Not every telco initiative related to next-generation networks actually comes to fruition. Most today do not remember that integrated services digital network was once the expected NGN. That was replaced by aynchronous transfer mode, which was expected to underpin the telco next-generation network.
That never happened at scale, either, as the global industry shifted to adopt the preferred computer networking protocol, TCP/IP.
These days, though some key “proprietary” protocols and platforms continue to be key for connectivity providers, telco networks are becoming computer networks at their core, which means modern computing network principles and cloud-native approaches have grown in importance.
Consider IP Multimedia Subsystem. One never hears much about it anymore, though IMS was considered a key method for transitioning from legacy TDM to IP-based services, especially for mobile services.
But IMS eventually was abandoned for “voice over LTE” protocols, which are based on IMS architectural principles. IMS was eventually considered too complex, with adoption that was too slow.
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