MÁLAGA, Spain--(BUSINESS WIRE)-- #5G--Adtran today announced its participation in OIF's live multi-vendor interoperability demo at ECOC 2026, taking place September 21 to 23 in Málaga, Spain. Bringing together 39 member companies, the showcase highlights interoperable optical transport, pluggable coherent transceivers and network control technologies in a multi-vendor environment. Adtran is contributing 100Gbit/s, 400Gbit/s and 800Gbit/s ZR+ pluggables, its FSP 3000 open line system (OLS) operating a.