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Posts Created by Kevin

Router Configuration for 3CX PhoneSystem

July 23, 2010 - 5:17 pm | 3 Comments

Correct Router Configuration is a key element in ensuring correct communications between 3CX PhoneSystem and external entities such as external extensions, VoIP Provider services, and other Bridged PBXs. NAT and/or PAT When a network host A sends a request to another network host B, it will be expecting a reply to the request. When both network hosts reside on a Public IP Address, the exchange is direct, and simple enough.

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Outbound Rules – A Complete Example

July 20, 2010 - 4:44 pm | 2 Comments

Configuring Outbound Rules on 3CX PhoneSystem is a very simple affair if you have a single device or service which you deliver calls with – in most cases a single rule will be enough. But the Outbound Rules in 3CX PhoneSystem allows you to create much more complex rules – allowing you to not only select backup routes which come into effect when other routes fail, but also to select

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3CX Phone Provisioning – A Complete Guide

July 12, 2010 - 4:24 pm | 1 Comments

The whole point of provisioning phones is to eliminate the difficulties associated with manually configuring a large number of devices: It is a tedious task It can be very time consuming Possibility of Human Error Retaining a Standard Config Enterprise-Wide

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Securing 3CX PhoneSystem – some hints!

June 14, 2010 - 11:09 pm | 5 Comments

If you have been asking yourself how to secure 3CX PhoneSystem, read on…

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General Configuration Information when using VoIP Providers

May 3, 2010 - 2:20 pm | 3 Comments

This document will provide an overview of the more common concepts which need to be kept in mind when configuring 3CX PhoneSystem inside your network infrastructure, including the following topics: NAT Configuration STUN Resolution DNS Resolution in a VoIP environment Custom Configuration for particular network layouts Different types of VoIP Provider Accounts Custom Source Identification for VoIP Provider SIP message exchange

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Configuring the Portech MV-370 and MV-372

April 26, 2010 - 2:16 pm | 0 Comments

IMPORTANT This device has been tested for Voice using firmware version of “Wed Jun 10 11:53:59 2009”. The guide and template may not work for earlier or later versions of the firmware! Configuration is a 2 step process. First you need to configure 3CX Phone System for use with the Portech. Then, you need to configure the Portech to register and communicate with 3CX PhoneSystem.

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Bandwidth Overhead over DSL connections

April 16, 2010 - 5:00 pm | 4 Comments

Internet Service Providers typically rate their connectivity services based on download and upload bandwidth. So for example you may subscribe to an aDSL connection rated at 2 Mbps (Megabits per Second) download and 1 Mbps upload. The traffic reaching the provider’s network from the aDSL modem is then routed to its eventual destination by traversing an ATM (Asynchronous Transfer Mode) network, and to do this, packets are broken up into

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3CX Assistant Advanced Features

April 6, 2010 - 7:55 pm | 0 Comments

The 3CX Assistant is a useful tool that allows a user to better manage calls, and to collaborate with other users within the same group of Extensions. 3CX Assistant also includes some advanced functionality that can significantly improve a user’s experience and productivity with 3CX PhoneSystem.

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Configuring the Acrobits Softphone on your iPhone as a 3CX Extension

March 30, 2010 - 4:01 pm | 1 Comments

Note 1: This guide has been tested with version 3.0.4. Be aware that different version may have different interface formats and functionality Note 2: Not all providers allow calls over 3G. If your calls are working as an external extension over WIFI, but not on 3G, the ports may be blocked Installing Acrobits SoftPhone on your iPhone Go to the Apple AppStore Download the Acrobits SoftPhone application onto your iPhone

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Firewall Configuration Overview for 3CX PhoneSystem

March 29, 2010 - 2:57 pm | 0 Comments

In order for 3CX Phone System to communicate successfully with VoIP providers and Remote Extensions, your firewall/router device must be configured for SIP operation. To maximize your chances of success, make sure you choose a device that does not implement a SIP Helper or SIP ALG, or which can be configured to be disabled.

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3CX Advanced Training Webcast on 3CX Assistant 25 March 2010 at 1500hrs (GMT+1)

March 14, 2010 - 11:06 pm | 5 Comments

3CX is now providing additional free training Webcasts on more advanced topics, and the next one is scheduled for Thursday 25 March 2010 at 1500hrs (GMT+1). This will be presented via Microsoft Live Meeting using its built-in VoIP for audio – so there will be no need to call into a conference call number. To Join the Webcast: Go to https://www.livemeeting.com/cc/meetwith3cx/join?id=WTQ5Z8&role=attend and follow the on-screen instructions. No prior registration is

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3CX Training Webcast for Thursday 11 March 2010 at 1500hrs (GMT+1)

March 1, 2010 - 4:05 pm | 0 Comments

3CX provides monthly free training Webcasts, and the next one is scheduled for Thursday 11 March 2010 at 1500hrs (GMT+1). This will be presented via Microsoft Live Meeting using its built-in VoIP for audio – so there will be no need to call into a conference call number. To Join the Webcast: Go to https://www.livemeeting.com/cc/meetwith3cx/join?id=GZ3M8K&role=attend and follow the on-screen instructions. No prior registration is necessary. We should be able to

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Advanced Webcast on Phone Provisioning 16 February 2010 at 1500hrs (GMT+1)

