No it's all about G.711 fax, I know the 2nd INVITE is superfluous, but it's impossible make the provider omit it.
Do I need to use T.38 fax instead? Will it help?
No it's all about G.711 fax, I know the 2nd INVITE is superfluous, but it's impossible make the provider omit it.
Do I need to use T.38 fax instead? Will it help?