I have installed issabel successfully and configured extension and call center agents. When i create a campaign and upload csv the dialer dials properly but after some time it just stops and no outgoing calls are being made. The campaign status still shows as active. If i login to the asterisk cli mode using asterisk -rvvvv there is no activity shown in real time. I have also tried restarting asterisk, stoping and starting the dialer from the configuration pane but nothin seems to work. Please guide me regarding this problem.