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Handbuch ELSA TanGo 1000
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Error messages
 

In the event of errors, the contents of the registers S154 and S155 return error codes which may be used to localize the problem. These registers can be read using the commands ATS154? or ATS155?.
Error codes

S154/S155

Description Cause and possible correction
AT-level error group
001/001 Establishment of connection aborted by character input during establishment Input of characters during establishment of connection not permitted. If the input of characters is to be permitted during call establishment, bit 6 must be set in register S14 (polling enabled during establishment of connection).
001/003 Call not (no longer) present (with ATA or ATO) Opposite station has hung up or another unit has answered the call.
001/004 T-Online protocol error at the serial port Reestablish the connection.
001/005 Connection aborted by ATZ The command ATZ in the command phase causes the abort of an existing connection.
001/006 Inactivity timer elapsed (connection aborted) No data was sent for the period of time set in register S30 or using the command AT\Tn .
001/007 Establishment of connection aborted by DTR = off The DTR signal was deactivated, e.g. by the terminal program.
001/009 Establishment of connection aborted by ATH Establishment of connection canceled.
001/010 Establishment of connection aborted by locking of dial numbers The dial number is not approved. See AT$INCB regarding dial number locking.
Local error messages
051/001 Error in establishment of D channel level 1 Check the cables and the ISDN-S0connection and remove additional ISDN terminal units from S0 to exclude other possible sources of errors. If applicable, test the terminal adapter directly at the NT (network terminator).
051/002 Error in establishment of D channel level 2 Check the cables and the ISDN-S0connection and remove additional ISDN terminal units from S0 to exclude other possible sources of errors. If applicable, test the terminal adapter directly at the NT (network terminator).
051/003 Error in establishment of B channel level 1 Check the B channel protocol of the opposite station.
051/004 Error in establishment of B channel level 2  
051/005 Abort of D channel level 1 Check the cables and the ISDN-S0connection and remove additional ISDN terminal units from S0 to exclude other possible sources of errors. If applicable, test the terminal adapter directly at the NT (network terminator).
051/006 Abort of D channel level 2 Check the cables and the ISDN-S0connection and remove additional ISDN terminal units from S0 to exclude other possible sources of errors. If applicable, test the terminal adapter directly at the NT (network terminator).
051/007 Abort of D channel level 3 Verify the selected D channel protocol (AT$IDP)
051/008 Connection aborted, B channel level 1 Connection aborted by the remote station
051/009 Connection aborted, B channel level 2 or possible connection error.
051/010 Connection aborted, B channel level 3 Reestablish the connection.
051/011 Restart of connection, B channel level 2 Connection error resulting in
051/012 Restart of connection, B channel level 3 restart - data loss possible.
051/013 B2 abort due to time-out T1 Register S30 timer elapsed, inactivity timer
ISDN error messages (valid for 1TR6 protocol)
052/000 Abort by network, no reason given or reason not translatable Dial again.
052/128 Normal end of connection The connection was correctly ended by both stations.
052/131 Service not available at own or remote connection or dialing of an

incorrect number

Check the dial number and the enabling of the desired services (also applies to PBX systems).
052/138 Own connection is busy. Connection is in use by other terminal devices. End existing connection if necessary.
052/144 Semi-permanent connection (SPC) not supported by network SPC must be requested from network operator.
052/145 Requested service not available Service must be requested from network operator.
052/160 Outgoing connection blocked Have blockage removed by network operator.
052/161 Remote station busy Dial again later.
052/165 Semi-permanent connection (SPC) not permitted between these subscribers SPC must be requested from network operator.
052/181 Target number, service or service characteristic incorrect Check the dial number and the enabling of the desired services (also applies to PBX systems).
052/184 Target dial number has changed Obtain new number from the remote station.
052/185 From remote terminal unit: Not operational Check the operational readiness of the remote station.
052/186 Remote terminal unit does not answer Check the operational readiness of the remote station and the terminal selection digit of the dial number.
052/187 Message from remote terminal unit: Unit busy Dial again later.
052/189 Target subscriber: Blocked against incoming connections Check with remote station regarding blockage.
052/190 Target subscriber rejected connection Check with remote station.
052/217 Network bottleneck (e.g. congestion) Dial again later.
052/218 Rejected or disconnected by remote terminal unit Dial again later or check with remote station.
052/240 Local procedure error (protocol fault) Dial again.
052/241 Remote procedure error (protocol fault)  
Error codes S154/S155 Description
ISDN error messages (valid for DSS1 protocol)
053/001 Dial number is not assigned
053/002 No path to the requested transfer network
053/003 No path available to destination
053/006 Channel not accepted
053/016 Normal call trigger
053/017 Remote station busy
053/018 No response from remote station
053/019 Remote station does not answer
053/021 Call rejected
053/022 Dial number has changed
053/027 Remote station not operational
053/028 Incorrect number
053/029 Service feature rejected
053/034 No channel available
053/038 ISDN network not operational
053/041 Temporary fault
053/042 ISDN network overloaded
053/044 Channel or service not available
053/047 Service not available
053/049 Service not available
053/050 Requested service not ordered
053/057 Service feature not permitted
053/058 Service feature not available
053/063 Service or option not available
053/065 Service not available
053/066 Channel type not implemented
053/069 Requested characteristic does not exist
053/070 Data transfer service available only
053/079 Service or option does not exist
053/088 Remote station does not support requested service
053/091 Invalid transmission network selection
053/127 Unknown ISDN error

Clocking for syn- TCK = Transmit Clock

chronous operation RCK = Receive Clock

The clock output will be effected according to the CONNECT bit rate after the establishment of a connection.

Copyright © 1997 ELSA GmbH, Aachen (Germany)