What do you mean by "trunk capacity"? The number of calls which may be sent to a certain gateway concurrently? If yes - you can't configure this in ser. ser is is transaction statefull, thus it does not count calls at all. Usually you just send the call to the gateway, and if the gateway is busy it will reponse with a certain response code. Then you configure ser to activate a failure to another gateway. regards klaus roayu wrote: