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The Best Tandem Switch

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    Abdel
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    Hi guys,

    which is the most intelligent and powerful, carrier class tandem switch with the capability of automatic rerouting functions, fraud detection and call blocking, congestion and failure detections. So far I noticed that the most popular were the ESWD (Siemens), DMS-GPS/500(nortel), S12(Alcatel) but it seems that all these products are discontinoud. I am wondering which tandem switches have replaced them and I didn’t hear or read any, did they switched to VOIP in tandem switching or something else. I read that BT has upgraded its class 5 switches to NGN , a project they dubbed as 21CN, but I am not sure if the tandam includes? any ideas please because I am tired of poor capable tandem switches
    Thanks

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