One device, endless capabilities: Grandstream’s GCC6020 series brings together communications, security, VPN connectivity, and switching into a single, compact solution that seems almost unbelievable — until you see it in action.

This appliance combines an IP PBX, firewall, VPN router and network switch into one sleek platform. In this article, we examine the GCC6020 series and highlight its compelling characteristics for both small and mid-sized businesses. Read on to see how these devices make enterprise-grade performance easier and more affordable than ever.

Securing voice services is among the most essential measures any business can take to mitigate attacks involving toll fraud, denial of service or corporate espionage. Voice over Internet Protocol (VoIP) encompasses a robust and fully developed set of technologies that incorporate strong security features sufficient to deal with virtually all such attacks. Nevertheless, even with the most secured VoIP services, malicious hackers often find alternative attack vectors to achieve their goals.

In this article, we examine those attack vectors and the best practices to defend against them.

Product Review

Experienced telecom administrators know it’s challenging to provide ironclad security while maintaining speed on a communications network. This is especially true for enterprises with large mobile workforces, where users have internal telephone extensions on their mobile devices or home computers.

To make achieving these essential goals easier, Grandstream has introduced UCM RemoteConnect. This service caters to provisioning extensions for remote users of on-premises UCM6300 IP PBXs securely and lightning-fast.

If you are a voice network engineer, then it has probably happened to you. Your SIP server is all set up and you have plugged in your IP phone. Its lights come on, its screen is activated, you see the loading icon rotating, and then… nothing. For some reason, the phone will not register.

IP phone registration issues are, unfortunately, not uncommon. In this article, we examine the most common causes of registration failures, and best practices for troubleshooting and resolving them.

Wi-Fi itself should not be feared as a technology susceptible to network attacks; it is a flawed implementation that should be feared. Because of the nature of the technology, Wi-Fi signals can be easily intercepted by any wireless device within range. Nevertheless, with the proper security precautions in place, these intercepted signals become useless to even the most determined attacker. By employing industry-standard security measures, Wi-Fi becomes an enterprise-grade high-performance solution suitable for almost any application.

In this article, we examine the the most pervasive threats to Wi-Fi networks and the best ways to mitigate them.

A firewall is a vital component of any enterprise network. But, it can also wreak havoc on the operation of VoIP implementations. In this article, we address the most common problems a firewall can introduce to an IP telephony network, as well as best practices for avoiding or remedying them.