I have a switchvox AA350 SMB server in my organization which I run. Recently I aquired analog lines for external calls. I put two of the lines into the switchvox (the server came with a four port anolg card)I configured the lines and I was able to make calls through my SIP phones.Yesterday I came to office put on the switchvox ,everything came up tried to make external calls but it wont go. I checked the analog ports where I plugged the external lines to and I found out that the green indicators blinking by the side of the ports are no longer on.What do I do now to able to use my switchvox to make external calls?