this is my first post here and I´m sorry about my english is not so god.
First question I have here is a little problem with our SPA500 series. We use this phones with an 3CX PBX for serveral months now without problems, but for some weeks now there is the problem that for an incoming call you take up the handset and there is no audio for about 20 till 30 sec. After this everything works fine.
At the display there is from the first second a "connected" with a count, but as I said no audio. This problem only takes effect at the Cisco phones here and not at any other phone. Interesting is also that with every firmware I tryed the delay depends from 5 up to 40 second.
Can you give me some suggestions about that?