Asterisk sip trunk

hi there,

im posting here first time, i have setup asterisk with free pbx gui, i have extentions setup etc… i have also written some apps using dial plan, just need some help on making inbound or outbound call.

Q) is there any service provider which will make me test inbound call for free into my asterisk server?
Q) any cheap asterisk trunk provider who will make me test my dial plan application on outbound call?

any help or suggestions is appreciated. thanks