how to specify the name property using knockout js

I have a bound list using knockoutjs / mvc3

<div data-bind="foreach: phones">
   <input data-bind='value: number' />
</div>

to send this to my controller action which is

[HttpPost]
public ActionResult Index([Deserialize] WizardModel wizard, IStepViewModel step)
{
}

Previously I was able to bind to my List< T > using Jquery by specifying the name on the input which would be

 <input name="Phones[0].Name"
              Phones[1].Number etc..

But I'm now im using knockout I'm not clear how this should work. Anyone steer me in the right direction.

Ta