[Asterisk-Users] Asterisk ---- SER ----- GAteway and Reinvite

[Marcello Lupo]

Hi,
i'm using * with SER and a cisco 3725 as Gateway.
I noticed that the reinvite is not working if i use SER and if i don't use IT 
(*---->Gateway) the reivite works so the * server is able to let the RTP 
direct from gateway to SIP Clients.
Do you know in which way can i let it work with the SER too.
Becouse i need SER to manage other VOIP communities but if i'm not able to use 
the reinvite i don't have the T38 fax support. As i understood asterisk lack 
the T38 support for the moment.
As you know there is any T38 fax support in Grandstream HT286/486?
Thanks for you help,
Bye,
Marcello