Scheme A should work with Siemens SX1
Scheme B is an original x55 headset scheme
Scheme C is a noname generic x55 headset
This schemes should work with any Siemens phone? (schemes A,B,C, are compatible)
Scheme A should work with Siemens SX1
Scheme B is an original x55 headset scheme
Scheme C is a noname generic x55 headset
This schemes should work with any Siemens phone? (schemes A,B,C, are compatible)