How does DTI's VoIP System Work?

We have developed resources for utilizing internet connections to their fullest capabilities. Our new Voice-over-IP Systems can enrich the quality of your communication and cut your telephone costs in many different ways.

But how is such a daunting task possible, you may ask? Voice-over-IP technology has been possible for a few years, but until now, delays and lack of clarity impeded the use of IP Phones for regular home or business purposes. Using specialized software developed in-house, we can now offer the crisp, clear tones usually associated only with digital communication.

Using our specialized system, the voice is transmitted over the internet (not your computer) via high-speed data transfers directed by IP addresses. The following equipment connectivity diagram outlines the data transmission route from your high-speed internet connection to your DTI Voice-over-IP Phone or Adapter.

VoIP Equipment Connectivity and Setup

	Your High-Speed  Internet Provider (sends transmissions via  cable wiring)
	Your Modem (DSL, cable, or other)
	Your DTI  Voice-over-IP Router
Your Computer/  Other Devices		Your Phone Set/ Fax Machine

Everything connected to the Internet must have a unique numerical address. Just as your home has a unique address, so does each computer or device attached to the internet.  These IP** addresses can fluctuate depending on the type of network connection used.

There are two types of network connections one might encounter when searching for an internet phone connection: Static IP and Dynamic IP.  

Static IP are used when it is desirable for IP addresses to remain constant in relation to particular devices (specific computers, phones, etc.). For large corporations who desire DTI's products and services but use Static IP address functioning, the setup is similar, but new additional Static IP addresses need to be assigned. 

While many large companies use Static addresses, approximately 70% of all addresses are Dynamic in nature.  Dynamic IP addresses are constantly and automatically being reassigned. 

With this in mind, Douglas Telecom configures each phone specifically for each customer.  So, by the time you receive your IP Phone or adapter, it is completely ready for you to simply connect it to any high-speed Dynamic IP internet access location.

**"Internet Protocol" - Internet communications protocol responsible for delivery of data packets from location to location based on IP destination addresses.

How DTI Saves You Money

You may be wondering just how we can save you so much money compared to larger nationwide telephone companies.  The secret lies in our extremely reliable telecommunications system, which is based on software we have designed ourselves.  While other companies must pass on substantial overhead costs for maintenance of copper wires and land lines, our high quality equipment transmits data over the internet at light-speeds; thus, all we pass on to you at each turn is quality and savings. See below for a short diagram depicting the very few steps through which our calls are routed.

Unlike calls with some VoIP companies, calls made to and from our system are routed precisely and accurately, always maintaining the highest sound transmission quality (99.9% reliability - data packet loss is only an issue at 95% or less). Although some competitors use tight compression to reduce bandwidth and crowd together as many calls as possible, we utilize 8000Hz at 8-bit PCM standard, so calls always have more than enough room to be heard exactly as they are spoken, and faxes are transmitted even better than with standard land lines.

How DTI Outgoing Calls Are Routed
(Works in reverse for incoming calls)

	Call is placed from any  Standard Non-IP Phone
	VoIP Adapter or Router (converts analog sounds to  digital format)
	DTI Server
Douglas Telecom System  (Call made to another  phone in our network)		Public Phone  System (Call made to any  non-DTI network number)