
72.2 Mbps ( MCS7 ): -72.4

802.11n ( 40MHz channel ) @ 400ns GI
15.0 Mbps ( MCS0 ): -88.5

150.0 Mbps ( MCS7 ): -69.3

Wireless Transmit Power in dBm
( 5Ghz SISO )

6 Mbps:  18.0
9 Mbps:  18.0
12 Mbps:  18.0
18 Mbps:  18.0
24 Mbps:  17.4
36 Mbps:  16.5
48 Mbps:  15.8
54 Mbps:  14.5

802.11n ( HT20 ) @ 400ns GI
7.2 Mbps ( MCS0 ):  18.0
14.4 Mbps ( MCS1 ):  18.0
21.7 Mbps ( MCS2 ):  18.0
28.9 Mbps ( MCS3 ):  18.0
43.3 Mbps ( MCS4 ):  16.5
57.8 Mbps ( MCS5 ):  15.8
65.0 Mbps ( MCS6 ):  14.5
72.2 Mbps ( MCS7 ):  12.0

802.11n ( HT40 ) @ 400ns GI
15.0 Mbps ( MCS0 ):  16.5

150.0 Mbps ( MCS7 ):  12.0

Short Guard Interval (SGI) 800ns and 400ns ( Short Guard Interval )
Wireless Antenna Dual-band 2.4/5.0 GHz, Omni-directional, Dipole antenna, 50 Ohm, 2 dBi, black with RP-SMA / RSMA finger tighten connector. Same antenna can be used as Main and/or Diversity for increased wireless performance, signal reliability, and extended range.
Wireless Security WEP, WPA-PSK, WPA2-PSK & Enterprise ( EAP, PEAP, LEAP ), 802.11i (includes hardware-accelerated Advanced Encryption Standard [AES] ), 802.1x supplicant
Fast Wireless Roaming Ideal for mobile applications , the IOLAN can transparently roam between APs ( Access Points ) that share the same ESS ( Extended Service Set )
WiFi Protected Setup (WPS V2) A plug and play set up feature where the IOLAN can easily connect to a WPS capable central access point or a SoftAP compliant device supporting WPS
Power Supply 120 V / 230V AC to 12vDC Wall Power Adaptor included.  ( Barrel connector, commercial-grade temperature – 0 to 60C )
2 x Power Supply Selection Use  external power 9-30v DC on standard 5.5mm x 9.5mm x 2.1mm barrel socket or 2-pin terminal block
Nominal Input Voltage 12/24v DC
Input Voltage Range 9-30v DC
Typical Power Consumption
@ 24v DC ( Watts )
1 port : 3.96
2 port: 4.23
LEDs Power/Ready
Network Link
Network Link activity
Serial: Transmit and Receive data per port
Wireless Link
Wireless Strength
Environmental Specifications
Heat Output
( BTU/HR )
1 port: 13.5
2 port: 14.4
MTBF ( Hours )* 1 port : 222,675
2 port : 206,430
Operating Temperature -40° C to 75° C ( -40 F to 167° F )
Storage Temperature -40 C to 85 C (-40 F to 185 F)
Humidity 5 to 95% (non-condensing) for both storage and operation.
Case SECC Zinc plated sheet metal (1 mm)
Ingress Protection Rating IP40
Mounting Wall or Panel mounting, DIN Rail mounting kit optional
Product Weight and Dimensions
Weight 0.25 kg (0.55 lbs) 0.4 kg (0.88 lbs)
Dimensions 90 x 76 x 24 mm
(3.5 x 3.0 x 0.9 in)
110 x 111 x 24 mm
(4.3 x 4.4 x 0.9 in)
Shipping Dimensions 26 x 17 x7 cm
(10.2 x 6.7 x 2.8 in)
26 x 17 x7 cm
(10.2 x 6.7 x 2.8 in)
Shipping weight 0.55 kg (1.21 lbs) 0.71 kg (1.6 lbs)
Regulatory Approvals
Emissions FCC Part 15, Subpart B, Class B
CFR47:2003, Chapter 1, Part 15 Subpart B,(USA) Class B
ICES-003, Issue 4, February 2004 (Canada)
EN55022:1998 + A1:2000 + A2:2003 Class A
EN61000-3-2 : 1995, Limits for Harmonic Current Emissions
EN61000-3-3 : 1995, Limits of Voltage Fluctuations and Flicker
Immunity EN55024:1998 + A1:2001 + A2:2003
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
Safety IEC 60950-1 : 2005 (2nd Edition) + A1 : 2009 and
EN 60950-1 : 2006 + A11 : 2009
CAN/CSA-C22.2 No. 60950-1-03 and ANSI/UL 60950-1,
First Edition April 1st 2003 (Recognized Component)
Wireless Regulatory Domain FCC/ICES
Users are responsible for verifying approval for use in their individual countries.
Radio Approvals

