SwitchCenter Call Control and Firewall Traversal Server
In today's distributed enterprise, connecting users across different networks—from corporate headquarters and remote branches to home offices—presents a significant challenge. Firewalls and Network Address Translation (NAT) are essential for security but can block the real-time communication streams required for high-quality video conferencing and VoIP.
The Huawei SwitchCenter is a call control and firewall traversal server engineered to solve this problem. It acts as a central gatekeeper for all your H.323 and SIP-based communications, providing robust registration, authentication, and call routing. By seamlessly managing traffic across public and private networks, the SwitchCenter ensures that every call connects reliably and securely, regardless of user location.
The Huawei SwitchCenter is built on a versatile H.323/SIP dual-protocol stack, allowing it to manage a diverse ecosystem of video conferencing and VoIP endpoints. This dual-protocol capability ensures maximum interoperability in complex, multi-vendor environments, protecting existing technology investments while enabling future expansion. The system is designed for large-scale deployments, with the capacity to handle tens of thousands of registered users and thousands of concurrent calls.
At its core, the SwitchCenter leverages powerful, standards-based traversal protocols like H.460 and Interactive Connectivity Establishment (ICE) to navigate complex firewall and NAT scenarios. This ensures that media streams can pass securely between internal and external networks without compromising security policies. The Proxy SC model further enhances this capability with a high-throughput media proxy, enabling multi-carrier access and supporting up to 2,000 concurrent participants from external networks.
Selecting the right call control and traversal infrastructure is critical to the performance, security, and scalability of your unified communications platform. An incorrect configuration can lead to poor call quality, connectivity issues, and security vulnerabilities. NEXUS ITX helps organizations navigate these complexities by providing in-depth, requirements-led advisory for the Huawei SwitchCenter.
Our process focuses on understanding your unique operational environment and business objectives. We help you map your technical needs to the SwitchCenter's capabilities to ensure the solution aligns perfectly with your strategy for today and tomorrow.
Q: What is the main difference between the SwitchCenter SC and Proxy SC models?
A: The primary differences are performance and capacity. The standard SC model supports up to 20,000 registrations, 6,000 concurrent calls, and 600 Mbit/s of traversal throughput. The Proxy SC model scales this up significantly to 50,000 registrations, 2 Gbit/s of traversal throughput, and adds large-capacity media proxy capabilities for up to 2,000 external participants.
Q: How does the SwitchCenter handle communication across firewalls?
A: It uses a combination of standards-based protocols designed for this purpose, including H.460 for H.323 traversal and ICE (Interactive Connectivity Establishment), STUN, and TURN for SIP and modern traversal scenarios. This allows media and signaling to pass through NAT and firewalls securely and reliably.
Q: Can I use both H.323 and SIP video endpoints with the same SwitchCenter server?
A: Yes. The SwitchCenter features an H.323/SIP dual-protocol stack, allowing it to register, authenticate, and control calls for both types of endpoints simultaneously. This makes it an ideal solution for organizations with mixed-vendor or legacy communication hardware.
Q: Is a separate management platform required?
A: For centralized management, the SwitchCenter is designed to be managed via Huawei's Service Management Center (SMC). The SMC provides a unified interface for managing terminal address books, viewing user status, and allocating floating licenses across your network.
Q: Does the SwitchCenter support connections to external ITSPs or other UC platforms?
A: Yes, it supports SIP Trunk calls, which enables it to interconnect with other SIP-based systems, such as an IP-PBX or a public internet telephony service provider (ITSP) network.
Q: How can Nexus ITX help me determine if the SC or Proxy SC model is right for my organization?
A: Nexus ITX can help you evaluate your specific technical requirements. By analyzing your current and projected user counts, expected concurrent call volumes, and network throughput needs, we can help you compare the models and align the right configuration with your business objectives.
Contact us to discuss your call control and firewall traversal requirements and determine the right configuration for your enterprise.
