I have already created a support ticket with Grandstream as I think this is probably an issue with my HT813, rather than FreePBX, but I thought I’d check here just encase.
I am having a really strange problem where I can’t place calls to landline / mobile numbers… but I can still call numbers such as 1471 and the external 123. If I try to make an outgoing call to landline / mobile numbers, I get the PSTN network message telling me to check the number and try again?
I set up syslog on the HT813 and FreePBX is passing the correct number over to the HT813. I was just wondering if anybody here would maybe have an idea of what might be wrong here?
PS. I recently upgraded the firmware on the HT813 - I’m going to assume it’s the firmware that’s broke something. I’m trying to downgrade it back to what I had before but that’s proving to be a challenge.