Hi david55, thanks for your reply.
For the second question, and if i read the logs, i can see than OPTIONS are sent to the good address, the same than in the contact header
=> i’m in a lan and don’t have access to the gateway/firewall of the society but as i can’t see the OPTIONS on the peer, maybe i should suppose the connection is no more available or something like this. I can’t try with tcp (not implemented) but if so the connection would not leave in this case, right ?
For the 1st question does someone knows if early media is really available in nat context. As i don’t have the same network on the 2 peers and the sip server, i don’t know if i need to add a localnet/externaddr parameter and if so how.
I don’t think is it so unusual today (a sip phone call a smartphone throught a sip server Asterisk on Internet) but maybe early media is not so frequently used…