Tag Archives: VoIP

Configuring a Zyxel P-662H-D1 Router with 3CX Phone System

In this article, we will see how to configure a Zyxel P-662 to allow traffic required by 3CX Phone System. This is a 2 step process – first, we will configure the firewall to allow VoIP traffic from the internet … Continue reading

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Configuring a Yealink Phone…

In this article, i am going to walk you through setting up a yealink phone, so that it can make and receive calls via a SIP/VoIP/TISP Provider. Plug the phone in to a DHCP enabled network, click on menu, status … Continue reading

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SIP/VoIP: Simple Trouble Shooting…..

In this article I am going to cover some simple and common steps that a user of a VoIP/SIP telephony system can do before calling they VoIP provider. No inbound calls: Firewall – Make sure the firewall is not blocking … Continue reading

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Using Wireshark to Capture Network Traffic

When troubleshooting certain issues, it is useful to know what information is being sent and received over the network. This makes it possible to close in on the source of the problem encountered. Information transmitted on the network can be … Continue reading

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Network Configurations Supported by 3CX Phone System

  This guide illustrates how SIP, Audio and Data traffic is transmitted over the network when 3CX Phone System is used. This will depend on the backend infrastructure and network topology, and this guide helps administrators understand how 3CX operates … Continue reading

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