This method includes the following steps:The H.323 net element judges that whether an error occurs on the 1st call path of the 1st soft switch device or on the 2nd call path of the 2nd soft switch device in the twin adscription. When the 1st path goes wrong and the 2nd does not, the H.323 net element sends the call message to the 2nd soft switch via the 2nd call path. Base on the method mentioned,this invention also offers a device communicating between the H.323 net element and the twin adscription. This invention can check out faults on the call paths from the H.323 net element to the softswitch timely. This can avoid effectively the problem of the overtime call waiting or call establishing failure during the net element sends the call message. These save the resource and raise customer's taste.