On Wed, Sep 17, 2014 at 10:06 PM, Nathan Anderson <[email protected]> wrote:
> BUT Polycom handsets cannot be configured to just listen to RTP being > multicasted to a particular multicast IP like many other IP phones > can...the signalling for Polycom multicast paging and PTT functionality is > completely proprietary and not SIP-based, and in fact the audio itself is > not RTP. It is a proprietary audio packet format that has a header > prefixed to it containing signalling information, on every audio > packet/frame. Therefore nothing else can initiate a multicast page except > another Polycom phone on the same layer 2 broadcast domain...you cannot > programmatically have Asterisk/FreePBX do this. > There is one product that I know of that is Compatible with Polycom paging. The Algo 8180 Audio Alerter. http://www.algosolutions.com/products/Audible-and-Visual-Alerting/8180-sip-audio-alerter.html You can call it via SIP from asterisk and it can multicast in the special Polycom format to your phones. -- A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects. ---Heinlein
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