Network system and communication device

摘要

A network system (10) may include a first communication device (20, 40, 60), a second communication device (120, 220) composed separately from the first communication device (20, 40, 60) and an address database (81, 202, 236). The first communication device (20, 40, 60) may include a first access device (32). The first access device (32) may be capable of accessing a network address. The address database (81, 202, 236) may store the network address accessed by the first access device (32). The second communication device (120, 220) may include a telephone device (128, 228), an address acquisition device (132, 232) and a second access device (132, 232). The address acquisition device (132, 232) may acquire the network address from the address database (81, 202, 236) in a case where the telephone device (128, 228) receives an incoming call. The second access device (132, 232) may be capable of accessing the network address acquired by the address acquisition device (132, 232).