Voip Think- Voice over IP - Asterisk and SER - SIP IAX and H323

3CX VoIP Phone System, IP PBX for Windows
3CX PBX and Phone System for Windows
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  • VoIP Protocols
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  • Telephones
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  • QoS (Quality of Service)
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  • Codecs
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  • Asterisk
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  • 3CX PBX
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  • SER (Sip Express Router)
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  • More information
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    Softphones
    download 3CXphone
     
    3CXPhone - Softphone  

    To call using IP technology we only need an IP telephone or a program that emulate it in our computer.

    The software program which emulates the IP phones is called Softphone. Most of them are for free.

    Besides we have created the 3CXPhone installation and configuration guide to help you with one of the best softphone so you can test it and enjoy the experience of voip.

     
       
     

    SIP error codes
    DSS1 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]

    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.

     
    QoS - Voip Quality of service
    Quality of service can be a problem in voip communication. We do not hear or not very clear

    If we know the main problems taht can affect the quality maybe we can solve them

    The main problems in a Voip systema we need to be concern of , are Latency, Jitter, packet loss, and Echo.

    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


    VoIP Glossary


    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 little definition. We can use the voip glossary of VoIP terms.

     

     

     
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