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.

Syspine releases updated ATA firmware

Syspine has released firmware V1.2.12 for the ATA module(s) in their DOS-A50 base unit.
You can download it (along with firmware for their phones) on their download page here.
We recommend that whenever you install updated ATA module firmware, you also update the Syspine Module Page firmware to the latest version (available from the same download location).