I have an 3CX installation with 2 snom370 phones and some snom m3 phones. On one Snom 370 phones i use voicemail and it works fine. On the other Snom 370 phone i have also voicemail enabled, but i cannot access it through the keys on my phone. It says alle the time that my pincode is incorrect. This is not true. I reset the pincode to another pincode and it still says that the number is wrong. I can access my voicemail by the 3cx assistant but not by phone. Then i created an new extension with the same hardware. Now it asks for my pincode and after that for my extension. After typing these three digits it asks again for the extension. And again. And again.