AES error message - request to switch timed out

[dalessandrelli]

Any information regarding the following error messages and solutions ?
Thanks

10:20:49 ERROR:WARNING:TSAPI:g3pderr:E_WARNING:L 502:C 2:[AAOMAP.CPP]: DCAAO request C_3PANS to switch timed out aaoID 61529548.
10:20:49 ERROR:WARNING:TSAPI:g3pderr:E_WARNING:L 553:C 1853:[DCASAI.CPP:61529548]: Send asaimsg 3PANS to switch timeout.