Aastra has a broken SCA implementation. We have been working with them to resolve it but as of yet they have failed to deliver a working firmware for their phones. Mike On Apr 30, 2010, at 10:07 PM, Mark Maly wrote:
Hi,
I’ve tried to patiently figure this out by reading the wiki and this list. Unfortunately, I’ve been unable to get it right.
I have 2 Aastra 6731is and a 51i and trying to get SCA working. I’m experiencing problems similar to the Cisco thread from last month – outgoing calls implement SCA well. Incoming calls ring all lines and appearances work, but when one phone is answered, the line appearances are removed from the remaining phones. I am not attempting to use any DNS.
My configuration has all three phones plus FS on a local LAN. Nothing too fancy. Each line is configured for Broadsoft SCA and SCA bridging is enabled globally for the phones.
Trying to update/replace an old phone at my church.