i have the intention to develop same nice add on Hardware modules for the iPhone & IPod touch .Therefore i need same info about the 30 pin connector

does anybody has infos ?
1. if the connector still have the same Pinout than describe here ?

2. i like to use the serial Port at
PIN 12
PIN 13
PIN 15
- how could i get access to the serial Port ?
- what will be the max bound speed i can get ?