Calling card and IVR solutions for prisons

The customer is a Canadian IT company, and our task was to develop an IVR Solution for a jail/prison system in Canada. The Asterisk will act as a PSTN gateway with a T1 card (24 lines) and receive SIP calls. It will handle at least 96 simultaneous calls over the 4 T1 ports (24*4). The application should integrate with the database (MSSQL Server). This IVR system offers a cost effective and money saving way of handling customer calls 24x7

Interesting features include:
- PIN Number Validation
- Restricted list / Time Restricted List ( eg. lawyers - which doesn't take the calls during certain days and time) need to be configured in the database and tracked accordingly.
- Calling card billing configuration and synchronization with Asterisk along with the Pegging solutions defined in the requirement document.
- Call Timing limit

Implemented technologies:
- LAMP (CentOS 5.2 as the server)
- Asterisk 1.6.0.6
- SANGOMA A104E (4 PORT T1 or 96 voice circuits)
- Eyebeam / Xlite / SIP Phone