I have changed the outbound routes to use the Telkom (POTS)(DAHDI/g0) on freepbx and not g1 (voip)(DAHDI/g1) however when I dial it is still using voip .
Look in the log files and see what is happening when going to that trunk.
You aren’t giving much data here to help.
Is your route sequence for that outbound route the land line first and sip second?
g1 is never voip it is always either an extant dahdi TDM/analog trunk or just not there, your voip trunks are otherwise named, you need to RTFM again 