All the major equipment vendors are pinning high hopes on 5G to kickstart revenue revival, of course, but Ericsson is the one for which success is most critical, since it has backed away from alternative growth areas like enterprise networks. Nevertheless, it may have been premature to launch a salvo across the bows of Nokia and Huawei, claiming to be more 5G-ready than they are – and provoking an angry response. Ericsson’s claims rest on its Ericsson Radio System (ERS), which claims to be “software upgradeable” to 5G when that becomes available. ERS currently accounts for about 55% of Ericsson’s radio shipments, and that figure should reach 100% next year. Arun Bansal, head of Ericsson’s business in Europe and Latin…