On Oct 29, 2010 at 05:37, Alex Balashov <abalashov at evaristesys.com> wrote: > Does tm.t_uac_wait RPC call block a worker process while waiting for > a reply, or use some sort of asynchronous callback? It uses an async. callback, but it will work only over xmlrpc (it does not work yet with the binary rpc transport). Andrei