Friday, July 5, 2013

Back to Basics in SIP/ VoIP

There are two ways to use an SIP VoIP system: You can make and receive regular calls using the telephone number allotted to you by your service provider, or you can use an SIP address to make calls entirely over the Internet for free. The latter scenario is similar to a chat application or an e-mail client where it doesn't cost you anything to send and receive messages. After all, you already paid for your Internet connection. But in order to do this, the other person needs to be using VoIP as well. And not just any VoIP application. They need to be using an SIP compatible VoIP system with their own SIP address. This way, communication between two people can take place just like e-mail. Even the architecture is somewhat the same.

So what exactly is an SIP address? Again taking the comparison with e-mail just a step further, the address is composed of two parts - the username and the domain. Both are separated by the "@" symbol so the final form will look something like "somename@yourdomain.com". The latter part of the address will depend on whether or not you are a free or paid customer and if you want your own domain to be mentioned. For this, you need to have access to your domain tools including your DNS controls that support SRV records.

With this functionality, you will be able to maintain an SIP address that is visually identical to the e-mail ID that you provide your employees with. This makes it easy for them to integrate SIP calling into the contacts so that they can talk to each other entirely over the Internet for free. As a bonus, they can make use of specialized high-quality HD voice codecs that provide crystal clear voice clarity.

It's easy to see the benefits of merging voice calls with e-mail. You can create a business directory of employees and enable "one click calling" since the e-mail address is the same as the SIP address. Indeed, the goal is "Unified Communications" or UC where all of an organization's communications is presented and managed by a single graphical user interface.

No comments: