As the basic model of the snom business telephone family, the snom 300 fulfils the most important requirements of VoIP telephony and additionally offers numerous functions that are indispensable in the business world.
For effective everyday work, the snom 300 provides all relevant office functions such as choice of trunk line, status display, group lines, the [...]
If you have a need to have multiple PBX systems running and you want them all to make and receive calls, you will run into a major problem with that because of NAT issues and port forwarding limitations. In this article, I will explain how to use a trixbox CE system as a front-end gateway [...]
Power over Ethernet or PoE technology describes a system to transfer electrical power, along with data, to remote devices over standard twisted-pair cable (CAT5e) in an Ethernet network.
This technology is useful for powering IP telephones, wireless LAN access points, network cameras, remote network switches, embedded computers, and other appliances where it would be inconvenient, expensive [...]
What do the terms FXS and FXO mean?
In telecommunication, a foreign exchange service (FX) is a network-provided service in which a telephone in a given local area is connected, via a private line, to a central office in another, i.e., “foreign”, exchange, rather than the local exchange area’s central office.
In telecommunications, a Foreign Exchange Office, [...]
The Session Initiation Protocol (SIP) is a signalling protocol, widely used for setting up and tearing down multimedia communication sessions such as voice and video calls over the Internet. Other feasible application examples include video conferencing, streaming multimedia distribution, instant messaging, presence information and online games. The protocol can be used for creating, modifying and [...]
In just a few short days, the new Cisco 525G will ship to the public, and I could not be more excited!
For those who do not know, the Cisco 525G is the First integrated WiFi and Blue-tooth Business Desktop IP Phone. What does this mean? Well, for starters, no more cluttered cables on [...]
SIP call setup overview & ports used with 3CX
RTP and SIP Overview
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