New asterisk 1.7 install and cisco spa 504g phones


I have an asterisk new installation ans two cisco spa 504g phones.

I´m going to purchased more ip phones and a isdn epygi device.

Four isdn lines connected to this device and then lan to the asterisk pbx.No ip voice with the external world, only ip with 10… 12 ip lan connected phones.

I´m so newbie and the voip companies here are very bad. Phones arrived today and spent all day configuring the phones in order to stablish a lan phone call between 2 of them…no success.

any idea?

cisco phones have a loooot of parameter to configure!!!

Usin asterisk 1.7 and freepbx 2.8.