# FAX Over IP Support - About the Default Settings

The system defaults FAX signalling to

- FAX Relay (T.38) protocol at V29, 7200 bps between FAX zones (Inter-zone)

- G.711 pass through within the same zone (Intra-zone Profile 1).

The default settings should be sufficient for most site configurations. To modify the default settings, see

- Collect Site Information

- Configure FAX Over IP Support