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docs & faq

Router Configuration for 3CX PhoneSystem

July 23, 2010 - 10:17 am | 0 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. If one of the network hosts resides on a Private IP Address, however, things start to be come more complex, because the network environment is a NAT/PAT environment. If network host A is in a NAT/PAT environment, when it sends a request to network host B, it will build its request using the only IP Address it knows – its private IP Address

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Outbound Rules – A Complete Example

July 20, 2010 - 9:44 am | 0 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 a different set of routes, depending on the type of number being dialled. For the sake of this example, we will assume that our PBX: Has a Gateway connected to a 23-channel T1 circuit – best rates for local calls Has a 3CX SkypeGateway connection to reach Skype IDs directly from an extension Has a VoIP Provider account – this channel provides the best rates for international calls, but (in this example) requires the destination number to be presented in full international format, with the international prefix being “00″ Is using 3-digit extensions Has a Bridge connected to another 3CX PhoneSystem (which is also using 3-digit extensions) installed in London Emergency Number Probably the best way to handle the “911″ Emergency Number is to start with it. First we should create an outbound rule to handle such calls: Specifying a prefix which has 3 digits, and restricting the rule to numbers which are 3 digits long, effectively creates a rule for only the number in the prefix field – in this case, “911″. Next, we should also create an extension, with extension number 911, with a single forwarding rule, that forwards ALL calls to external number “911″.

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How to make a blind and attended transfer with Snom

July 7, 2010 - 1:52 pm | 0 Comments

In this example we will demonstrate how to perform a blind and attended (consultative) transfer using a Snom 360. We will assume that an incoming call will be received on the Snom phone which is registered to Extension 100. This procedure applies to Snom 300, 320, 360, 370. Note: A Blind Transfer is a transfer to another extension without actually initiating a call to the end destination. The call is blindly transferred to the destination.

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Configuring the Portech MV-370 and MV-372

April 26, 2010 - 7:16 am | 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

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Bandwidth Overhead over DSL connections

April 16, 2010 - 10:00 am | 0 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 fixed-size cells, with routing information added to the cell in the cell header

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Configuring AVM FritzBox as a Firewall with 3CX Phone System

April 14, 2010 - 8:28 am | 0 Comments

This guide will show how to configure an AVM Fritzbox router / firewall as a border device with 3CX Phone System in the LAN. The tests were made using a FritzBox 7170 with firmware version 29.04.76

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3CX Assistant Advanced Features

April 6, 2010 - 12:55 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. Built-In Incoming Calls Notification 3CX Assistant can display a popup when an incoming call is detected.

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

March 30, 2010 - 9:01 am | 0 Comments

Note 1 : This guide has been tested with version 3.0.4.

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Firewall Configuration Overview for 3CX PhoneSystem

March 29, 2010 - 7:57 am | 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 …

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BeroNet bero*fix Box Configuration

March 18, 2010 - 12:13 pm | 0 Comments

This guide will show you how to configure a Beronet bero*fix box. The main target of this guide is to connect the bero*fix card with the LAN and WAN. . .

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