SOLVED: Syspine/Aastra interoperability issue

Breaking News! – Syspine have a revised firmware version (1.2.19) for their ATA, that we have been told will resolve the spurious DTMF tone issue that we reported here.
The update has not been released publicly, but you can get it by contacting Syspine Technical Support at 800-713-3386.

Syspine/Aastra interoperability issue

An issue has recently surfaced that has highlighted a rather interesting interoperability problem between Syspine base units and Aastra phones.

Aastra releases updated firmware for AastraLink RP

This just came from Aastra:
Maintenance release 2.1.1.123 for AastraLink RP™ phones is now available on the AastraLink RP™ website. This release includes both performance and feature enhancements including:
• Improved “Blue button” response time (removing dialtone and ringing for blue button presses)
• CT handset improvements, including visual voicemail notifications
• DTMF support for external IVRs using Early [...]