I just bought this phone for my company (3 lines) and having changed operator to Sunrise, I can't get it to work.
"Check the phone connection! " 😤
Do you have an idea? Because right now I'm stumped... thanks in advance.

Question

I just bought this phone for my company (3 lines) and having changed operator to Sunrise, I can't get it to work. 
"Check the phone connection! " 😤
Do you have an idea? Because right now I'm stumped... thanks in advance.

Answer

This may be due to a change in the type of telephone line, normal or via ADSL. The connection may be different. This should be explained in the operating instructions.

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Question about Gigaset Dx800a

I just bought this phone for my company (3 lines) and having changed operator to Sunrise, I can't get it to work. "Check the phone connection! " 😤 Do you have an idea? Because right now I'm stumped... thanks in advance.