we got 2 sites, say Site A & site B. On site A, our CM is located [4.1(3)] and the site B is connected to it w/ only srst.
Now when the user is having a conversation bet Sites that reach 1 hour or more, the voice quality is becoming garble (like robot). But when the call is w/in the site, no issue on quality even if it's longer.
We are using cisco 3845 (A) & 3825 (B) & using G.729 bet sites. W/in sites, G.711 is used.
Any related bugs, QOS for 3845/3825, or ideas?