Solved: Echo's and no external calls

[YamiHoshi]

I tested 2 phones.
I can dial with each other, but, if I dial myself, I hear echo's, instead of hearing bleeps.

Edit:
Also, I can't dial to external phones, like my mobile phone.

 

[YamiHoshi]

Re: Cellphones: Echo's and no external calls

Solved: Own mistakes.