voip

To keep your traditional PBX phone system or toss everything out in favor of a Internet Telephony system?

Why to refuse services which would promise to enhance the productivity?
Replace it all for a modern Voice over IP phone system and take all the advantages this relative new technology provides.

What to do?

You can decide whether to have:
- analog,
- digital, or
- IP phones
on your desk and whether to go with TDM or VoIP to be linked with the outside. With some systems you’ll be able to mix.

Which one to take?
VoIP?
TDM?
or Both?
Why not?

Most phone systems give you the option on how to connect to the PSTN or Public Switched Telephone Network.

A pure Internet Telephony phone system entirely operates in the Internet world from handset to call termination. The equivalent to the traditional PBX is the Voip PBX. The Voip PBX is mainly a software running on a Linux system. Handsets are referred to as SIP phones.
SIP is a switching protocol that controls the phone calls on packet based networks. Calls between subscribers of the same Internet Telephony service provider never leave the network and never enter the PSTN or Public Switched Telephone Network. Calls to and from non-subscribers are terminated to the PSTN at the location of the provider.

Usually you can mix purely analog phone systems, purely digital and TDM phone systems and purely VoIP phone systems. A Internet Telephony system may well have FXS (Foreign Exchange Subscriber or Station) ports to connect to analog handsets, as do traditional PBX phone systems. The service connection can be ISDN, T1, analog or SIP Trunking.

In general newer Voip PBX phone systems offer a wider range of handset and phone service connection options than legacy PBX systems. But before you make any big purchases or plans to replace you current phone system, you may ask a skilled expert or search for related information in one of the many Voip Review Sites you’ll find on the Internet.

Jim Francisto
VoIP PBX Hybrid
Free Online TV
VoIP Blog

Voip is not really a new concept and is now available on the market for many years, it’s no more in testing mode. People don’t know exactly what a device is. What is it, how does it work?
Here you will find some information aboujt devices.

A device can be classified in three general categories:

• end stations (such as phones),
  
• gateways and routers,
  
• and controllers.

Like everything else in IT, every category has a specific function that it performs. And if you combine all the functions you will get a complete Voip system.

Hardware and software VoIP phones
There are two types of VoIP phones: hardware and software.

• A hardware phone is a physical device, very similar to your common phone; it has a handset, dialpad, etc. The only thing that is different from your ordinary phone is that it connects to an Ethernet network rather than a telephone network. IP phones are built with all the necessary hardware (and software) to digitize your voice (i.e., codecs) as well as setup and make calls (i.e., signaling and transport).
  
• Software-only phones, or “soft” phones, use the PC’s capabilities to communicate with other PC’s over the Internet, by using the PC’s sound card, CPU and network card as part of the phone’s hardware, and thus, enable a PC to become an IP phone.
  

Gateway
A Voip Device is a device that connects the VoIP network to your public telephone network (PSTN). In this way, you can make calls and receive them, from your PTSN, even if you are using an IP-based system, just like your traditional phone. Depending on the type of the gateway, they are equipped with analog/digital interfaces in order to connect to your local telephone company. With so many options available today, gateways are also capable of transcoding (changing the signal from one codec version to another so that the device can communicate with the rest of the network). For example, a gateway uses G.729 codec, while your PTSN network uses a G.711 codec.

Routers
Routers are devices that decide where the IP datagrams should go, between networks, from the source to the destination. Routers are inter-network equipments that help a LAN connect to a WAN; therefore the router’s capability to ensure correctly handled high-priority traffic is very important. Since WAN speeds have generally less bandwidth than a LAN, proper packet queuing and prioritization is in order to ensure good voice quality across the path.

Voip Controllers
VoIP controllers, also called IP PBXs, manage the VoIP network. They are actually tools that you can use to configure your IP phone: restrict access, enabling functions and passwords, allowing/not allowing certain options, etc. Plus they are performing all the functions of a traditional PBX. IP PBX controllers are PC-based, running a standard OS (such as Microsoft Windows, Linux or Sun Solaris, but very different) with additional software to control the Voip systems. These Voip systems can provide APIs to extend vendor-provided or user-written features and functionality.

Jim Francisto
Voip
Free Online TV

Voice over IP phone service is popular among people these days. Voice over IP is a service, which transfers your voice to the audience through the Internet. Voice is carried between the communicators in IP packets. Special hardware are necessary for such phone service.

With Voice over IP, you can call and also receive calls. This happens through a broadband connection. Using a Digital Terminal Adapter, you can use the Voice over IP phone service . You can connect several phones to your DTA box and use the phones at different locations. So, you can answer your calls from various places of your house.

How does it work?
Voice over IP works by digitalizing the voice. It digitalizes the voice and esports it in packets to the destinations where the digitalized voice is again retransfomed to the normal voice. The digital form of voice can be compressed if necessary, converted and routed to other formats. These digital signals are better because they can tolerate noise. Voice over IP sends the packets of digitalized data through networks using TCP/IP protocol.

Advantages
Transportability - You can use your Voice over IP phone service at any place. The DTA gets a phone number, after which you can use the DTA with any broadband Internet connection. Just plug it and make and receive calls. You can use your DTA to call and receive calls around your country. In some cases the DTA works in other countries also.

Features - With Voice over IP, you get several other properties along with. The functionalities that you get are voice mail, 3-way calling, Caller ID, Call Forwarding, Call Waiting, and On-Line Account Management.

There is no cost to these functionalities. You can simply get these features by changing a software.

Reliability and Quality - Voice over IP is reliable and quality is generally good. But, sometimes you may face problems like need to reboot the DTA, delay, voice quality problems etc, which can be corrected simply by tuning the network.

In case of Voice over IP phone service, you do not have to pay for the time you use. But in case of PSTN and other call services, you need to pay for the time you use the service. Again, you can talk to several person at a time. You can exchange images, videos, texts with the people you talk with.

Both individual and businesses can use Voice over IP phone services. This will save a lot of money and time. But for that you should have the right VoIP phone service installed at the users place.

Jim Francisto
Voice over IP