hello, I am faced with a major problem: the model VVX 410, I encounter a delay between when the phone rings or the call appears on the screen. this little delay from 1 to 2 seconds. ca seem little bit but when running ca 5 different lines starts to become problematic: call loss, slow implementation. ca becomes so unmanageable phone responds slowly. I tested with the latest 5.5.0 firmware, 5.0.0, the 4.3 without much success. I also tested with the default configuration: no better. Looking more closely we see that the CPU of the phone makes 100% peak when he gets a call and this without reason. the graphic display is extremely slow. no problem in sound. I need a solution to this problem knowing that if installing on all my phones purchased VVX 410 310 on a phone that's even worse, it becomes unusable. I need a solution I can not rest with such slow phones. thank you for your solution.
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