VoIP Quick start guide

By On November 9, 2011 · In Open source, QoS - Quality of Service, SIP protocol, VoIP calls quality, VoIP over VPN

Hi there. Today I found a quick start guide on VoIP written for Cisco 3600 series modular routers- click here to download PDF. I think it could be useful even if you just a newbie and what to learn how VoIP works, so I decided to share it. Please let me know if you think it’s [...]

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Voip via VPN SSL voice quality

Running VoIP via VPN (SSL) – voice quality

By On October 18, 2011 · In QoS - Quality of Service, SIP protocol, VoIP calls quality, VoIP over SSL VPN, VoIP over VPN, VoIP via VPN

The protocol overhead caused by the encapsulation of VoIP protocol within VPN dramatically increases the bandwidth requirements for VoIP calls, thus making the VoIP over VPN protocols too “fat” to be used over a mobile data connections like GPRS, EDGE or UMTS. Although VoIP over VPN is not as usable in mobile environments, it is [...]

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Wi-Fi access point/router optimization for VoIP and other real time apps

By On August 23, 2011 · In Mobile VoIP, Prioritization and traffic shaping, QoS - Quality of Service, SIP protocol, VoIP calls quality, VoIP over VPN

In order to improve the bandwidth allocation for certain apps in your wireless network you need to enable QoS (quality of service) feature on your router/access point. Please make sure that you have enough bandwidth available (down and up) on your [...]

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Nimbuzz growing even without Skype

By On June 24, 2011 · In Android, Asterisk, Mobile VoIP, SIP protocol, VoIP calls quality, VoIP over VPN

According to Nimbuzz, since July of 2010, they have more than 28 million new users joined their network. That amounts equals to 100,000 new peoples for every 24 hours and they’ve doubled in size in year to 50 million users.

Even with Skype integration removed, Nimbuzz still supports Facebook, Yahoo, Windows Live, Google Talk, AIM, and [...]

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How to make your VoIP calls private and confidential

By On June 21, 2011 · In Asterisk, Mobile VoIP, Prioritization and traffic shaping, SIP protocol, VoIP calls quality, VoIP over VPN

There is no doubt a chance exists that your IP phone calls can be tapped and listened to. We will discuss here how to make sure your calls stay private and secure.

The possibility your VoIP calls being monitored is much higher then of conventional phone calls. The reason for this is that IP telephony [...]

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Think on solutions: VoIP phone system

By On June 21, 2011 · In Android, Asterisk, Mobile VoIP, Prioritization and traffic shaping, QoS - Quality of Service, SIP protocol, VoIP calls quality, VoIP over VPN

It is often taken for granted that installing VoIP solutions will save customers time and money, but in actual fact getting Return on Investment depends on a number of factors.

Firstly if you are planning to use VoIP phone system for business purposes, think about how it will integrate into your existing Public Switched [...]

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Nokia SIP settings

By On June 16, 2011 · In Android, Asterisk, Mobile VoIP, SIP protocol, VoIP calls quality, VoIP over VPN

Nokia setup for SIP-based VoIP service

UPDATE: New article about SIP settings (Internet tel.) for Nokia E52 is here

Now you can enjoy crystal-clear phone calls over the Internet using the new Nokia S60 phones. If you have access to a Wi-Fi or 3G connection, you can [...]

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VoIP client behind a VPN with DD-WRT

By On June 14, 2011 · In Asterisk, Mobile VoIP, QoS - Quality of Service, SIP protocol, VoIP over VPN

We have two sites with local networks interconnected by VPN tunnel and we have a VoIP server at one of the sites. The server side based on a PC with Windows 2003 Server (also acting as VoIP and VPN server) installed. On the other side we have a DD-WRT as the VPN client.

As we [...]

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