Hello everyone, im in desperate need of someone's help. I enabled call forwarding on some extensions and made it forward to mobile phones. So when someone calls an extension at the office and they don't answer then its supposed to forward to their cell phone. However when I test it, the extension rings fine but when it transfers to the cell phone it says "call transfer failed". I ran a wireshark on the call and I get a 404 not found when it tries to go to the cell phone. The 404 not found is generated by the sip trunk providers IP address. I called my phone provider and they say everything is fine on their end theres nothing they can do, that it must be some setting on the pbx side. I also called 3CX and they said its for sure the SIP Trunk provider because its their IP address that's rejecting it...I DONT KNOW WHAT TO DO. PLEASE HELP.