DWS443I message includes a pair (origin, ns).
"Origin" has to be "I" for the following codes to be applicable !
"NS" is "CC+DD".
 ===============================================================
 .                                                             .
 .   NS Interface CAUSE & DIAGNOSTICS CODES.                   .
 .                                                             .
 =CC==DD========================================================

  01           Real Line problems. (LAMLSENS)
  . X'18           Hardware error (LC2)
  . X'19           Timeout. (LC3)
  . X'1A           Scanner down at C.D. (LC3)
  . X'1B           Timeout + Scanner down at C.E. (LC3)
  . X'1C           Scanner down at C.E. (LC3)
  . X'20           Set Mode, Box error.
  . X'21           Set Mode, No box error.
  . X'22           Enable, Modem Check.
  . X'23           Enable, Box error.
  . X'24           Enable, No box error.
  . X'25           Monitor For Call, T.O.
  . X'26           Call Request, TIMEOUT.            +++ V.25 bis
  . X'27           " + INVALID.                               .
  . X'28           " + DELAYED CALL.                          .
  . X'29           " + COLLISION.                             .
  . X'2A           " + CALL FAIL, engaged tone received.      .
  . X'2B           " + CALL FAIL, local DCE busy.             .
  . X'2C           " + CALL FAIL, ring tone received.         .
  . X'2D           " + CALL FAIL, abort call.                 .
  . X'2E           " + CALL FAIL, no answer tone detected.    .
  . X'2F           " + CALL FAIL, forbidden call.             .
  . X'30           " + CALL FAIL, unknown cause               .
  . X'31           " + CALL FAIL, other.                      .
  . X'32           " + timeout ECO.                  --- V.25 bis
  . X'33           Receive, modem check.
  . X'34           Transmit, modem check.
  . X'35           Monitor For Call, hardware error.
  . X'36           Call Request, hardware error.
  . X'37           Monitor Incomming Call timeout, 3720-25.
  . X'98           Scanner down
  . X'99           Modem check
  . X'9A           Hardware error or timeout
  . X'FE           DISCONNECT recibido del Host.
 --------------------------------------------------------------.
  02           Real PU problems. (LADLCDRC)
  . X'01             incorrect frame received (I- no command,etc)
  . X'02             no response to FRMN1 number of RR's.
  . X'03             incorrect frame received (S with data, ...
  .                  ..., U with data, FTMR without 3 bytes).
  . X'04             incorrect frame received (I too long)
  . X'05             no response to FRMN1 number of RNR's.
  . X'08             incorrect frame received (NS not valid)
  . X'09             no answer to SABMNUM SABM's, switched link.
  . X'0F             DM received
  . X'2F             SABM received
  . X'43             DISC received
  . X'63             UA received
  . X'87             FRMR received
 --------------------------------------------------------------.
  03           Switched Link problems.
 --------------------------------------------------------------.
  04           NS Request General Errors.
  . x'01           Unknown Request.
 --------------------------------------------------------------.
  05           NS Connect Request Error.
  . X'02      M      packet too long.                   (F)
  . X'0F             No free virtual Circuit available.
  . X'10      M      Remote NSAP: Packet too short (No RNL)
  . X'11      M                   length = 0.           (F)
  . X'12      M                   length > 12.          (F)
  . X'13      M                   too short. (RNSAP < RNL)(F)
  . X'14      M                   IDP not 460021
  . X'20      M      Local NSAP : Packet too short (No LNL)
  . X'21      M                   length = 0.           (F)
  . X'22      M                   length > 32.          (F)
  . X'23      M                   too short. (LNSAP < LNL)(F)
  . X'24      M                   IDP ERROR (not 460021)
  . X'30      M      Destination phone number: NO DPL.  (F)
  . X'31      M                       LEASED - lng not 0
  . X'32      M                       PSTN   - lng = 0.
  . X'33      M                       PSTN   - lng > 20.(F)
  . X'34      M                       PSTN   - V25B(3720/5)
  . X'35      M                       PSTN   - NO SWITCH TY
  . X'36      M                       PSTN   - INVALID S.T.
