Turn on the debug switch of MGCP at Eudemon2100, and analyze the process of Eudemon2100 to forward MGCP:
*0.60525020 Quidway MGCP/8/debug: lBufLen = 125 Src AddrIP: 222.36.1.242, Port:2727 Dest AddrIP: 222.36.1.243, Port:10008 CRCX 211140962 aaln/1@iad108test.com MGCP 1.0 C:a6c9616 L:a:G729,p:20 M:recvonly X:1609bb0e R:G/ldN),D/0-9*#](N) S: *0.60527600 Quidway MGCP/8/debug: lBufLen = 125 Src AddrIP: 222.36.97.92, Port:2727 Dest AddrIP: 222.36.97.93, Port:1026 CRCX 211140962 aaln/1@iad108test.com MGCP 1.0 C:a6c9616 L:a:G729,p:20 M:recvonly X:1609bb0e R:G/ld(N),D/[0-9*#](N) S:
*0.60528350 Quidway MGCP/8/debug: lBufLen = 98 Src AddrIP: 222.36.97.93, Port:1026 Dest AddrIP: 222.36.97.92, Port:2727 200 211140962 OK I:98306 v=0 c=IN IP4 192.168.100.100 m=audio 50000 RTP/AVP 18 a=ptime:20
*0.60528630 Quidway MGCP/8/debug: <Exit <MGCP_Receive>> 987
*0.60528700 Quidway MGCP/8/debug: <Enter <MGCP_APP_proc> > 354
*0.60528780 Quidway MGCP/8/debug: <Enter <MGCP_PduInd> > 304
*0.60528850 Quidway MGCP/8/debug: <Enter <MGCP_TxnInd> > 182
*0.60528920 Quidway MGCP/8/debug: <Enter <MGCP_ProcRsp> > 1966
*0.60529000 Quidway MGCP/8/debug: <Enter <MGCP_GetMgIndexByAddrInfo> > 3060
*0.60529100 Quidway MGCP/8/debug: <Enter <MGCP_GetMgIndexByMgIpAddr> > 1653
*0.60529190 Quidway MGCP/8/debug: <Information: Hash Seach Succ(MgIndex = 0)! <MGCP_GetMgIndexByMgIpAddr>> 1673
*0.60529330 Quidway MGCP/8/debug: <Exit <MGCP_GetMgIndexByAddrInfo>> 3114
*0.60529420 Quidway MGCP/8/debug: <Enter <MGCP_ProcCrcxRsp> > 2241
*0.60529500 Quidway MGCP/8/debug: <Enter <MGCP_SdpInfoSetProc> > 736
*0.60529580 Quidway MGCP/8/debug: <Enter <MGCP_SdpProc> > 637
*0.60529660 Quidway MGCP/8/debug: <Enter <MGCP_SdpConnProc> > 423
*0.60529741 Quidway MGCP/8/debug: <Enter <MGCP_GetRtpAddr> > 130
*0.60529820 Quidway MGCP/8/debug: <Exit <MGCP_GetRtpAddr>> 177
*0.60529900 Quidway MGCP/8/debug: <Enter <MGCP_ConvertSdpAddr> > 322
*0.60529980 Quidway MGCP/8/debug: <Information:MgIndex = 0 <MGCP_ConvertSdpAddr>> 333
*0.60530090 Quidway MGCP/8/debug: <Exit <MGCP_ConvertSdpAddr>> 348
*0.60530170 Quidway MGCP/8/debug: <Enter <MGCP_FillSdpIp4AddrToCCb> > 359
*0.60530260 Quidway MGCP/8/debug: <Exit <MGCP_FillSdpIp4AddrToCCb>> 407
*0.60530350 Quidway MGCP/8/debug: <Exit <MGCP_SdpConnProc>> 469
*0.60530430 Quidway MGCP/8/debug: <Enter <MGCP_SdpMediaProc> > 487
*0.60530510 Quidway MGCP/8/debug: <Enter <MGCP_GetRtpPort> > 66
*0.60530590 Quidway MGCP/8/debug: <Exit <MGCP_GetRtpPort>> 124
*0.60530670 Quidway MGCP/8/debug: <Enter <MGCP_FillPortToCCb> > 237
*0.60530750 Quidway MGCP/8/debug: <Exit <MGCP_FillPortToCCb>> 271
*0.60530840 Quidway MGCP/8/debug: <Exit <MGCP_SdpMediaProc>> 530
*0.60530920 Quidway MGCP/8/debug: <MgcpError:SdpMediaProc Failed! <MGCP_SdpProc>> 676
*0.60531030 Quidway MGCP/8/debug: <Exit <MGCP_SdpProc>> 677
*0.60531100 Quidway MGCP/8/debug: <MgcpError:SdpProc Failed! <MGCP_SdpInfoSetProc>> 828
*0.60531210 Quidway MGCP/8/debug: <Exit <MGCP_SdpInfoSetProc>> 829
*0.60531290 Quidway MGCP/8/debug: <Exit <MGCP_ProcCrcxRsp>> 2266
*0.60531370 Quidway MGCP/8/debug: <Enter <MGCP_ResetTransCcbInMgCb> > 2524
*0.60531460 Quidway MGCP/8/debug: <Exit <MGCP_ResetTransCcbInMgCb>> 2578
*0.60531550 Quidway MGCP/8/debug: <Exit <MGCP_ProcRsp>> 2157
*0.60531620 Quidway MGCP/8/debug: <MgcpWarning:Txn Proc Fail! <MGCP_TxnInd>> 275
*0.60531720 Quidway MGCP/8/debug: <Exit <MGCP_TxnInd>> 281
*0.60531790 Quidway MGCP/8/debug: <Exit <MGCP_PduInd>> 525
*0.60531860 Quidway MGCP/8/debug: <Exit <MGCP_APP_proc>> 390
*0.60531930 Quidway MGCP/8/debug: <Enter <MGCP_Receive> > 934
From the information above, we can find that Eudemon can forward the CRCX transmitted by Sx3000, but Eudemon fails to process the SDP of CRCX_RSP message of IAD, and it does not forward it to Sx3000. At the beginning, we thought that the version of Eudemon is problematic; after careful checkup, we find that the range of media interface is not configured. Add sbc portr media beg 30000 end 65535, and the problem is solved. For more debug information, see the attachment.
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