We are examining replacing our Asterisk PBX server with MS Communications Server. We use Asterisk for the following reasons:
- VoIP telephony
- mass calling by streaming messages via SIP to our telecom carrier
- Voice Mail
- A critical feature is to have the server make 100,000+ telehone calls via SIP outbound messaging. and then delivering one pre-recorded voice message if the telephone is answered by a person and a different pre-recorded voice message if the telephone is answered by an answering machine.
We would really appreciate any practical guidance / tips for the same.