On Thu, Sep 14, 2017 at 04:34:22PM +0500, Жан Базаров wrote: Just like you'd normally use it! I don't get what the problem is you are experiencing and if there is a problem why it whould be relevant to ask that here instead of in the asterisk mailing list. It is asterisk that does the spy magic for any calls going through that asterisk, if there is more than 1 you need to check these machines. If you are trying to do this via the kamailio proxy, you could use other ports of prefixes to route to a specific backend.