PBX / VoIP Phone Systems

VoIP offers a call quality comparable to, and in some cases better than, existing phone lines. However it is only as strong as the network that is carrying it.

When combined with your company's existing Virtual Private Network (VPN) it offers a zero cost way to connect all of your branch offices into a single unified phone system. We use it ourselves to connect our multiple US and New Zealand locations. Now calling someone in another office or another country is as simple as dialing an extension.

In our experience VoIP communication over our VPN within the US is close to perfect. For communications between the US and New Zealand the voice quality is generally better than what we have over a conventional phone line. However as there are more network issues involved over this distance we do experience the occasional drop out, but as VoIP is saving us hundreds of dollars a month on our phone bills these issues become insignificant.

In addition to VoIP over VPN, we can interface your system to third party VoIP providers that offer:

• Unlimited free off-network calling to the US and Canada for as little as $29.95/month, and extremely low international rates.

• Local phone numbers in different cities and even different countries. For example if you have a lot of customers in the United Kingdom you can have a local UK number that your customers can call toll free. All calls are routed through the internet to your current office.

• Toll free US 1-800 numbers for as little as $1.95/month extra.

Our VoIP PBX is a custom built Linux platform running the popular Asterisk PBX software. Asterisk is a widely used PBX solution that forms the basis of thousands of phone systems worldwide, from small business solutions to massive corporate call centers. Features include: voicemail, caller ID, call waiting, call forwarding, call queuing, music on hold, conference calls customized menus and dial plans lowest cost call routing priority call routing blocking of telemarketers and nuisance callers call monitoring and recording speech synthesis, with a choice of voices hardware support for standard phone lines, ISDN, and T1/E1/J1 support for all VoIP devices and systems

Once our PBX is connected to your network, various SIP or IAX phone adapters are placed around your offices to connect your existing analog phones. While special VoIP phones are available, they are still reasonably expensive at this time, and there is no need to abandon your existing telephones. Various VoIP line adapters are also available to connect your existing analog phone lines into the system so they are answered by the PBX.

When traveling, there are a number of Soft Phone programs available. These are programs that run on your notebook PC or PDA and use the internet to connect into the PBX. Your soft phone always has the same extension number no matter where you happen to be. And if you're not connected the PBX simply directs your calls to voicemail.

Interested? For more information on what Digital Design can do for your business please contact or call us at (615) 673 8847.