Voice
Send each phone line's transfers to its own PBX
If your SIP trunk transfers calls through your PBX's API, you can now register several named PBX transfer endpoints and bind each phone line to one, so calls sharing a trunk reach the right PBX.
Add endpoints under PBX transfer endpoints on the SIP Channels page in the customer portal, then choose one with the PBX transfer endpoint setting on each line. Lines left on Trunk default keep working as before. These settings appear when your trunk transfers calls through an API.
API keys are write-only. If the endpoint a line uses is disabled, Zoe tells the caller transfer is not available and keeps helping.