This morning the fax was calling various extensions internally, instead of calling out. I was able to resolve this, but I had to restore the line assignments. No problems this time around. Maybe removing the ringing on fax extensions did the trick.

It works, but darned if I understand how-
The 4 fax machines each have a dedicated analog line (none of them are tied to the Partner). The Partner system connects to the fax server via the fax extensions.
- I see no way for the lines to access the system.

Might the 4 fax lines be pointed to one of the 10 system numbers ? Customer doesn't know, and didn't want me calling and testing the lines during work hours (maybe later,after hours, if necessary). It's the only way I can explain it's functioning unless I am missing something. Sound right?