Sony Ericsson Cordless bluetooth headset Telephone headsets connect to a hard and fast-line telephone system. A telephone headset capabilities by changing the handset of the telephone. Headsets for normal corded telephones are fitted with a standard 4P4C generally called an RJ-9 connector. The same as SoundBot SB510 that we Beforehand https://tonyl169hra5.blogsmine.com/profile