SAP - Mobile phone interface (urgent)

Hi Champs,

Can you pls throw some light -

Our client want to capture sales data like quotations or sales orders from field Sales employees via their mobile phones.

Which SAP solution / process is best for this ???

Also suggest about the resource requirements / infrastructure required for this.

Kindly forward some documentation or links which can help me to rajeshdangle1979@indiatimes.com

Also tell about the infrastructure requirement , land scape

Regards

Rajesh