I am using:
* Cisco 2851 (revision 53.51) with 765952K/20480K bytes of memory.
* CME Version 7.1
* CUE Software Version: 3.1.1
* Different favors of IP Phones CP-7942, CP-7937, CP7971.
IDD calls disconnects by itself at about 15 mins to any destinations (countries). Tried by calling to mobile phone, and overseas conference bridge at different countries.
However, there is no disconnect for local calls.
Anyone can help / advise?