I think, i know whats a T1-CAS and T1-PRI circuit is meant for..but however i didn't find any document which explain why would i choose one over the other except for notes on differences between CAS vs CCS , 23 channels vs 24 , robbed-signalling vs dedicated D channel etc.
Is that some PBXs support only T1-CAS or T1-PRI ?
If your PBX supports both what advantages would you get by choosing one over the other ?
Does a T1-CAS cost you less than T1-PRI or vice-versa ?
What other factors should be looked for before choosing one over the other.
Can someone please help me