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  1. MrMoanavator

    IP Office SIP "Incompatible" when dialling out of service numbers

    Hi there, We have a customer, they're on R11 software & have SIP trunks. When they dial a number that does not exist, it doesn't give them a message to say that, like normal phones do. all it does it says INCOMPATIBLE on the screen. Ringing the number from a mobile confirms the number is dead...

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