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Trial Results Only difference between ENUM and Non-ENUM softswitch is the location where call routing information stored Delay time can be a issue for performance “Answer Delay Time” defined as elapsed time between requesting a call('INVITE') and receiving a response('200OK’) There is little difference in time(under a sec) between ENUM and Non-ENUM case. Therefore a caller of each carrier is hard to recognize the difference as aspect of quality when a call initiates. Answer Delay Time (sec) |