Hi ,
this is standart cable.TSR 902 0459.
NIU to Com Port in PC
1/4 ERICSSON CON. 9 PIN FEMALE
A1 B1 C1 3 2 NC
A3 B3 C3 5 5 5
A5 B5 C5 NC 7 4
A7 B7 C7 4 8 6
Hi ksane ,
Only System telephone with handsfree function.
no anolog telephone support.
I thing maybe with electronic circuit.
4*1N4001 diyode + capasitor and 24V DC Role
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