Deploy a Small Asterisk PBX System using AsteriskNOW

The work consist in: Specify a board to use on HP Microserver G7 with 2 FXO and 2 FXS Specify a version of AsteriskNOW to Deploy I will use the ISO image to deploy to server. Using my PC with TeamViewer, you have access to Asterisk server. Configure AsteriskNOW with FreePBX to: Two (2) PSTN Lines (FXO) Two (2) Extensions (FSX) We would like that in case of Internet or Power fault, the PSTN lines route to FSX extensions Six (6) Extensions using Softphones on Windows and Android One (1) Extension using Ealink SIP-T21P Two (2) SIP Trunk services (i apreciate if you can recommend one) Configure outgoing routes to use the better phone costs on SIP Trunks. During the Work Hour, incoming phone calls on PSTN must play a Welcome Message and ring in some extensions at same time. In case of none of these extensions answer, ring another group of extensions. Out of Work Hour, incoming phone calls on PSTN must ring on another group of extensions (24 hour shift group) Record ALL incomming and outgoing calls One OPTION to discuss. We have a Microsoft SQL Database with one Table of Customers with 24 hour service. Will be nice that when out of work hour, the Asterisk ask the caller to put the Contract Number and compare this number with SQL table. If the number exist, foward the call to extensions of 24 hour shift group. If not exist, play a massage and disconect. We are in Brazil. So, is nice if you speek Portuguese.