  . X'37      M                       PSTN   - DPN < DPL(F)
  . X'40      M      CBT Type ID : Too Short (No CTL)   (F)
  . X'41      M                    length = 0.          (F)
  . X'42      M                    length > 15.         (F)
  . X'43      M                    too short (CBTID < CTL)(F)
  . X'50      M      Local DTE address : Too short (No LDL)
  . X'51      M                          length = 0.    (F)
  . X'52      M                          lng > 2. Leased(F)
  . X'53      M                   PSTN - lng < 2
  . X'54      M                   PSTN - lng > 20.      (F)
  . X'55      M                          too short(LDT < LDL)
  . X'56      M                 S.PSTN - NOT ALFANUM DTE
  . X'57      M                 S.PSTN - FIRST CHAR]='9'
  . X'58      M      Remote DTE address : Switched line.
  . X'59      M      Remote DTE address : < min.
  . X'5A      M      Remote DTE address : > max.
  . X'5B      M      Remote DTE address : not enough.
  . X'5C      M      Remote DTE address : non alpha.num.
  . X'60             Connect-Out in progress.
  . X'61             Already connected.
  . X'70      SAG    NSAP check, remote length error.
  . X'71      SAG    NSAP check, remote byte   error.
  . X'72      SAG    NSAP check, local  length error.
  . X'73      SAG    NSAP check, local  byte   error.
  . X'74      SAG    NSAP check, remote = 0, local not.
  . X'75      SAG    NSAP check, local = 0, remote not.
 --------------------------------------------------------------.
  06           NS Connect Response Error.
  . X'01             Packet too short.                  (F)
  . X'02      M      Packet too long.                   (F)
  . X'03      M      NO MORE DATA IN PIU (GETTING PNL)
  . X'04      M      Responding NSAP length = 0.        (F)
  . X'05      M      Responding NSAP length > 12.       (F)
  . X'06      M      NO MORE DATA IN PNSAP (PNSAP < PNL)
  . X'07      M      PNSAP IDP INCORRECT (not 460021)
  . X'08      C      NS Int. not in CON-IN in Progress.
  . X'09      C      Virtual Circuit not established.
  . X'E7      SAG    NSAP check, local length = 0.   ex-x'0A
  . X'E7      SAG    NSAP check, local length error. ex-x'0B
  . X'E7      SAG    NSAP check, local byte error.   ex-x'0B
 --------------------------------------------------------------.
  07           NS Data Request Error.
  . X'01             Packet too short.                  (F)
  . X'02      M      Packet too long. (More than 8KB).  (F)
  . X'03      M      0 DATA IN DATA REQUEST.            (F)
  . X'04             no NS-Connect issued.
  . X'05             VC not established (yet).
  . X'06             PSDU exceeds 8k bytes.             (F)
 --------------------------------------------------------------.
  08           NS Reset Request Error.
  . X'01             Packet too short.                  (F)
  . X'02      M      Packet too long.                   (F)
  . X'03      M      NO DATA GETING ORIGINATOR
  . X'04      M      BAD ORIGINATOR (not CBT)
  . X'05      M      No Data GETING CAUSE
  . X'06      M      No Data GETING DIAG.
  . X'07             Virtual Circuit not established
  . X'08             NS Int. not in Connected State.
 --------------------------------------------------------------.
  09           NS Reset Response Error.
  . X'01      M      Invalid MSG Length of Reset Resp   (F)
  . X'02      C      Virtual Circuit not established
  . X'03      C      NS Int. not in Reset IN in Progress
 --------------------------------------------------------------.
  0A           NS Disconnect Request Error.
  . X'01             Packet too short.                  (F)
  . X'02      M      Packet too long.                   (F)
  . X'03      M      NO DATA GETING ORIGINATOR
  . X'04      M      BAD ORIGINATOR (not CBT)
  . X'05      M      ERROR GETING CAUSE (NO DATA)
  . X'06      M      ERROR GETING DIAG. (NO DATA)
 --------------------------------------------------------------.
  0B           X.25 Protocol Error.
  . X'06             TC - unexpected RESET Request
  . X'07             TC - unexpected RESET Confirmation
  . X'08             TC - unexpected CALL Connected
  . X'09             TC - unexpected Incomming CALL
  . X'0A             CBO - I.C., NSAP not found.
  . X'0B             CBO - I.C., PU status error.
 --------------------------------------------------------------.
  0C           Internal Error.
  . X'01      SAG    end of Buffer Pool.
  . X'02             invalid Generate Indication Request.
