#4 RS-232 Serial Over Ethernet Terminal Server/Client


IP Electronix PH232Ex4 bidirectional communication terminal server/client is a simple solution for connecting serial devices to a network which results in having 4 RS-232 serial ports over Ethernet network. This converter uses transparent communicate protocol, so it is not required to understand complex Ethernet TCP/IP protocol, and no modification in serial programs is needed. It operates as a Real COM, TCP Server, TCP Client, UDP Server and UDP Client Full-Duplex converter and supports bidirectional connection.

PH232Ex4 is designed for industrial usage and is useful for connecting any device with a serial interface to a computer via Ethernet supported network like LAN, WAN … and can be used in Industrial Automation, Telecommunications, SCADA Systems, DCS Systems ….

Protection against Surge, ESD and EMI is implemented in its design and it has 3kV insulation between Ethernet and RS-232 sides. Furthermore, all the RS-232 ports are insulated from each other too.


  • Number of Ports: #4 RS-232 Serial Port, #1 Ethernet RJ45 (10/100 Mbps) Port;
  • Serial Standard: Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU v.28 Standards;
  • Network Protocols: ICMP, IP, TCP, UDP, DHCP, Telnet, DNS, ARP, HTTP;
  • RS-232 Signal (Full Handshake Support): TxD, RxD, DTR, RTS, DSR, CTS, RI, GND;
  • Baud-Rates: 50, 75, 110, 150, 300, 450, 600, 900, 1200, 1800, 2400, 3600, 4800, 7200, 9600, 14400, 19200, 28800, 38400, 56000, 57600, 76800, 115200, 153600, 184320, 230400, 307200, 460800, 921600 bps; Selectable. Custom Baud-Rates are supported too;
  • RS-232 Parity: Even, Odd, None, Mark and Space; Selectable;
  • Power (Green) LED Indicator;
  • Transmit (Blue) and Receive (Yellow) LED Indicator for All Ports;
  • TCP Server (Green), TCP Client (Green) and UDP (Green) LED Indicator;
  • ESD Protection: RS-232 Bus-Pin ESD Protection Exceeds ±15 kV Using Human-Body Model (HBM);
  • Dimensions: 218mm x 122mm x 30mm (8.58in x 4.80in x 1.18 in);
  • Operating Temperature: -20°C to +85°C (-4°F to +185°F);
  • 1 Year Guarantee and 5 Years Support.

User's Manual Data Sheet