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Trunk SIP

i have to build an ip telehony system in a building, and i want also to connect this bilding to NGN with SIP.how can i do this ?

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Green

Re: Trunk SIP

Sorry for my ignorance but im not familiar with NGN,

CCM 4.X support SIP trunks.

It may help you if you have a SIP proxy server or if your NGN can act as a SIP proxy.

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_administration_guide_chapter09186a00801ec5cd.html#77849

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