ss7 loopBack using Digium TE420

Hi Friends,

Need your urgent help,

I wanna setup SS7 loopback from Port1 to Port4 of Digium TE420 on Single PC machine.

the package i am using is:
asterisk-1.8.0
dahdi-linux-complete-2.6.1
chan_ss7-2.1.0

Please share supporting configuration file/URL if anyone had done this before.

Thanks in Advance