Fax Voip

Hi there,
I've got a VoIP gateway ( AudioCodes mediant 2000 ), Whit this gateway i already make voip calls.
I need to send fax by using this gateway, is this possible ?

I tought that there are 2 methods to send a Fax on Internet :

1) by using FoIP ( Fax Over IP ) but this method needs the the receiver too has the FoIP Gateway.

2) an other way is sending fax using VoIP and streaming the fax coded with codec g.711 to a fax number.

is there some one who can help me?
thank You all,
Regards,
Marco.

I've sent Fax over VoIP by just connecting a Fax modem to the POTS line coming from the VoIP modem.