... at ranges longer than any copper modem can achieve. GQ7003 V.35 fiber optic modem supports different fiber optic ... interoperate over GQ7001 E1 fiber optic modemThe Image of GQ7003 FeaturesProvide fiber link for LAN applicationsUp to 100Km transmission ... Swappable3years warranty Typical Application Digram of GQ7003 Typcial Application 1 Digram of GQ7003 Fiber Optic Modem Typcial Application 2 ...