Sipsorcery local 安裝後電話無法撥出

被Sipsorcery的宕機逼得裝local版了, 照著說明做了, 結果電話打不出去. 現有如下問題請教. Thanks in advance!

Q1. 安裝說明第4條"4. Edit the sipdomains.xml file and set the domain value to the hostname or IP address that your SIP user agents will be accessing the host running the SIPSorcery application,"

PC在內網, 好像沒有設置domain, 如何填寫domain呢, 是本機名字或IP? 如果用IP, 是內網IP, 還是用localhost, 或者127.0.0.1?

Q2. 安裝Sipsorcery 1.1後, router上的port forwarding是否要修改? 目前是forward 到ATA.

Q3. 目前電話無法撥出, Console裏的錯誤信息是:
Exception GoogleVoiceCall Login. Could not find _rnr_se key on your Google Voice account page, callback cannot proceed.