  . X'03      M      INCORRECT TACBID
  . X'04      M      PIU PONTER IS NULL
  . X'05      M      TEST PIU ERROR. FREEBIT=0.
  . X'06      M      TEST PIU ERROR. C2 ERROR
  . X'07      M      LENGTH PIU ERROR
 --------------------------------------------------------------.
  0D           TC Error.
  . X'01      C      TAOPER from VCM not valid
  . X'02      C      Return from XGET with no PACKET
  . X'03      C      Application Not Active
  . X'04      C      Error Return from Simulator
  . X'05      C      NS Code to Build Message Invalid
  . X'06      C      Window Closed TO Expired
  . X'07      C      NS not in CONN State for Host data
  . X'08      C      NS not in CONN State for Net  data
  . X'09      C      Virtual Circuit Not Established
  . X'0A      C      Unexpected RU
  . X'0B      C      No PIU provided after XGET
  . X'0C      C      No PIU provided after HGET
  . X'0D      C      No RSP PIU provided by Simulator
 --------------------------------------------------------------.
  0E           VCM Error.
  . X'01     CMVNEI  Ana CC, not enough data for DTE addr.
  . X'02     CMVNEI  Ana CC, facilities length exceeds max.
  . X'03     CMVNEI  Ana CC, not enough data for fac.length
  . X'04     CMVNEI  Ana CC, Call User Data found.
  . X'05     CMVNEI  Ana CC, Fclty Marker 2d byte not found
  . X'06     CMVNEI  Ana CC, non valid Fclty Marker 2d byte
  . X'07     CMVNEI  Ana CC, Unknown Class-A Facility code.
  . X'08     CMVNEI  Ana CC, Called Line Addr Mdfy Ntfy par
  . X'09     CMVNEI  Ana CC, Unknown Class-B Facility code.
  . X'0A     CMVNEI  Ana CC, Pkt size neg. 1-st parm miss
  . X'0B     CMVNEI  Ana CC, CALLED DTE packet size < min.
  . X'0C     CMVNEI  Ana CC, CALLED DTE packet size >= max.
  . X'0D     CMVNEI  Ana CC, Pkt size neg. 2-nd parm miss
  . X'0E     CMVNEI  Ana CC, CALLING DTE packet size < min.
  . X'0F     CMVNEI  Ana CC, CALLING DTE packet size >= max
  . X'10     CMVNEI  Ana CC, Wdw size neg. 1-st parm miss
  . X'11     CMVNEI  Ana CC, CALLED DTE window not valid.
  . X'12     CMVNEI  Ana CC, Wdw size neg. 2-nd parm miss
  . X'13     CMVNEI  Ana CC, CALLING DTE window not valid.
  . X'14     CMVNEI  Ana CC, Class-C Facility code found.
  . X'15     CMVNEI  Ana CC, Class D Facility not "PROT".
  . X'16     CMVNEI  Ana CC, Prot Fac : no data after code.
  . X'17     CMVNEI  Ana CC, Prot Fac : nul field length.
  . X'18     CMVNEI  Ana CC, Prot Fac : not enough data.
  . X'19     CMVNEI  Ana CC, idem for Throughput Class Negotiatio
  . X'1A     CMVNEI  Ana CC, Called Addr Ext : no data after code
  . X'1B     CMVNEI  Ana CC, Called Addr Ext : nul field length.
  . X'1C     CMVNEI  Ana CC, Called Addr Ext : not enough data.
  . X'1D     CMVNEI  Ana CC, Input  x42 in x0F > in x0B.
  . X'1E     CMVNEI  Ana CC, Output x42 in x0F > in x0B.
  . X'1F     CMVNEI  Ana CC, Input  x43 in x0F > in x0B.
  . X'20     CMVNEI  Ana CC, Output x43 in x0F > in x0B.
  . X'21     CMVNEI  Ana IC, no data after ITP in IC.
  . X'22     CMVNEI  Ana IC, not enough data for DTE addr.
  . X'23     CMVNEI  Ana IC, no Facilities in IC.
  . X'24     CMVNEI  Ana IC, null facilities length in IC.
  . X'25     CMVNEI  Ana IC, facilities length > 110.
  . X'26     CMVNEI  Ana IC, packet too short for Fac. lng
  . X'27     CMVNEI  Ana IC, unknown Class-A facility code.
