If your enterprise wants to reduce up to 75% of its current telephony costs, it can do that by implementing VoIP and SIP trunking services—but you’ll first need a session border controller (SBC) to start saving. SBCs help enterprises secure SIP trunking services at their network border and provide a more seamless flow of SIP-based media for UC deployments. The enterprise-side SBC is responsible for network security, session routing, network bandwidth optimization and interoperability between different devices within the enterprise network such as PBXs and IVR systems. According to Infonetics, the enterprise SBC market will grow over 40% to more than $218 million in 2012, and another 40% in 2013.
Why Sonus SBCs for SIP Trunking?
Sonus SBC Enterprise solutions deliver:
- Strong network security against potential SIP-based threats including denial-of-service (DoS) attacks, toll fraud and information theft;
- Both media and signaling encryption to ensure private communications over public networks such as the Internet, wireless hotspots, etc
- Media transcoding to reduce network congestion and improve voice quality
- Advanced call routing and policy services that can reduce toll fees and improve call center customer service
- Interoperability with other SIP-based and legacy network devices including SBCs, PBXs, IVRs through industry-standards support (e.g., SIPconnect) and SIP Message Manipulation
PRI Trunking vs. SIP Trunking:
| PRI Trunks | SIP Trunks |
|---|---|
| 23 channels/sessions per trunk | Up to 10,000 sessions per trunk |
| $57.60 per channel per month with 870 LD minutes* | $41.40 per session per month with 870 off-network minutes* |
| Direct Inward Dialing, usually from local destinations only | Direct Inward Dialing available from long-distance destinations |
| Dedicated PRI connections for each branch/office | One SIP connection for the entire enterprise |
| Legacy media and signaling (TDM/ISUP) | Next-generation media and signaling (RTP/SIP) |
Typical Topologies for Enterprises Moving to Next Gen:
| SBC Security Feature | Benefit to Enterprises |
|---|---|
| DoS/DDoS Prevention | Blocks attackers from taking down the network |
| Topology Hiding | “Hides” IP devices in the network from attackers |
| Rogue RTP Protection | Prevents thieves from stealing long-distance service |
| Media Encryption | Keeps private communications private |
| Signaling Encryption | Ensures only authorized users send/receive communications |
| NAT Traversal | Enables SIP sessions with NAT-protected devices |
