VoIP Foro- Voice over IP - Asterisk and SER

We have found a program to call for free to over 40 countries. It is called Internet Calls. You can download it here. Try it. It is very easy to install and to use.

Trick: Besides, you can configure your favourite softphone or IP telephone and you do not have to use their software telephone. You only have to use the following IP address for the proxy: 194.221.62.206 and the user and password of your Intercalls profile. Enjoy it !

To call free to over 40 countries we have found the following programs www.voipbuster.com in Switzerland y and its filials www.voipcheap.co.uk in United Kingdom, www.netappel.fr in France, www.voipstunt.com in Germay www.sipdiscount.com in Switzerland also.

They require registration and in VoIPBuster, NetAppel and VoIPStunt we have to pay 10 Euros and in VoIPCheap 5 Euros. With that money we can phone to over 40 countries for free. Anyway, we can make phone calls of less than a minute for free . Recommended.

Asterisk installation and configuration

Asterisk is an open-source software implementation of a PBX (Private branch exchange). For example, Asterisk let us to connect by telephone just for free two different offices in two different cities.

Asterisk has a lot of commands and possibilities. We have have created a basic tutorial to install and configurate it with easy examples. Asterisk can be installed under windows OS (Asterisk for windows) or can also be installed under linux OS (Asterisk for linux). You can find all the information in information about Asterisk

SER (SIP Express Router) installation and configuration

We have added to our website a new section about how to install and configure SER (SIP Express Router). We think it can be of your interest

SER is a SIP server that can manage multiple SIP request. It can be used alone or with Asterisk (SER vs Asterisk) in order to improve Asterisk scalability. This documentation can help to install and configure SER. More info about SER

Besides you could configure SER with MySQL, being a more practical solution to manage SER features.

SIP error codes

Sometimes you need to know the most common SIP error messages and their meaning.

Sometimes everything work ok and the messages only said to you that the called user is busy or has rejected the call.

On the other hand, sometimes the network or the service provider is down and you cannot use the service.

[ + info about SIP errors]

Forum and VoIP dictionary

Sometimes we have doubts that we do not know how to solve because they are very specifc or because we do not find a generic answer. You can use the voip forum for thath pourpose and let your question. Perhaps another person with the same problem or with more knowledge can help you.

On the other hand, sometimes reading a tutorial or using a program we see words or acronims that we do not know what they mean and we only need a littel definition. We can use the voip dictionary of VoIP terms.


	Softphones To call using IP technology we only need an IP telephone or a program that emulate it in our computer. The software programs which emulates the IP phones are called Softphones. Besides we have created the Sjphone installation and configuration guide to help you with one of the best softphones.




	Comparatives Sometimes it is very useful to know the differences between two possibilities in VoIP. For that purpouse we recommend you to take a look at: SIP vs H.323 Comparative VoIP Codec comparative Asterisk vs SER comparative SIP vs IAX Comparative