Needed help for fax use :)

Hi, I’ve a problem with asterisk.

I don’t know how to use the t.38 protocol for the using of my fax (who want’s to be connected with the asterisk server).

My architetcture is :

ISDN Card -> Asterisk Server -> Gateway Grandstream GW4004 -> FAX

How I Can and where I must configure the server and the gateway to send and recieve faxes via asterisk? :smiley:

thank you very much :smile:

p.s : i’ve read at, but it hasn’t helped me :smile: