Syspine/Aastra interoperability issue
An issue has recently surfaced that has highlighted a rather interesting interoperability problem between Syspine base units and Aastra phones.
If you’re using a Syspine base unit with the built-in ATA, and you’re using Aastra phones, you’re likely to hear sporadic DTMF tones on the phones. The person you’re speaking to won’t hear this problem, and internal calls or calls via a SIP trunk won’t exhibit this behavior.
After speaking with Syspine we’ve found out that the problem is being caused by the Syspine doing out-of-band signalling via DTMF, which the Aastra phones are interpreting as standard DTMF tones which are then played through the handset.
The good news is that a fix is being worked on. Syspine and Aastra engineers are collaborating to resolve the issue. I’m told that it will be a couple of weeks before the fix is released, in the form of a firmware upgrade for the Syspine ATAs.
We’ll keep you posted and we’ll provide a link to the fix once it’s available.
This is also happening with my AASTRA handset and a D-Link base unit.
[...] 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. [...]