Routing between two pbx

Hi everybody. How can I configure a trunk between local PBX and Cloud SIP pbx with YETI switch between them?

I created two accounts, Customer and Vendor, how Can I set passwords and use it for trunking ?

Have you read our quick start guide?

Yes I read it. but I can’t undersatn how install account on PBX. Will it be normal if I just write on pbx login: Vendor(Customer) and Yeti’s IP without password

It depends on customer auth and gateway configurations on yeti side.