Billing System for Asterisk

Hello, we are looking for an expart who will be able to develope a billing system which will work with asterisk. We will use two asterisk server to optimization or redece internet bandwidth consumption for voip call termination. The billing system should contain following options  Admin level  Level 2 Reseller  Level 1 Reseller After login all these three level including Admin, Reseller level2 and Reseller level1 should show a dashboard, where will show summary of call informatiom. Like active calls, ACD and ASR for today 1. Admin level should have following options  Active call  Reseller level 2  Reports • Active calls i. Call sl no. ii. Caller id iii. Reseller name iv. Destination name v. Dialed number vi. Duration vii. Call status can be either 1. Dialing 2. Ringing 3. Connected • Reseller level 2 I. add reseller II. modify reseller III. active/inactive reseller IV. call limit • reports I. Call report II. advanced serch option for details call report 2. Reseller level 2 should have the following options  Active call  Client  Tariff  Add gateway  Reseller level 1  Report • Active calls I. Call sl no. II. Caller id III. Reseller name IV. Destination name V. Dialed number VI. Duration viii. Call status can be either 1. Dialing 2. Ringing 3. Connected • Client I. Clients server ip. This ip will send call to asterisk and this ip will use to create sip trunk II. Sip port III. Call limit IV. Client tariff V. Activeinactive client VI. Add and return fund VII. Add and return fund history • Tariff I. Add new tariff II. Add destination III. Add dialing prefix IV. Add call rate V. Billing cycle • Gateway I. gateway mac address. It will be as user name and password to create iax2 trunk. II. call limit III. digit to bedd added before send call IV. digit to be strip before send a call • Reseller level 1 I. add reseller II. modify reseller III. active/inactive reseller IV. add fund/ return fund V. fund add and return history VI. assign traffic VII. call limit VIII. enable or disable to add traffic on client level • reports I. call report II. advanced serch option for details call report 3. Reseller level 1 should have the following options  Active call  Client  Tariff  Add gateway  Report • Active calls I. Call sl no. II. Caller id III. Reseller name IV. Destination name V. Dialed number VI. Duration VII. Call status can be either VIII. Dialing IX. Ringing X. Connected • Client I. Clients server ip. This ip will send call to asterisk and this ip will use to create sip trunk II. Sip port III. Call limit IV. Client tariff V. Activeinactive client VI. Add and return fund VII. Add and return fund history • Tariff I. Add new tariff II. Add destination III. Add dialing prefix IV. Add call rate V. Billing cycle • Gateway V. gateway mac address. It will be as user name and password to create iax2 trunk. VI. call limit VII. digit to bedd added before send call VIII. digit to be strip before send a call • reports III. call report IV. advanced serch option for details call report