![]() ![]() When trying to make a call a message is showed:Įrror: "Unable to open sound device: Undefined external error. This can help when SIP service configured not the best way. Try to add " hide" suffix to SIP proxy, example " hide". "Internal server error" or similar error. Some SIP providers require that you enable the STUN server if your PC does not have a public IP address. The proxy and login are often empty, but you must specify them if required by your SIP provider. You can also try spoofing the user agent string in the ini file.Įrror: "Forbidden", "Incorrect password" or similar.Ĭheck your SIP server, domain, username, password. Make sure you have entered correct "SIP server", "SIP proxy" (if needed), "Transport". ![]() "Service unavailable", "bad gateway" or similar error. Username, login, password and domain are also used in registration.Īfter successful registration, you will see a green icon and the status "Online" in statusbar. If you leave the SIP server empty, you can make calls but not be able to receive. To do this, you must specify the SIP server. Jim Anderson is connected with the University of Minnesota onsite wastewater treatment education program, is an emeritus professor in the university’s Department of Soil Water and Climate, and education coordinator for the National Association of Wastewater Technicians.Registration is required to receive incoming calls. You can blow air under the bell, drain the tank to a level below the open end of the vent pipe, or lift the siphon up in the tank so air goes under the bell (for 2- to 3-inch siphons).įor a complete list of alarms, controls and monitoring devices, visit About the Author It’s relatively simple to fix the trickling problem as long as the siphon is easily accessible. If the water level is high when they leave, air can diffuse into the effluent over time, which reduces the air volume and causes trickling. These include lake homes, vacation cabins or snow birds that leave the north for warmer climates. If this is not possible, you might need to add more baffling to solve the problem.Īnother situation that can cause problems with siphon operation is when a home is intermittently occupied. In houses where this type of use is likely to occur, adding a second dosing tank might be necessary to mitigate the flow. This causes the siphon to burp and then trickle. Think large discharges at one time from the second floor of a house into the tank with the siphon. During high flows, air is carried with the flow. This can happen where the vent pipe screws into the top of the bell. First, there might be an air leak from the bell. Loss of prime can occur for a number of reasons. Another recommendation is to install a high-water alarm that indicates if water is not leaving the tank. You should check cycle counters at least once a month, which means you should have a maintenance agreement with the homeowner for ongoing service. Since the dose is not being delivered, the cycle counter will not indicate that a dose has occurred, so you can check the cycle counter numbers to determine when the siphon is not operating properly and proceed to fixing the problem. If the siphon is trickling, the liquid level is never high enough to trip the float. This is why having a cycle counter to monitor flow is a good idea.Ī common method to install a cycle counter is to use a float switch attached to a battery-operated digital cycle counter. Lack of air volume under the bell means the liquid level will not achieve the necessary head to drive the effluent into the distribution system. When a siphon loses its prime, there is a loss of air pressure under the bell. Depending on the application this can result in the effluent not being distributed properly. This is called a trickling siphon or a siphon that has lost its prime. The most common problem you’ll find is the siphon trickling or leaking effluent rather than providing the expected dose. Since siphons do not have moving parts, there aren’t very many structural issues that can go wrong, but it’s important to inspect them regularly to ensure proper operation. Get Septic Tanks articles, news and videos right in your inbox! Sign up now.
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