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T3 controller issue, line protocol not coming up


We are having issue with one of our T3 controllers, we have tried everything but line protocol is not coming up.

Controller is showing up at sides but line protocol  is in down state.

One side we have ASR1K and other side it's 7600 series router.

Below are the actions performed by us so far:

1- we have done loop testing with both side of carrier, found clean loop without errors.
2- Carrier has confirmed following setting at their side.
Encap Type   : ppp-auto
Framing       : c-bit
Admin MTU  : 2000                  
Oper MTU    : 2000
3-We have replaced the cable at both side.
4-We have done SPA reset at both side.
5-we have changed Framing from C-bit to M13,M23 at both side  but no diffrence .
6-we have changed clocking from Line to internal at both side but No difference.
7-Frame-relay intf-type changed to DCE and DTE at both side but no diffrence.
8-We have done port movement on the same SPA card at both end
9-we have done SIP reload at both end

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