ckleea

Use HTTP digest is the best.

現在我用的方法是

經asterisk ， 用 HTTP digest，而且可以因應唔同 users, 設定唔同 dial plan through different authentization ，還可以設定唔同 outgoing dialing rule

而 PSTN dial into the SPA3000, 我就用 Pin

ckleea

Have a look at this link

http://www.freepbx.org/support/d ... ra-spa-3000-freepbx