  . X'28     CMVNEI  Ana IC, not enough data for Called Lin
  . X'29     CMVNEI  Ana IC, Facility Marker 2d byte miss
  . X'2A     CMVNEI  Ana IC, non valid Fclty. Marker 2-nd b
  . X'2B     CMVNEI  Ana IC, Unknown Class-B Facility code.
  . X'2C     CMVNEI  Ana IC, not enough data for Pkt size n
  . X'2D     CMVNEI  Ana IC, CALLED DTE packet size < min
  . X'2E     CMVNEI  Ana IC, CALLED DTE packet size > max
  . X'2F     CMVNEI  Ana IC, Pkt size 2-nd parameter miss
  . X'30     CMVNEI  Ana IC, CALLING DTE packet size < min
  . X'31     CMVNEI  Ana IC, CALLING DTE packet size > max
  . X'32     CMVNEI  Ana IC, window size neg. 1-st par miss
  . X'33     CMVNEI  Ana IC, non valid CALLED DTE pkt wdw
  . X'34     CMVNEI  Ana IC, window size neg. 2-nd par miss
  . X'35     CMVNEI  Ana IC, non valid CALLING DTE pkt wdw
  . X'36     CMVNEI  Ana IC, Class-C Facility code found.
  . X'37     CMVNEI  Ana IC, Unknown Class-D Fclty code fou
  . X'38     CMVNEI  Ana IC, Calling Addr Ext 1-st parm mis
  . X'39     CMVNEI  Ana IC, Calling Addr Ext null 1-st par
  . X'3A     CMVNEI  Ana IC, Calling Addr Ext 1-st parm > m
  . X'3B     CMVNEI  Ana IC, Calling Addr Ext 2-nd parm mis
  . X'3C     CMVNEI  Ana IC, Calling NSAP not found.
  . X'3D     CMVNEI  Ana IC, Called Addr Ext 1-st parm miss
  . X'3E     CMVNEI  Ana IC, Called Addr Ext null 1-st parm
  . X'3F     CMVNEI  Ana IC, Called Addr Ext 1-st parm > ma
  . X'40     CMVNEI  Ana IC, Called Addr Ext 2-nd parm miss
  . X'41     CMVNEI  Ana IC, Called NSAP not found.
  . X'42     CMVNEI  Ana IC, Call User Data field not found
  . X'43     CMVNEI  Ana IC, Protocol id <> x'CA.
  . X'44     CMVNEI  Ana IC, Protocol id length > 8.
  . X'45     CMVNEI  Ana IC, Not enough data for CUG.
  . X'46     CMVNEI  Ana IC, Not enough data for RCH.
  . X'47     CMVNEI  Ana IC, No data after Prot. Fac. code
  . X'48     CMVNEI  Ana IC, Null Facility Prot. Length.
  . X'49     CMVNEI  Ana IC, Not enough data for Prot. Fac.
  . X'4A     CMVNEI  Ana IC, idem for Throughput Class Negotiatio
  . X'61  Input pkt length (U3TCNT) < 3 bytes.
  . X'62  Input pkt with invalid GFI Q or D bits.
  . X'63  Input pkt with unmatching GFI module.
  . X'64  Input pkt received in INOP status.
  . X'65  Received unknown pkt type.
  . X'66  Received DAFC pkt in no valid status.
  . X'67  Data pkt too short.
  . X'68  Data pkt too large.
  . X'69  Received RR/RNR pkt with M bit on.
  . X'6A  Unknown DFC pkt.
  . X'6B  Invalid PR received.
  . X'6C  Invalid PS received.
  . X'6D  Receive window exceeded.
  . X'6E  Received unexpected RESET CONF.
  . X'6F  Received unexpected CLEAR CONF.
  . X'70  Received CLEAR IND w/o cause & diag.
  . X'71  Received CALL IND in no CRDY status.
  . X'73  Received unexpected CALL CONNECTED.
  . X'77  Input pkt after CLEAR IND.
  . X'78  Received RESET w/o cause & diag.
  . X'7D  Unresponded RESET REQ.
  . X'7E  Unresponded CALL REQ.
  . X'7F  Host RESET, DISABLE or DISCONTACT req.
  . X'81  Invalid interface COMMAND or DATA req.
  . X'82  Invalid code for TC entry.
  . X'83  Invalid register for TC entry.
  . X'84  Invalid PUCB status for ENABLE.
