/ The VoIP druid
BuzzThe Canadian manufacturer Aastra will soon officially announce the venue of a new Wi-Fi SIP phone, called 312, even if the net is already buzzing this info. There are already SIP DECT phone at Aastra but since some customers would like to leverage their Wi-Fi infrastructure in order to carry voice, this new product arrive at a good time.
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When working in the IP telephony world it is crucial to know how to use a network analyzer, in order to understand how the traffic is circulating over the network. This article presents some interesting Wireshark features related to voice over IP protocols.
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It could sometimes be useful to be able to send a vocal message to a group of phone with the intercom feature. Most IP phones on the market support this feature which allows a call to be automatically answered and its content pushed to the speaker.
What we propose in this article is a solution to distribute a live message to a specific phone group. Such solutions are available on the net but since we haven’t found a complete functional one, we have built our own one on top of an Asterisk 1.4, the conference application and an automatic dialler written as an AGI.
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When looking at the published SIP exploit over a Grandstream IP phone1, one could quickly arrive to the conclusion this was more a feature than a bug, for what purpose is the real question to be asked.
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Our new Wi-Fi SIP phone from Linksys arrived few weeks ago and we have included it in our various tests to see how it works. The model is the WIP 300, first product of the portfolio and a cheap product, very far from a design and material point of view from industry standard in traditional enterprise voice, but it is targeting another audience and we see some interest in it.
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