I am in the process of switching to 3CX from Asterisk/FreePBX. I have trunks and DID's from Sipstation.com. The trunks they sale are from bandwidth.com. I would like to use these trunks and DID's on 3CX. I found the VoIP Provider template for Bandwidth.com on the 3CX website but it asks for an external number not just a sip user name and password. has anyone gotten sipstation trunks and did's to work with 3CX?