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e1 or p1 or pri?

hi.. what is the common implementation to connect pbx with cisco router? is the connection actualy just by plugging short cable? what necessary frame/signaling needed? i mean something like pri,unframed/framed/channnilized? would please give me understanding what is it and how to configure them so i can make pabx trunk to router to router then to pabx trunk. i am glad if you give cisco doc that make it happen.. :)

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Re: e1 or p1 or pri?

My recommendation would be to use QSIG which is a variant of ISDN signaling. QSIG is supported on most cisco router platforms. The cabling could be a t1/e1 cable (possibly t1/e1 crossover cable) from router to pbx.

http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/products_configuration_guide_chapter09186a008020ece4.html#wp1037888

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