Outbound Asterisk 1.6.2.7 with SPA400 1.1.22

hello Dears,

I want to make a small test at home with my Asterisk 1.6.2.7 and a Linksys SPA 400. But the configuration I made for Outbound calls to PSTN didn’t work. My Asterisk is registered to SPA400 but I cannot make any call from softphones to PSTN.
I received the error message below on CLI>

Unable to crate channel of type ‘DAHDI’ (cause 66 - Channel not implemented)

Do any on have an idea about what can be the Pb? If someone knows a clear and complete tutorial for configuring outbound calls from Asterisk to PSTN via SPA 400, please share it with me? Thanks in advance.

Best Regards