W&T connects
Interfaces for TCP/IP, Ethernet, RS-232, RS-485, USB, 20mA, glass and plastic fiber optic cable, http, SNMP, OPC, Modbus TCP, I/O digital, I/O analog, ISA, PCI
Firmware:

AT-Modem-Emulator

Model 58666


Current firmware
Date Changes and comments Revision
July 24, 2019
  • Fixed possibly critical weakness in Web Based Management
  • Readout of the UART error register corrected
1.48
ZIP Download
Older firmware
Date Changes and comments Revision
June 18, 2018
  • Connection opening optimized when using with mobile networks with delayed return direction
1.46
ZIP Download
March 21, 2018
  • Processing of BREAK signals adjusted
  • Support of a new flash type
  • Optimized operation in DHCP environments with relay agents
  • Security problem with Port 1094/TCP fixed
  • Optimizations/corrections for Web-Based-Management
  • Buffer handling optimized
1.45
ZIP Download
December 28, 2016
  • Optimized system response in noisy/slow network environments
1.40
ZIP Download
August 8, 2016
  • DHCP: Lease time calculation corrected
1.39
ZIP Download
June 15, 2016
  • Various SSL/TLS optimizations
1.38
ZIP Download
April 12, 2016
  • Serial buffer handling optimized
1.37
ZIP Download
December 4, 2015
  • NEW: Optional TLS encrypted data connection
  • Corrected behavior with CRLF as line end and dial-up via URL
1.35
ZIP Download
October 8, 2015
  • Corrected behavior for CRLF as line end of AT commands
1.34
ZIP Download
January 6, 2015
  • First version
1.32
ZIP Download