FCC Part 15.247 Subpart C ( 2.4 Ghz )
FCC Part 15.407 Subpart E ( 5 Ghz )

RSS-210 ( Canada ),  RSS-Gen Issue 2 ( Canada ), ICES-003 Issue 4

ETSI EN 301 489-1 (V1.9.2)
ETSI EN 301 489-17 (V2.2.1)
ETSI EN 300 328 (V1.8.1)

ETSI EN 301 893 (V1.7.1)

Frequency Bands

2.412 to 2.462 GHz; 11 channels
5.180 to 5.320 GHz; 8 channels
5.500 to 5.700 GHz, 8 channels (excluding 5.600 to 5.640 GHz)
5.745 to 5.825 GHz; 5 channels

2.412 to 2.472 GHz; 13 channels
5.180 to 5.320 GHz; 8 channels
5.500 to 5.700 GHz; 8 channels (excluding 5.600 to 5.640 GHz)

MIC ( formally TELEC )
2.412 to 2.472 GHz; 13 channels
4.920 to 4.980 GHz; 4 channels
5.030 to 5.091 GHz; 3 channels
5.180 to 5.240 GHz; 8 channels

5.500 to 5.700 GHz; 11 channels

Other Reach, RoHS and WEEE Compliant
CCATS – G168387
ECCN – 5A992
HTSUS Number: 8471.80.1000
Perle Limted Lifetime Warranty

Serial Connector Pinout
IOLAN DB9M Socket Direction RS232 RS485 Full Duplex RS485 Half Duplex RS422
1 in DCD
2 in RxD RxD+ RxD+
3 out TxD TxD- DATA- TxD-
4 out DTR
6 in DSR
7 line RTS TxD+ DATA+ TxD+
8 in CTS RxD- RxD-
9 line
IOLAN RJ45 Socket Direction RS232 RS485 Full Duplex RS485 Half Duplex RS422
1 in DCD
2 out RTS TxD+ DATA+ TxD+
3 in DSR
4 out TxD TxD- DATA- TxD-
5 in RxD RxD+ RxD+
7 in CTS RxD- RxD-
8 out DTR

Optional Perle adapters for use with straight thru CAT5 cabling

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

Application Diagrams

Seamless Wireless Roaming

Serial devices can roam

IOLAN SDS W units installed on mobile devices, such as fork lifts with a serial interface, can maintain a continuous connection to network services that are part of Wireless Access Point infrastructure that shares the same ESS ( Extended Service Set ).

Seamless Wireless Roaming

Using RAW TCP Sockets over Wireless LAN

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 the Perle IOLAN W serial-Ethernet adapter.


Using Raw UDP Sockets over Wireless LAN

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 over Wireless LAN

For access to remote console ports on routers, switches, etc. Perle IOLAN’s enable administrators secure access to these RS232 ports via in-band Reverse Telnet / SSH over wireless LANs.

Console Server

Connect Serial-based Applications over Wireless LAN 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.

Serial Tunneling over Wireless

Serial Tunneling between two Serial Devices over Wireless Peer to Peer

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.

Serial Tunneling over Wireless

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