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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

# Meaning Modem Answer
0000 request accepted  
0001 NCPI not supported by current protocol, NCPI ignored  
0002 flags not supported by current protocol, flags ignored  
0003 alert already sent by another application  
 
1001 too many applications  
1002 logical block size too small, must be at least 128 bytes  
1003 buffer exceeds 64k byte  
1004 message buffer size too small, must be at least 1024 bytes  
1005 maximum number of logical connection not supported  
1006 reserved  
1007 the message could not be accepted due to an internal busy condition  
1008 OS resource error (e.g., no memory)  
1009 CAPI not installed  
100A controller does not support external equipment  
100B controller does only support external equipment  
 
1101 illegal application number  
1102 illegal command or subcommand or message length less than 12 octets  
1103 queue is full  
1104 queue is empty  
1105 queue overflow  
1106 unknown notification parameter  
1107 internal busy condition  
1108 OS resource error (e.g., no memory)  
1109 CAPI not installed  
110A controller does not support external equipment  
110B controller does only support external equipment  
 
2001 message not supported in current state  
2002 illegal controller/PLCI/NCCI  
2003 out of PLCI  
2004 out of NCCI  
2005 out of LISTEN  
2006 out of FAX resources  
2007 illegal message parameter coding  
 
3001 B1 protocol not supported  
3002 B2 protocol not supported  
3003 B3 protocol not supported  
3004 B1 protocol parameter not supported  
3005 B2 protocol parameter not supported  
3006 B3 protocol parameter not supported  
3007 B protocol combination not supported  
3008 NCPI not supported  
3009 CIP not supported  
300A flags not supported  
300B facility not supported  
300C data length not supported by current protocol  
300D reset procedure not supported by current protocol  
300E TEI assignment failed  
 
3301 protocol error layer 1  
3302 protocol error layer 2  
3303 protocol error layer 3  
3304 call was given to another application  
 
T.30 specific
3311 connecting not successful, remote is no G3 fax  
3312 connecting not successful, training not successful  
3313 disconnected before transfer, transfer mode not supported by remote  
3314 disconnected during transfer, remote abort  
3315 disconnected during transfer, remote procedure error  
3316 disconnected during transfer, local tx-data underrun  
3317 disconnected during transfer, local rx-data overflow  
3318 disconnected during transfer, local abort  
3319 illegal parameter coding (e.g., SFF coding error)  
 
Network specific
3481 unassigned number  
3482 no route to specified transit network  
3483 no route to destination  
3486 channel unacceptable NO DIALTONE
3487 call awarded and being delivered in an established channel  
3490 normal call clearing  
3491 user busy BUSY
3492 no user responding NO ANSWER
3493 no answer from user NO ANSWER
3495 call rejected BUSY
3496 number changed  
349A non-selected user clearing BUSY
349B destination out of order  
349C invalid number format  
349D facility rejected  
349E response to STATUS ENQ.  
349F normal, unspec.  
34A2 no circuit/channel available BUSY
34A6 network out of order NO DIALTONE
34A9 temporary failure NO DIALTONE
34AA switch equipment congestion NO DIALTONE
34AB access information discarded  
34AC required circuit/channel not available NO DIALTONE
34AF resources unavailable BUSY
34B1 quality of service unavailable  
34B2 required facility not subscribed  
34B9 bearer capability not authorized NO DIALTONE
34BA bearer capability not present NO DIALTONE
34BF service/option not available  
34C1 bearer capability not implemented NO DIALTONE
34C2 channel type not implemented  
34C5 req. facility not implemented  
34C6 only restricted digital info available  
34CF service/option not available  
34D1 invalid call reference value  
34D2 ident. channel non-existent  
34D3 a suspended call exists, but this call identity does not  
34D4 call identity in use  
34D5 no call suspended NO DIALTONE
34D6 call having the requested call identity has been cleared  
34D8 incompatible destination NO ANSWER
34DB invalid transit network  
34DF invalid message NO DIALTONE
34E0 mandantory info element missing NO DIALTONE
34E1 message type non-existent or not implemented NO DIALTONE
34E2 message not compatible with call state/message type non-existent or not impl. NO DIALTONE
34E3 info element non-existent or not implemented NO DIALTONE
34E4 invalid info element contents NO DIALTONE
34E5 message incompatible with call state  
34E6 recovery on timer expiry NO DIALTONE
34EF protocol error NO DIALTONE
34FF interworking, unspecified  
 
Modem specific
3500 normal end of connection  
3501 carrier lost  
3502 negotiation error, no remote error correcting modem  
3503 no answer to protocol request  
3504 remote modem only works in synch. mode  
3505 framing failure  
3506 protocol negotiation failure  
3507 other modem sent bad protocol request  
3508 synch.info (data or flags) missing  
3509 normal end of connection from remote modem  
350A no answer from remote modem  
350B protocol error  
350C error on compression  
350D no connect (timeout ot wrong modulation)  
350E no protocol fallback allowed  
350F no modem or fax on requested number  
3510 handshake error  
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