February 5, 2010 - 8:02 pm | 0 Comments

Advanced Webcast on Phone Provisioning and 3CX Assistant 9 February 2010 at 1500hrs (GMT+1)

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3CX Training Webcast for Thursday 11 February 2010 at 1500hrs (GMT+1)

February 1, 2010 - 12:01 am | 0 Comments

3CX provides monthly free training Webcasts, and the next one is scheduled for Thursday 11 February 2010 at 1500hrs (GMT+1). This will be presented via Webex using its built-in VoIP for audio – so there will be no need to call into a conference call number. To Sign Up Go to http://meetwith3cx.webex.com Under the “Attend a Meeting” Node in the left hand side, click the “Browse Meetings” option. Browse through

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3CX Phone System Parameters Table

January 10, 2010 - 9:01 pm | 0 Comments

The Custom Parameters contains a list of advanced settings for 3CX Phone System. The default value of these parameters generally applies to most installations, and should not be altered unless otherwise advised to do so by 3CX Support. The Custom Parameters can be found in the 3CXC Management Console > Settings > Advanced > Customer Parameters tab. The following is a list of all parameters:

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3CX Training Webcast for Thursday 14 January 2010 at 1500hrs (GMT+1)

January 2, 2010 - 12:01 am | 1 Comments

3CX provides monthly free training Webcasts, and the next one is scheduled for Thursday 14 January 2010 at 1500hrs (GMT+1). This will be presented via Webex using its built-in VoIP for audio – so there will be no need to call into a conference call number. To Sign Up Go to http://meetwith3cx.webex.com Under the “Attend a Meeting” Node in the left hand side, click the “Browse Meetings” option. Browse through

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3rd Party Supported VoIP Providers

January 1, 2010 - 9:00 am | 0 Comments

The VOIP Providers listed below are not directly available in the ‘Add VOIP’ section of the 3CX Phone System Web Interface, but are known to work with 3CX Phone System and tested by 3rd parties.

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How to Set Up a Windows 2008 R2 SNTP / NTP Server

December 5, 2009 - 5:32 pm | 0 Comments

When configured correctly, you can use the Windows Time (W32Time) service as an SNTP/NTP server for both windows and non-windows SNTP/NTP clients.

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3CX Training Webcast for Thursday 10 December 2009 at 1500hrs (GMT+1)

December 1, 2009 - 12:01 am | 4 Comments

3CX provides monthly free training Webcasts, and the next one is scheduled for Thursday 10 December 2009 at 1500hrs (GMT+1). This will be presented via Webex using its built-in VoIP for audio – so there will be no need to call into a conference call number. To Sign Up Go to http://meetwith3cx.webex.com Under the “Attend a Meeting” Node in the left hand side, click the “Browse Meetings” option. Browse through

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3CX Training Webcast for Thursday 26 November 2009 at 1500hrs (GMT+1)

November 18, 2009 - 9:47 pm | 7 Comments

3CX provides monthly free training Webcasts, and the next one is scheduled for Thursday 26 November 2009 at 1500hrs (GMT+1). This will be presented via Webex using its built-in VoIP for audio – so there will be no need to call into a conference call number. To Sign Up Go to http://meetwith3cx.webex.com Under the “Attend a Meeting” Node in the left hand side, click the “Browse Meetings” option. Browse through

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Ports used by 3CX Phone System

November 3, 2009 - 7:29 pm | 0 Comments

The following is a complete list of ports that 3CX PhoneSystem uses in a default installation scenario:

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Direct SIP Explained

November 3, 2009 - 12:53 pm | 0 Comments

How does direct SIP work? The way direct SIP calls are initiated is very similar to the way sending an email works. A caller can call a callee from either a stand alone SIP phone which is not registered to any SIP server,  to a VoIP provider, or from a SIP phone registered to an IP PBX, which supports direct SIP. If a user calls “robert@voipproducts.org” from a stand alone

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3CX Training Webcast for Thursday 12 November 2009 at 1500hrs (GMT+1)

November 1, 2009 - 12:01 am | 6 Comments

3CX provides monthly free training Webcasts, and the next one is scheduled for Thursday 12 November 2009 at 1500hrs (GMT+1). This will be presented via Webex using its built-in VoIP for audio – so there will be no need to call into a conference call number. To Sign Up Go to http://meetwith3cx.webex.com Under the “Attend a Meeting” Node in the left hand side, click the “Browse Meetings” option. Browse through

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What is the firewall checker and why do I need it?

October 3, 2009 - 7:11 pm | 0 Comments

Introduction The 3CX Firewall Checker checks whether the ports needed to communicate with your VOIP provider are open and properly configured with STATIC Port mapping. If the firewall checker does not complete successfully, you will not be able to make or receive calls from a VoIP provider or external extension. Common symptoms that are linked to incorrect firewall configurations are: No registrations One-way audio Stun Problems, or incorrect resolution The

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Using the 3CX SIP Proxy Manager

September 3, 2009 - 7:21 pm | 0 Comments

Click to download the stand-alone SIP Proxy Manager What is the 3CX SIP Proxy manager The SIP Proxy Tunnel can combine all SIP (signaling) and RTP (media) VoIP Packets from one location (typically a remote office) and deliver them to and from another location (typically the PBX Server) using a custom TCP protocol. This simple concept allows us to exploit the SIP Proxy Tunnel to overcome difficult situations, or to

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