[cisco-voip] ATA190 Random De-Register from CUCM 10.5.2

[Ryan Huff]

I've used the ATA190 and it's family of 18X pretty often. In the case of the SIP devices like the 190 or 187 I have always been able to use the default SIP Profile settings; of course I'm generally dealing with vanilla networks and CCM's built very closely to the SRND.

Here is where I would start (if you haven't already):

What do you have the device security mode set to? If you have it 
set to Authenticated or Encrypted but it has not received a CTL file, the 
phone will attempt registration up to four times to make a secure 
connection.

Are the MAC addresses for Phone 1 and Phone 2 correct (Phone 2 will usually loose the first two characters and append a 01 at the end of the device name). If you support auto registration, remove the devices and let them auto register and see if they stabilize.

Any layer 1/2 issues (change out the patch cable, check the connection into the switchport ... etc)? Do you see any interface drops on the switchport? Is the switchport full duplex 10/100 or 10/1000? Have you shut/no shut the port just to see if clearing the port helps?

Go through the IVR menu on the ATA itself and verify that it reports all the same settings that you CCM device configs show. http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cata/190/1_0/english/administration/guide/sip/ATA190/a190_agBcd.html

Thanks,

Ryan 

From: bertacco.alessandro at alice.it
To: cisco-voip at puck.nether.net
Date: Mon, 23 Mar 2015 11:28:44 +0100
Subject: [cisco-voip] ATA190 Random De-Register from CUCM 10.5.2

Hi Guys,   ATA190 FW version 1.1.2.(005) with CUCM 10.5.2.10000-5, de-register randomly, and need to reboot the device to re-register again on the CUCM. Anyone as the same issue? Do you use a special SIP Device profile changing some timings, or you are using standard SIP Device Profile? Thank you all Regards  Alessandro Bertacco 
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