Third party SIP devices register - unregister on the Call Manager
I have an issue with a numbers of wireless DECT phones connected to a Call Manager System version: 18.104.22.1680-3. The phones are created as third party (basic) devices.
The DECT phones are connected to a POLYCOM/KIRK KWS 8000 wireless server and the phones are also created here. The SIP status in the GUI indicates 200 => OK. The DECT phones connect to DECT bases around the premises. I have gone carefully through the setup on both the Kirk Wireless Server and Cisco Call Manager.
Unfortunatley I experience that the DECT phones registered on the Call Manager keeps unregistrering in a random pattern which properly started when changing from a 1500 server to a KWS8000 Some phones stays registered for several minutes and then un-register others bounce back and forth between register and unregister state. I assume that when the phones are able to regisiter in the first place the authentification is ok otherwise the DECT phone would never be able register in the first place but would be rejected.
However, the Call Manager trace indicates the following:
I see a whole lot of these data in the log and If I am not mistaken the reason code 10 is DeviceUnregistered - The device has explicitly unregistered. Possible causes include a change in the IP address or port of the device. No action is necessary; the device will re-register automatically.
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