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CAPI 2.0 Messages

These are common CAPI message and error codes listed by workgroup and expanded by V.110, 1.TR.6 and manufacturer-developed messages. All messages are shown as four hexadecimal digits (i.e., each ranging from '0' to 'F'). If a message starts with "33" (i.e., "33xx"), it usually hints at an installation problem with your ISDN board or telephone system. Error messages of the "34xx" variety are caused by a remote party or the ISDN net itself. In case no modem answer is supplied below, the modem returns a NO CARRIER signal.

CAPI 2.0 Messages

#MeaningModem Answer
0000request accepted 
0001NCPI not supported by current protocol, NCPI ignored 
0002flags not supported by current protocol, flags ignored 
0003alert already sent by another application 
 
1001too many applications 
1002logical block size too small, must be at least 128 bytes 
1003buffer exceeds 64k byte 
1004message buffer size too small, must be at least 1024 bytes 
1005maximum number of logical connection not supported 
1006reserved 
1007the message could not be accepted due to an internal busy condition 
1008OS resource error (e.g., no memory) 
1009CAPI not installed 
100Acontroller does not support external equipment 
100Bcontroller does only support external equipment 
 
1101illegal application number 
1102illegal command or subcommand or message length less than 12 octets 
1103queue is full 
1104queue is empty 
1105queue overflow 
1106unknown notification parameter 
1107internal busy condition 
1108OS resource error (e.g., no memory) 
1109CAPI not installed 
110Acontroller does not support external equipment 
110Bcontroller does only support external equipment 
 
2001message not supported in current state 
2002illegal controller/PLCI/NCCI 
2003out of PLCI 
2004out of NCCI 
2005out of LISTEN 
2006out of FAX resources 
2007illegal message parameter coding 
 
3001B1 protocol not supported 
3002B2 protocol not supported 
3003B3 protocol not supported 
3004B1 protocol parameter not supported 
3005B2 protocol parameter not supported 
3006B3 protocol parameter not supported 
3007B protocol combination not supported 
3008NCPI not supported 
3009CIP not supported 
300Aflags not supported 
300Bfacility not supported 
300Cdata length not supported by current protocol 
300Dreset procedure not supported by current protocol 
300ETEI assignment failed 
 
3301protocol error layer 1 
3302protocol error layer 2 
3303protocol error layer 3 
3304call was given to another application 
 
T.30 specific
3311connecting not successful, remote is no G3 fax 
3312connecting not successful, training not successful 
3313disconnected before transfer, transfer mode not supported by remote 
3314disconnected during transfer, remote abort 
3315disconnected during transfer, remote procedure error 
3316disconnected during transfer, local tx-data underrun 
3317disconnected during transfer, local rx-data overflow 
3318disconnected during transfer, local abort 
3319illegal parameter coding (e.g., SFF coding error) 
 
Network specific
3481unassigned number 
3482no route to specified transit network 
3483no route to destination 
3486channel unacceptableNO DIALTONE
3487call awarded and being delivered in an established channel 
3490normal call clearing 
3491user busyBUSY
3492no user respondingNO ANSWER
3493no answer from userNO ANSWER
3495call rejectedBUSY
3496number changed 
349Anon-selected user clearingBUSY
349Bdestination out of order 
349Cinvalid number format 
349Dfacility rejected 
349Eresponse to STATUS ENQ. 
349Fnormal, unspec. 
34A2no circuit/channel availableBUSY
34A6network out of orderNO DIALTONE
34A9temporary failureNO DIALTONE
34AAswitch equipment congestionNO DIALTONE
34ABaccess information discarded 
34ACrequired circuit/channel not availableNO DIALTONE
34AFresources unavailableBUSY
34B1quality of service unavailable 
34B2required facility not subscribed 
34B9bearer capability not authorizedNO DIALTONE
34BAbearer capability not presentNO DIALTONE
34BFservice/option not available 
34C1bearer capability not implementedNO DIALTONE
34C2channel type not implemented 
34C5req. facility not implemented 
34C6only restricted digital info available 
34CFservice/option not available 
34D1invalid call reference value 
34D2ident. channel non-existent 
34D3a suspended call exists, but this call identity does not 
34D4call identity in use 
34D5no call suspendedNO DIALTONE
34D6call having the requested call identity has been cleared 
34D8incompatible destinationNO ANSWER
34DBinvalid transit network 
34DFinvalid messageNO DIALTONE
34E0mandantory info element missingNO DIALTONE
34E1message type non-existent or not implementedNO DIALTONE
34E2message not compatible with call state/message type non-existent or not impl.NO DIALTONE
34E3info element non-existent or not implementedNO DIALTONE
34E4invalid info element contentsNO DIALTONE
34E5message incompatible with call state 
34E6recovery on timer expiryNO DIALTONE
34EFprotocol errorNO DIALTONE
34FFinterworking, unspecified 
 
Modem specific
3500normal end of connection 
3501carrier lost 
3502negotiation error, no remote error correcting modem 
3503no answer to protocol request 
3504remote modem only works in synch. mode 
3505framing failure 
3506protocol negotiation failure 
3507other modem sent bad protocol request 
3508synch.info (data or flags) missing 
3509normal end of connection from remote modem 
350Ano answer from remote modem 
350Bprotocol error 
350Cerror on compression 
350Dno connect (timeout ot wrong modulation) 
350Eno protocol fallback allowed 
350Fno modem or fax on requested number 
3510handshake error