Did anybody has implemented SLA on Asterisk 1.4

Then please give the sample conf files. Following through the documentation on Digium. I managed to configure line1 and line2 for my Wildcard TDM400 and the incoming calls also creates pseudo-meetme SLATrunk_line1. But the phone configuration is ambiguous.

Where I have to specify the phone configuration, I have done hints for (station1_line1) on Elmeg phone function keys and I have also tried configuring one of the sip extension with the channel as SIP/station1. But none of them work and the phone doesn't ring or dial out.

Please please help me make this configuration working.