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VWIC2-1MFT-G703, Line PROTOCOL DOWN

I have one cisco 2911 router with point to point leased line connection.

At my end fiber line is connected to CPE modem, from CPE modem to E1 modem, from E1 modem to v.35. from v.35 to router serial interface. same connectivity at my another location also.

At my side i have removed E1 and V.35 modems. I have fixed one VWIC2-1MFT-g703 card on my cisco router. Connected a cat5 cable from CPE modem to RJ-45 (1, 2 pins (Rx) and 4, 5 pins (Tx)) in VWIC2 card.

Configuration i have done is:

card type e1 0 3

controller e1 0/3/0

clock source line

channel group 0 unframed      <<--(my line is unframed on both ends)

interface serial 0/3/0:0

ip add 172.170.79.1 255.255.255.0

If i give "show ip interface brief" it is showing status is UP and line protocol is DOWN. Reliability is 128/255.

If i connect my modems in the topology its working fine. But i am facing this protocol down problem in VWIC2 only.

Please help me what should i do.

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