What 's the exact meaning "notransfer" in iax.conf

what’s exact meaning of “notransfer” in iax.conf? suppose i have two iaxclient and if i set notransfer = yes then the voice media will not through
and transfer directly between the two iaxclients?if the iaxclients behind nat who charge with hole punching?

is anyone can help me?looking forward for reply.TQ in advance

My understanding is that notransfer is about whether or not two clients can talk to each other and bypass the asterisk server or not. So notransfer=yes would mean they can’t and notransfer=no would mean they can.

Have a read of voip-info.org/tiki-index.php?page=Asterisk