Voice service provider (VSP) from Open Source components. Eight server minimum includes dedicated and hot standby servers for: Voice (x4), Database (x2), Backup(x2). We use the following GUI's: Opensips-cp, A2billing, and FreePBX.

• Opensips for registration and load balancing
• RTPproxy for voice
• Asterisk provides media services, voicemail, SS7 trunking, MOH, IVR
• Mysql Replication

All servers need to be in one location. Geographic redundancy available with another 8 servers in a separate location.

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