Telephony is the lifeblood of the telecom industry. But that blood has been getting thinner in recent years, as alternative modes of communication, as well as Internet-based providers of basic calling-type services, have grown at the expense of ordinary phone minutes.
And while mobile telephony has extended communications to billions around the world, it has recently faced an
additional challenge. The arrival of 4G and all-IP connectivity has prompted a replacement of legacy circuit-telephony infrastructure with VoIP, and specifically VoLTE. This has been a complex transition and is still ongoing.
But simply replacing old phone networks with newer IP based ones is not enough.