  . X'85  Invalid PUCB status for CONTACT.
  . X'86  Invalid PUCB status for DISCONTACT.
  . X'87  Invalid HPUT TC request.
  . X'88  Invalid XGET/XPUT TC request.
  . X'89  Invalid HRSP TC request.
  . X'8A  Invalid TC HANG request.
  . X'8B  Invalid TC FREE request.
  . X'8C  XCALL, network not active.
  . X'8D  XCALL, PUCB not in APCT status.
  . X'8E  XCALL, no logical channel free.
  . X'8F  XCALL, line with call established.
  . X'90  XDISC, network not active.
  . X'91  XDISC, PU not in APCT status.
  . X'92  XDISC, line w/o call established.
  . X'93  XCALLA, network not active.
  . X'94  XCALLA, PU not in APCT status.
  . X'95  XCALLA, VCCB not linked.
  . X'96  XCALLA, not in Call Ind Resp pend stat.
  . X'97  XRSTF, network not active.
  . X'98  XRSTF, PU not in APCT status.
  . X'99  XRSTF, VCCB not linked.
  . X'9A  XRSTF, not in Reset Ind resp pend stat.
  . X'9B  XRSTR, network not active.
  . X'9C  XRSTR, PU not in APCT status.
  . X'9D  XRSTR, VCCB not linked.
  . X'9E  XRSTR, no DRDY, no RSTI status.
  . X'9F  XDIAL, PU not in APCT status.
  . X'A0  XDIAL, no switched network.
  . X'A1  XDIAL, Net active, net_type S, ns_conn D.
  . X'A2  XDIAL, Net_type or ns_conn no valid.
  . X'A3  XDIAL, Net dialing out, net_type S, ns_conn S o D
  . X'A4  XDIAL, 'dial in' in progress, ns_conn D.
  . X'A5  XDIAL, Real line not in MFC (activate pu).
  . X'A6  XDIAL, Xio not for real line.
  . X'A7  XDIAL, Any other rc from xio.
  . X'A8  XDIAL, Net activated by a DIAL IN, x25 call ind
  .       for another cbt, ns_conn (xdial) rejected.
  . X'A9  XDIAL, Net inact,L1 up, net_type 'S', ns_conn 'D'
  . X'AA  XDIAL, Net inact-L1 up, net_type/ns_conn no valid
  . X'AB  XDISC, VCCB in invalid status.
  . X'FF  XIO rejected by CMVVCM.
 --------------------------------------------------------------.
  0F           PLM Error.
  . X'74     CMVPLM RECEIVED UNSOLICITED RESTART CONF
  . X'75     CMVPLM RECEIVED UNEXPECTED RESTART.
 --------------------------------------------------------------.
  10           MLC Error.
  . X'92           PLM DISABLED.
  . X'93           PLM req 'take net down' inactivity t.o.
  . X'94           PLM req 'take net down' call ind t.o.
  . X'A0           NO STATUS CHANGE, NO DATA AVAILABLE
  . X'A1           CMD CONTACT RET COD DLC UNKNOWN.
  . X'A1           CMD SENDATA RET COD DLC UNKNOWN
  . X'A1           CMD DISCONTACT RET COD DLC UNKNOWN.
  . X'A1           CMD RESET(DISCONTACT) RET COD DLC UNKNOWN
  . X'A1           CMD ENABLE RET COD DLC UNKNOWN.
  . X'A1           CMD DISABLE RET COD DLC UNKNOWN.
  . X'A2           CMD ENABLE NOT ACCEPTED BY DLC.
  . X'A2           CMD CONTACT NOT ACCEPTED BY DLC.
  . X'A2           CMD SENDATA NOT ACCEPTED BY DLC.
  . X'A3           NO PKT VALIDATED, NO INPUT PKT.
  . X'A4           INCORRECT STATUS CHANGE.
  . X'A8           MLC INTERNAL ERROR.  PAQUETES
  . X'A9           MLC INTERNAL ERROR.  MLCFREE
  . X'AE           MLC INTERNAL ERROR.  DISCPRO

 =================== 011294. === CNM.USERS.CLISTS(NSCAUDIA) ====

MERVA library, including SH12-6157-01, MERVA/ECO Installation and User's Guide.
Ep ! site under construction. Escriu-me ! Actualitzat el 23 de Abril de 2004. Uf !