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VoIP How to: Voice reinjection: Difference between revisions
Describe what to remove
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These modifications need some degree of technical know-how, and you might need to consult someone
if you feel you don't have that know-how.
* Gently unclip the 4 plastic clips which retain the inner white plastic part of the VDSL SSFP from the outer shell, and lift the inner part out. Try to pull straight, as the metal pins of the telephone plug are attached to the circuit board and could be damaged if handled roughly
[[ File: VDSL_SSFP_dismantled.jpg]]
* Two components need to be removed, and it's recommended to remove a third one. The components to remove are labelled PS1 and PS2 on the circuit board - they may be orange in colour, and can be removed by unsoldering or mechanical destruction. It's optional to remove the resistor labelled R6, the VDSL SSFP doesn't use the bell capacitor in the NTE5c - it provides its own bell capacitor (labelled C8). R6 connects the bell capacitor to the telephone socket, but we're now using the telephone socket as an input from the ATA and so R6 isn't needed and might cause confusion.
[[ File: VDSL_SSFP_pcb.jpg|thumb]]
One can now simply connect the ATA phone socket to the phone socket on the VDSL SSFP with an RJ11 plug to BT phone plug lead. It doesn't need to provide a bell capacitor. A lead from an old modem (pre broadband) may be ideal.
[[Category:VoIP How to]]
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