Frame Relay between R3640E and Cisco 3640 or 2511 does not work.

After configuration was made current state of serial interface is up, current state of line protocol is down.

No alarm information.

Degrade software on R3640E from VRP3.30-0005 to VRP1.74-0105.

Debug fr lmi on R3640E: *0.2762171 R3640E FR/8/debug8: LMI: Serial1/0(down) DTE timeout *0.2762171 R3640E FR/8/debug8: LMI: Serial1/0 (out) status enquiry, full *0.2762172 R3640E FR/8/debug8: ssn = 254, rsn = 0 *0.2762173 R3640E FR/8/debug8: LMI: Serial1/0 in msg err (DTE in lmi enquiry) *0.2772170 R3640E FR/8/debug8: LMI: Serial1/0(down) DTE timeout *0.2772171 R3640E FR/8/debug8: LMI: Serial1/0 (out) status enquiry, full *0.2772172 R3640E FR/8/debug8: ssn = 255, rsn = 0 *0.2772173 R3640E FR/8/debug8: LMI: Serial1/0 in msg err (DTE in lmi enquiry) *0.2782171 R3640E FR/8/debug8: LMI: Serial1/0(down) DTE timeout *0.2782180 R3640E FR/8/debug8: LMI: Serial1/0 (out) status enquiry, full *0.2782180 R3640E FR/8/debug8: ssn = 1, rsn = 0 *0.2782182 R3640E FR/8/debug8: LMI: Serial1/0 in msg err (DTE in lmi enquiry) *0.2792170 R3640E FR/8/debug8: LMI: Serial1/0(down) DTE timeout Debug fr lmi on Cisco: Jun 17 17:39:17: Serial1/7(down): DCE LMI timeout Jun 17 17:39:32: Serial1/7(down): DCE LMI timeout Jun 17 17:39:47: Serial1/7(down): DCE LMI timeout Jun 17 17:40:02: Serial1/7(down): DCE LMI timeout Jun 17 17:40:17: Serial1/7(down): DCE LMI timeout Routers give this debug information independently of lmi type that was configured on routers: 1. q933a ?q933a 2. ansi ?ansi 3. nonstandard ?cisco 4. q933a ?ansi, in this case debug information is the same.