Help fixing TCAP Maintenance event : TCPEV_CPT_REQ_DISCARD

Hello

I am getting TCPEV_CPT_REQ_DISCARD message and am struggling to work out why, any help would be very gratefully received.

I am using s7_play to send the following messages, which should be an InitialDPSMS using the cap-v3-SMS application context.

M-tc7f2-i0000-fef-d35-p010104430100fc0304430200fa1b015500

M-tc7f0-i0000-fef-d35-p011001011501001301021402000a1221a11f02010102013c302980040a0b0c0d810500214365878205004365870983010100

M-tc7f2-i0000-fef-d35-p0300

The relevant lines in the log file seem to be:

S7L:I0000 T 00000154 M tc7f2 i0000 fef d35 r0035 s00 e00000000 p010104430100fc0304430200fa1b015500

S7L:I0000 M t0003 i0000 f35 def r0000 s00 e00000154 pef350000c7f00000000001540151f9280032011001011501001301021402000a1221a11f02010102013c302980040a0b0c0d810500214365878205004365870983010100

S7L:I0000 T 00000154 M tc7f0 i0000 fef d35 r0035 s00 e00000000 p011001011501001301021402000a1221a11f02010102013c302980040a0b0c0d810500214365878205004365870983010100

S7L:I0000 M t0003 i0000 f35 def r0000 s00 e00000154 p35140000c7810000000001540151fda8002c080301020402000a0121a11f02010102013c302980040a0b0c0d810500214365878205004365870983010100

S7L:I0000 T 00000154 M tc781 i0000 f35 d14 r0035 s00 e00000000 p080301020402000a0121a11f02010102013c302980040a0b0c0d810500214365878205004365870983010100

S7L:I0000 M t0003 i0000 f14 def r0000 s00 e00000154 p35140000c7810000000001540117fda8002c080301020402000a0121a11f02010102013c302980040a0b0c0d810500214365878205004365870983010100

S7L:I0000 T 00000154 M tc781 i0000 f35 d14 r0035 s00 e00000000 p080301020402000a0121a11f02010102013c302980040a0b0c0d810500214365878205004365870983010100

S7L:I0000 M t07a1 i0000 f14 def r0000 s01 e00000154

S7L:I0000 TCAP Maintenance event : TCPEV_CPT_REQ_DISCARD

S7L:I0000 M t0003 i0000 f35 def r0000 s00 e00000154 pef350000c7f2000000000154015203a800020300

S7L:I0000 T 00000154 M tc7f2 i0000 fef d35 r0035 s00 e00000000 p0300

S7L:I0000 M t0003 i0000 f35 def r0000 s00 e00000154 p35140000c783000000000154015206a8001e020601020704430100fc0804430200fa0d0ba10906070400000115033d00

S7L:I0000 T 00000154 M tc783 i0000 f35 d14 r0035 s00 e00000000 p020601020704430100fc0804430200fa0d0ba10906070400000115033d00

S7L:I0000 M t0003 i0000 f14 def r0000 s00 e00000154 p35140000c783000000000154011806a8001e020601020704430100fc0804430200fa0d0ba10906070400000115033d00

I have had successful dialogues using other application contexts, so I think the config.txt  and system.txt are probably OK, but in case it helps here they are:

system.txt

*

* Essential modules running on the host:

*

LOCAL 0x00 * Timer Task

LOCAL 0xcf * s7_mgt - Management/config task

LOCAL 0xc2 * mbm - Management task

LOCAL 0xd0 * SCTPD module

LOCAL 0xd1 * SCTP module

LOCAL 0xd2 * M3UA module

LOCAL 0x33 * SCCP module

LOCAL 0x14 * TCAP module

LOCAL 0x35 * INAP module

LOCAL 0xEF * S7_LOG

LOCAL 0x5d * s7_play

LOCAL 0x3d * Camel gateway

* Make sure MTP messages are routed to M3UA

REDIRECT 0x22 0xD2

* Now start-up all local tasks:

