Configuring External Extensions with 3CX Phone System

Connecting an External Extension to 3CX PhoneSystem is often requested, and can be extremely useful for linking small remote offices and home workers. Here we get a shot at using other phones as External Extensions. Note: If you are looking for instructions to connect a SIP Hardphone using the 3CX Tunnel Protocol via the 3CX SIP Proxy Manager, please view this guide. Using a SIP Hardphone as a Direct External Extension

How to Install and Configure a TFTP Server

TFTP stands for Trivial File Transfer Protocol simply because of its simplicity.  It is mainly used for automated file transfers between machines on UDP Port 69.  In a VoIP environment TFTP is used to upload firmware files to Gateways and Phones and other hardware. Step 1: Download a TFTP Server 1.  You will find pumpkin is an open source TFTP client that is simple to use, follow the link and

3CXPhone for iPhone available!

3CXPhone for iPhone is here! We’ve gotten the go-ahead from Apple and it is available immediately via the Apple Appstore. 3CXPhone for iPhone is a VoIP phone for Apple iPhone, iPads and iTouch devices running iOS 4.0 or higher. With it, you can make and receive calls via 3CX Phone System using Wifi or 3G and using your existing extension credentials. Since it’s a SIP client, you can easily use it

How to make a blind and attended transfer with Yealink

In this example we will demonstrate how to perform a blind and attended (consultative) transfer using a Yealink. We will assume that an incoming call will be received on the Yealink phone which is registered to Extension 114. 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. By comparison, an attended transfer

How to make a blind and attended transfer with Linksys

In this example we will demonstrate how to perform a blind and attended (consultative) transfer using a Linksys SPA962. We will assume that an incoming call will be received on the Linksys phone which is registered to Extension —. 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. By comparison, an attended

Firmware Upgrade on a Cisco SPA-50x SIP Phone

Using the recommended Firmware version is one of the keys for successful interoperability with 3CX PhoneSystem. From time to time, 3CX will release updates to the configuration guides that often include additional functionality that takes advantage of more recent phone Firmware versions. Note: This document refers to 3CX PhoneSystem V9 SP3 or Earlier. For later versions of 3CX PhoneSystem, please refer to: http://www.3cx.com/blog/ip-phone-configuration/upgrading-firmware-cisco/ This document will demonstrate how to upgrade

How to make a blind and attended transfer with Grandstream

In this example we will demonstrate how to perform a blind and attended (consultative) transfer using a Grandstream GXP2020. We will assume that an incoming call will be received on the Grandstream phone which is registered to Extension 101. 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. By comparison, an attended

What is your favorite IP Phone?

We’re interested to see which of the many phones that 3CX supports are most popular. Let us know by voting for your favorite IP phone!

How to make a blind and attended transfer with Snom

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

VIDEO:How to provision Polycom IP Phones with 3CX

How to make a blind and attended transfer with Cisco SPA

In this example we will demonstrate how to perform a blind and attended (consultative) transfer using a Cisco IP Phone SPA525G. We will assume that an incoming call will be received on the Cisco phone which is registered to Extension 103. 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. By comparison,

How to make a blind and attended transfer with Polycom

In this example we will demonstrate how to perform a blind and attended (consultative) transfer using a Polycom Soundpoint IP 650. We will assume that an incoming call will be received on the Polycom phone which is registered to Extension 111. 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. By comparison,

The Session Description Protocol (SDP)-VoIP Part 2

When a SIP based VoIP call is established, the audio or video sent between two SIP entities or more is streamed. Since many different codecs are supported by different devices or software, and each individual SIP entity taking part in the call does not know the IP address of the other SIP entity or to which port the stream should be sent to, SDP is used to advertise such details