A free trial is available at the W-CODE product page, though it is typically limited to 30 minutes of decoding per session.
The W-CODE software is a powerful tool for classifying, analyzing, and decoding radio data communications. WAVECOM Decoder Online Help 14.1.0 A free trial is available at the W-CODE
Wavecom strongly discourages downloading software from third-party sites for security and warranty reasons. Software obtained from unofficial sources may be compromised or lack the necessary hardware encryption support (CmStick) required for full functionality. wavecom.ch Wavecom W Code Digital Data Software Decoder A free trial is available at the W-CODE
17-Link requires a high sync correlation. Set to 85% (default is 60%). Do this under Decoder Settings → Sync → Correlation Threshold . A free trial is available at the W-CODE