FORK_PROCESS ..\..\..\..\bin\sctpd.exe

FORK_PROCESS ..\..\..\..\bin\sctp.exe

FORK_PROCESS ..\..\..\..\bin\mbm.exe -d

FORK_PROCESS ..\..\..\..\bin\tim_nt.exe

FORK_PROCESS ..\..\..\..\bin\tick_nt.exe

FORK_PROCESS ..\..\..\..\bin\s7_mgt.exe -d

FORK_PROCESS ..\..\..\..\bin\s7_log.exe -o0xff1f -fss7.log

FORK_PROCESS ..\..\..\..\bin\m3ua_nt.exe -t

FORK_PROCESS ..\..\..\..\bin\sccp_nt.exe -t

FORK_PROCESS ..\..\..\..\bin\tcp_nt.exe -t

FORK_PROCESS ..\..\..\..\bin\inap_nt.exe -t

config.txt

CNSYS:IPADDR=192.168.0.2,PER=0;

*

*

********************************************************************************

** m3ua peer to peer configuration for point code 2, which will ber replaced by

** the Signalling gateway.

** for info on commands see U04STN06-Sigtran-PM.pdf

********************************************************************************

SNSLI:SNLINK=1,IPADDR=192.168.0.4,SNEND=c,SNTYPE=M3UA,HPORT=2905,PPORT=2905;

*

*Local application server initiate

SNAPI:AS=1,RC=1,SS7MD=ITU14,TRMD=LS,OPC=2;

*

*remote application server initiate

SNRAI:RAS=1,RC=1,DPC=1;

*

*remote application list

SNALI:SNAL=1,RAS=1,SNLINK=1;

*

*local bind initiate

SNLBI:SNLB=1,AS=1,RAS=1;

********************************************************************************

*

SCCP_CONFIG 2 0x08 0x0322 1

*

*SCCP_SSR [<nc_id>] <ssr_id> RSP <remote_spc> <rsp_flags> [<pc_mask>]

*

SCCP_SSR 1 RSP 1 0 0

*

*SCCP_SSR [<nc_id>] <ssr_id> LSS <local_ssn> <module_id> <lss_flags> <protocol>

*

SCCP_SSR 2 LSS 0xfa 0xef 0 INAP

*

*SCCP_SSR [<nc_id>] <ssr_id> RSS <remote_spc> <remote_ssn> <rss_flags>

*

SCCP_SSR 3 RSS 1 0xfc 0

*

* TCAP Parameters:

* TCAP_CONFIG <base_ogdlg_id> <nog_dialogues> <base_icdlg_id>

* <nic_dialogues> <options> <dlg_hunt> [<addr_format>]

TCAP_CONFIG 0x0 8192 0x8000 8192 0x0000 0 0

*

* Enable TCAP traces:

* TCAP_TRACE <op_evt_mask> <ip_evt_mask> <non_prim_mask>

TCAP_TRACE 0x7 0xf 0x0

*

INAP_CONFIG 0

*

* INAP_FE <fe_ref> <options> <sccp_address>

*

INAP_FE 0x00000001 0x00000001 0x4302000a

INAP_FE 0x00000002 0x00000001 0x4302000b

INAP_FE 0x00000003 0x00000000 0x4301000c

INAP_FE 0x00000004 0x00000000 0x4301000d

*

* INAP_AC <ac_ref> <ac>

*

INAP_AC 0x00 0xa109060704000101010000

INAP_AC 0x01 0xa109060704000101010100

INAP_AC 0x02 0xa109060704000101010200

INAP_AC 0x03 0xa109060704000101010300

INAP_AC 0x04 0xa109060704000101010400

INAP_AC 0x05 0xa109060704000101010500

INAP_AC 0x06 0xa109060704000101010600

INAP_AC 0x10 0xa109060700118942010000

INAP_AC 0x20 0xa109060704000001013200

INAP_AC 0x21 0xa109060704000001013201

INAP_AC 0x34 0xa109060704000101140304

* v3 SMS AC see http://www.oid-info.com/get/0.4.0.0.1.21.3.61 or search on id-ac-cap3-sms-AC

INAP_AC 0x55 0xa10906070400000115033d

*

INAP_TRACE 0xf 0xf 0x7f

Many thanks again for any help.