What Is SBC? Sintel Turnkey SBC Services
Sintel offers turnkey solutions for session border controller (SBC) solutions for IP-based audio and video traffic security and control, including analysis, installation, and operational support; cloud SBC services are also available.
What is SBC?
Session Border Controller (SBC) is a security and control layer positioned at the boundary between two networks for IP-based voice and video traffic. When connecting your corporate PBX to the operator, your call center to the cloud platform, or your network to another operator; it monitors, transforms, and protects signaling (SIP) and media (RTP).
A firewall "passes" SIP traffic; SBC, on the other hand, interprets it. The key difference is whether a single misconfiguration could turn into international call traffic reflected on your monthly bill.
Why is SBC necessary?
- Protection against toll fraud and attacks. SIP scans, registration attacks, and DoS attempts are stopped at the network boundary; suspicious call patterns are blocked based on rules.
- Topology hiding. Your internal network addresses, PBX brand, and numbering plan remain invisible to the other side.
- Interoperability. Different manufacturers' SIP interpretations may not match. SBC ensures compatibility through header manipulation and transcoding.
- Quality of Service and measurement. Call quality metrics, registrations, and reports are collected from a single point.
- Redundancy. Calls are maintained even if a connection drops, thanks to operator or site-based routing.
Sintel’s approach: turnkey solution
Sintel positions SBC not as a box product but as a delivered operational solution. Scope:
- Analysis and design — ascertaining existing PBX, operator connections, session needs, and redundancy scenarios
- Licensing — selecting the right manufacturer and the appropriate number of sessions based on needs
- Installation and integration — SIP trunk definitions, routing rules, security policies
- Testing and commissioning — end-to-end verification of call scenarios
- Operational support — monitoring, version management, incident handling
Supported platforms
| Platform | Usage area |
|---|---|
| Ribbon | Enterprise and operator class SBC; certified integration with cloud communication platforms |
| TelcoBridges ProSBC | High-capacity operator scenarios; 1+1 Master/Standby redundancy architecture |
| Mediatrix (Media5) | Branch and hybrid setups requiring analog/ISDN transition |
Sintel is the long-standing local partner of these manufacturers in Turkey; licensing, versioning, and support processes are directly handled through the manufacturer.
Cloud SBC (SBC-as-a-Service)
We offer SBC in a service model for organizations who do not want to invest in hardware:
- Geo-redundant setup with primary Istanbul and secondary Ankara
- Scalable session-based capacity with monthly subscription
- Certified intermediary for Turkish operator connection of cloud call center platforms (e.g., Genesys Cloud)
- Installation, monitoring, and maintenance handled by Sintel
This model is especially preferred by organizations transitioning to cloud call centers but needing to retain their numbers and relationships with local operators.
Typical usage scenarios
- Corporate PBX – operator connection: Secure termination of SIP trunk
- Cloud call center migration: Moving local numbers to the cloud platform
- Operator-to-operator connection: Normalization of signaling and capacity control in wholesale voice traffic
- Public sector modernization: Moving existing analog/ISDN lines to IP, preserving numbering plans
- Multi-location setups: Connecting branches to centralized routing and security policies
Working with the operator side
Sintel’s expertise in solutions, combined with group company Karel İletişim's BTK-licensed fixed telephone and internet operator services, allows number assignment, SIP trunking, and SBC layer to be managed from a single provider. The benefit for organizations is having one accountable partner instead of coordinating with three different suppliers.
How to start?
Share your current PBX brand, simultaneous call capacity needs, and number of operator connections; we’ll prepare a proposal with a suitable architecture and session count.