Hello  I remember this time, when I was Technical Implementation Owner, for international "wan"... We created Permanent Virtual Circuit on Frame Relay protocol ... the X25 packet commutation protocol was almost over. It was a "small" revolution, the customers edge could have 64k PVC (and 128k too ? ) ! The price was expensive ... then the ADSL technology has appeared, it was an high (highest than Framerelay) broadband connection at a low price ... Then my job has been was outsourced to a low cost country 😉 And now I provide to my customer 1 Gbps connection ! Eric ... View more