gave a quick look on the logs I saw Cause code 47 which is "No Resources" It can usually be traced to either a lack of DSP resources, channels, or more often than not a codec issue in terms media negotiation is getting failed..
Reason cause code
Call Entry(Disconnect Cause=47,:
as you said "Call from Cisco to Avaya works fine however you make a call from Avaya to Cisco it Fails".
1) Can you please check what codec is being for working call?
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