   Ericsson Accessory Connector Pin-outs

1       Audio input
2       +5V=External Power, 0V=Battery
3       PA Speaker control
4       Audio Ground
5       Audio Output
6       Power-on indicator 
7       Charger control
8       Digital/DC GND
9       0V=normal,+5V=test, +12V=test+flash
10      hangup signal
11      TTL serial input
12      TTL serial output
13      Power Toggle (hold low 1 second)
14      DC Power supply IN
