QPJ42 - TRUNK BUFFER 2
Directs call control signals affecting the assignment of supervisory tones and switching signals to the appropriate circuit pack. Also contains drive circuitry for three trunk group busy lamps.
![](qpj42front.jpg)
![](qpj42back.jpg)
Directs call control signals affecting the assignment of supervisory tones and switching signals to the appropriate circuit pack. Also contains drive circuitry for three trunk group busy lamps.