VoIP Technology

Ever since its invention, telephony has evolved. The first exchanges had human operators who manually connected calls. These were replaced by automatic exchanges, and then by electronic exchanges.

The Versitel in telephony started when calls could be delivered from phone to phone over digital circuits, and particularly by using the TCP/IP protocol, which is used in many data networks including The Internet. This is VoIP (or voice over internet protocol). VoIP did not start out with a great reputation,

  • Early VoIP systems were unreliable
  • suffered poor quality
  • call connections often dropped for no particular reason.

One of the weakest links in the delivery of a VoIP service has been in the data connection to the user’s premises. To put it simply, a budget Internet connection is usually less reliable than a traditional phone line.

  • The Versitel VoIP solution: We supply specially designed data connections to carry VoIP calls.
  • In particular we can achieve: Resilience greatly improved when compared with standard Internet connections data circuits. Optimised for voice traffic, Adequate bandwidth at reasonable cost, Excellent call quality all of the advantages of VoIP telephony, none of the disadvantages of traditional systems

How It Works:

Versitel Phones specialises in the supply, installation and support of hosted VoIP telephone systems.

What this means is that a Versitel system is different from a traditional phone system in two main areas...

  • First, the connection of your telephones to the global public phone network is handled by a data connection rather than by traditional analogue or ISDN connections. This gives you reduced line rental costs, especially if you have a significant number of incoming lines.
  • Second, the actual switching of phone calls is not carried out on your premises.
  • So, instead of the traditional concept of you having your own private telephone switch (PBX) on your premises, all the switching functions are carried out centrally.
  • We provide a soft-switch which in reality is a cluster of computer servers and related hardware all located in a secure data centre. For resilience, the whole of the core switching system is duplicated in a second, geographically separated data centre as well.
  • All of this adds up to reduced costs and increased flexibility.

Call Capacity

Traditionally, telephone systems were limited in terms of the number of simultaneous incoming/outgoing calls by the number of lines into the premises Or the number of available channels if the service was provided over ISDN.

With a hosted VoIP solution, the number of simultaneous calls is limited only by the bandwidth available on the data connection which carries the VoIP traffic. Generally a VoIP solution will allow more calls than a traditionally connected system.

The difference becomes dramatic in the case where the telephone system handles call queueing.

  • On a tradtional system, even more incoming lines are required to bring in the calls so that they can be queued on the PBX.
  • On a hosted VoIP system the calls are queued at the network core - no extra capacity (and so no extra cost) is required at the premises.

Advantage Of Hosted

A hosted solution has a number of big advantages over a traditional system;

Here’s a few: --

  • Reduced capital cost
  • No PBXs to be purchased
  • No obsolescence
  • The Revolution core switching system is regularly updated, unlike most PBX-based systems which become outdated soon after installation
  • Fully and seamlessly integrated across multiple sites
  • Home workers and other out workers can be transparently linked in to the system
  • High reliability - we aim for better than 99.999% availability of the primary switch
  • Disaster proof

In the event of major disruption at the user’s premises we can use the core switching system to route incoming calls to mobiles, home land lines, or anywhere else for users who deal with large volumes of incoming calls and call queuing systems we can improve efficiency and reduce costs by queuing on our switch rather than delivering calls to be queued on a PBX.

  • Continuously reviewed best call tariffs for all types of calls
  • Secure web-based provisioning and management
  • Centralised departmental itemised billing

Phones Anywhere

At last, simplicity and flexibility have arrived in telephone systems.
The traditional approach: Phones are connected to a premises switch (PBX) sometimes over proprietary telephone cabling, sometimes over structured cabling.

In either case, the socket on the PBX into which the phone is connected dictates the extension number of the phone. The PBX has to be programmed to deliver incoming calls to the right extensions. Every separate location (e.g. branch offices) need separate PBXs.

The Versitel approach: A phone can be plugged in anywhere where there is an Internet connection anywhere

  • In the head office, branch office, home office, hotel room. Anywhere in the country, anywhere in the world.
  • If, for example, staff transfer from one branch to another, they can take their phones and just plug them in - nothing to change, nothing to reprogram. The Versitel system can even be configured to deliver incoming calls on a direct-dialled number to ring on any number of phones in diverse locations.