https://community.cisco.com/t5/ip-telephony-and-phones/cisco-ata192/m-p/4816125#M409522 <P>I am using the ATA192 to supply analog Extension to a Door King call box I have successfully registered the device and it is functioning</P><P>but I am having the following ongoing issue: when I press the call button on the Door Box and it goes off hook and dials the&nbsp;</P><P>ring group number intermittently on a daily basis the ATA192 locks up with a loud constant touchtone and remains on the ATA192</P><P>even when disconnected from the call box the only way to get it to stop is to reset the ATA , It will work fine for a few times then</P><P>locks up again when someone presses the call box again. ? does anyone have any idea why this is happening</P> Mon, 17 Apr 2023 15:55:04 GMT rodmartin 2023-04-17T15:55:04Z https://community.cisco.com/t5/ip-telephony-and-phones/cisco-ata192/m-p/4816125#M409522 <P>I am using the ATA192 to supply analog Extension to a Door King call box I have successfully registered the device and it is functioning</P><P>but I am having the following ongoing issue: when I press the call button on the Door Box and it goes off hook and dials the&nbsp;</P><P>ring group number intermittently on a daily basis the ATA192 locks up with a loud constant touchtone and remains on the ATA192</P><P>even when disconnected from the call box the only way to get it to stop is to reset the ATA , It will work fine for a few times then</P><P>locks up again when someone presses the call box again. ? does anyone have any idea why this is happening</P> Mon, 17 Apr 2023 15:55:04 GMT https://community.cisco.com/t5/ip-telephony-and-phones/cisco-ata192/m-p/4816125#M409522 rodmartin 2023-04-17T15:55:04Z