We have a HDX 7000 system and are located in the US. One of the customers we conference with also has a HDX 7000, they are located in another country. We have had several video conferences with them in the past (about once a month or so) with no problems.
This morning when we called their system it would ring about 4 times and then hang up with the message that the call was disconnected. When they called us the system would ring but we were unable to answer the call.
No changes have been made to the video system on our side or to our firewall since the last video conference (which went without a problem). Neither side has someone well versed in this system. Does anyone have any thoughts on what to look for?