I gave try almost all posting to make it work as FXO gateway but failed. Currently using 2nd option with Pbxes Subpbxes configuration in following post.
http://www.obihai.com/docs/OBi-VoIP-Device-Attach-Legacy-IP-Phone-Workbook-v1-0.pdf
I am able to recvie call on Snom IP Phone, but can not dial out. Siplog indcates number passed out to Obi202 but obi202 can not dialout via PSTN line.
Any suggestion to get through.