The 82 type connecting block is not designed for the 830/2830. You need to install the system exactly like the diagram in the BSP on pages 3 and 4.
The 565 series phones have 5 PU keys, using 2.5 pairs each. Add an A ground, a pair for the buzzer, and a pair for the ringer, and you have 30 conductors, leaving 20 spares. Some of these spares are brought out and used in the 82-type adapter.
In an 830/2830, all 50 leads are used. 9 PU keys, times 2.5 pairs = 45 leads. Add the A ground, the buzzer pair and the ringer pair, and you have used all 50 leads. Therefore, you need to provide the extra speakerphone leads with the cord that comes with the 228 adapter.
