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Beginner

Centrex

i have analog voice users connected by Centrex service, wanna use ip networks to by pass long range toll.

so i use a cisco router to connect Centrex users to my ip networks.

but i don't know what kind of line should i apply from the carrier to connect my

router with carrier? is it DID line or what ?

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Enthusiast

Re: Centrex

If the analog lines are terminating on your centrex, you can have either digital or analog lines going form the centrex to the router. For Analog you can have E&M, FXS or FXO lines interfacing with the router. With digital you can do either ISDN signalling or CAS between the router and the carrier. That would involve a T1 coming form the carrier to the router. Depending on the number of users and the requirements, you could go either way.

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