How do I call a Skype User when I can only dial numbers on my phone?
You can add mappings to SkypeOutDialingRules.props or if using a PBX, you can map them there. If your Skype client has speed dial, you can map numbers to users there also. To use the built in mapping features add patterns to SkypeOutDialingRules.props like this:

^([1-9][0-9]{6})$:+1561$1
^([1-9][0-9]{9})$:+1$1
^([0-9]{7,})$:+$1
^50$:skypeusertocall1
^51$:skypeusertocall2
^52$:skypeusertocall3
^53$:skypeusertocall4

The first 3 lines handle SkypeOut calls using standard U.S. style 7, 10 and 11 digit and International dialing. Change the 1st line's area code as needed. The rest of the lines perform number to Skype User translations.

第一、是不知道siptosis的trunk有沒有註冊上，（不知道如此在Elastix內查看）

第二、確定了第一後，我以上的用Custom Extension的方法設置不知道對不對。