Graham Francis : The SIP School
Graham Francis
| The SIP Blog is just that; with opinion and analysis on all things SIP in the world of VoIP

SIP Trunk tag

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the SIP Survey 2014 is out!

The 2014 SIP survey has been made available today on www.thesipschool.com.  All of you that are existing subscribers and/or students (of The SIP School) will be receiving an email with the link to download the PDF, any new visitors to...

the SIP Survey is out!

The 2013 SIP survey has been made available today on this website.  All of you that are existing subscribers and/or students will be receiving an email with the link to download the PDF, any new visitors to this site can...
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