from early versions to the newest EHX 12.2, field testing that, if customer have manually import the SDP of RX steam . plase follow this rule:

the RX SDP needs to have unique session ID.,

The 'o' field and the 's' field should be unique in the SDP

The same session ID may cause the stream can’t be decoded and event logs show error message:TIME OUT-BACH respones is slow

Check : the SDP viewer--cofigured -Rx

Manual moidification from the AoIP SDP editor window: