A call for help from The Netherlands
Unable to call international numbers from Grandstream GXP2100. Version 184.108.40.206
For example 004733123456. The call activity does not appear in the log of the Fritz!Box so I think it is not convenient for the Grandstream.
I think it can’t handle the two ‘00’ at the beginning of the international number. If I make a ‘+’ of that nothing happens. The phone screen shows “No Answer”.
Numbers within the Netherlands will work and numbers abroad from a DECT device will work. The Grandstream is connected to a Fritz!Box7590 and is connected via LAN/WLAN.
See screenshot of call instructions from the account in question.