Install an Asterisk 1.6 or higher application on a server in order to act as a standalone voicemail.
The current SIP Proxy is a Brekeke. The call will be sent to the CPE (currently Mediatrix 4124) if not answer the CPE will return a 302 movetemp to the SIP Proxy that will reinvite the call to the proper voicemail box on the Asterisk.
The CPE will use subscribe method in order to obtain MWI (Message Waiting Indicator) from the Asterisk.
The voicemail box must be in French and English.
The system must support at least 500 voicemail box
Security must be taken into account when designing the system
The developper will be requested to create 5 voicemail box and shall provide training on how to create more voicemail box to actual IT Staff.