Why won't my Nokia Lumia 630 dial out one specific number, why is that?

[Windows Central Question]

my Nokia Lumia 630 will not dial out one specific number, why is that

it dials out all cellphone numbers & landline numbers but wont dial one particular landline number. yet i can dial my cellphone from the same landline number the cellphone will not dial.

 

[Harrie-S]

Re: my Nokia Lumia 630 will not dial out one specific number, why is that

Please check
Settings > swipe to applications > phone > international assist. If it's ON set it to OFF

 

[ajcletus500]

Re: my Nokia Lumia 630 will not dial out one specific number, why is that

it dials out all cellphone numbers & landline numbers but wont dial one particular landline number. yet i can dial my cellphone from the same landline number the cellphone will not dial.

I have the same problem since today morning and i have tried the solution listed however it doesnt help.
Please help me coz it is an important contact that I call everyday