Auto hang up hack Cisco SPA301

Difference between revisions from 2013/03/24 18:04 and 2013/03/24 18:01.
[http://remoteqth.com/img/wiki-spa301-1.jpg]
* remove the pcb board from ip phone

[http://remoteqth.com/img/wiki-spa301-2.jpg]
* decompose head hang up switch, and insulation

[http://remoteqth.com/img/wiki-spa301-3.png]
* apply circuit by [OK2ZAW|http://ok2zaw.blogspot.cz/] - any P-chanel Mosfet (IRLML6402PBF) and NPN transistors (2N2222A)
[http://remoteqth.com/img/wiki-spa301-4.jpg]
* now IP phone hang UP automaticaly after call.picks up the call automaticaly.


* 4p4c [Handset|http://en.wikipedia.org/wiki/Modular_connector#Handset_wiring]{{
  -------
 |    ---|  tp389  mic +2V
|     ---|  tp390  sp
|     ---|  tp391  sp
 |    ---|  tp392  mic GND
  -------
}}