VoIP over wireless link

[maller]

I'm considering to configure a wireless link (about 1,5Km) for VoIP use. Which is the bandwidth required for this use?

Thanks

[will.shaw]

I'm presuming from the distance that your using a wireless site-to-site bridge, that you want to run VoIP over.

How many calls are you expecting to concurrently run over the link and what protocol will you be using for voice (eg Q931 etc)?

Will any other traffic be using the link, such as IP phone services, extension mobility etc?