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How to configure T1 on UC560

I'm installing a UC560, T1 with DID's.  The T1 framing is ESF and signaling is B8ZS.  In CCA i'm not sure whice options to select under T1 config.  I can seize external dialtone from an extension, ring a remote location, caller ID info is seen; there is no audible ring tone from the extension and no audio either way (tx or rx) when the call is picked up at the remote location.  Incoming calls to any DID # returns fast busy tone.  Also what selections in CCA correspond to ESF/B8ZS?         

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