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Session Border Controller
The foundation for carrier interconnect success
The foundation of our Carrier Platform is the VoIP Peering Session Border Controller (SBC), a high availability, high performance and high capacity server supporting SIP, SIP-T and H.323 signaling.
With its signalling inter-working and dynamic transcoding capabilities, DIGITALK’s VoIP Peering SBC enables service providers to integrate flexibly with new customers and suppliers to maximise both revenue opportunities and margins.
Carrier interoperability
With a wide variety of VoIP carriers and wholesale service providers in the market, each running distinct switches and gateways, service providers need to be able to adapt to a variety of signalling and media options. The signalling inter-working and media transcoding capabilities of the DIGITALK Session Border Controller enable service providers to support a wide variety of carrier interconnects.Signalling inter-working
- Signalling protocol inter-working (SIP, SIP-T and H.323)
- Flexible SIP header manipulation
- Carrier tech prefix insertion / removal
- Configurable called and calling party address manipulation
- Retry call attempts based on configurable failure reason
Media transcoding
- Dynamic, scalable audio codec transcoding, including:
- G.711, G.723, G.726, G.728, G.729, GSM, iLBC
- DTMF interworking (RFC2833, Inband and SIP INFO)
- Video and fax relay (H.261, H.263, H.264 and T.38)
High availability and scalability
Service availability and growth are key to carriers and wholesale service providers, so the DIGITALK Session Border Controller offers the following high availability and scalability features:- Fully redundant architecture
- Live signalling session failover
- Live media failover
- Scalable from 500 to 50,000 concurrent signalling sessions
- Seamless media relay and transcoding scalability
Robust security
The DIGITALK Session Border Controller supports the features necessary to ensure carrier network protection:- DOS/DDOS detection
- IPSec
- Topology hiding
- Carrier hiding
- Malformed packet protection
- Rogue RTP protection
- TLS signalling
- Protocol validation
