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Appendix D

Reason Codes


Introduction

The following table is in alphabetical listing of reason codes and their descriptions. These codes are defined in dpndef.h.

Note: For more information on the DPNSS mnemonics referenced below, see the DPNSS clearing/rejection cause codes in BTNR 188, section 4, annex 3.
Code

Hex

Decimal

Meaning

DPN_DIS_ACCESS_BARRED

0x141028

1314856

DPNSS mnemonic AB.

DPN_DIS_BUSY_DETECTED

0x14100C

1314828

"Place call" got busy tone.

DPN_DIS_CALL_FAILED

0x141037

1314871

DPNSS mnemonic REJ.

DPN_DIS_CALL_REJECTED

0x141036

1314870

DPNSS mnemonic REJ.

DPN_DIS_CHANNEL_BUSY

0x141038

1314872

DPNSS mnemonic REJ.

DPN_DIS_CHANNEL_OUT_OF_SERVICE

0x14102B

1314859

DPNSS mnemonic CHOS.

DPN_DIS_CONGESTION

0x14102D

1314861

DPNSS mnemonic CON.

DPN_DIS_DIAL_FAILURE

0x141008

1314824

Dial failed.

DPN_DIS_FACILITY_NOT_REGISTERED

0x14102F

1314863

DPNSS mnemonic FNR.

DPN_DIS_INCOMPATIBLE_SIC

0x141031

1314865

DPNSS mnemonic INC.

DPN_DIS_INVALID

0x141027

1314855

Invalid or unknown reason.

DPN_DIS_MESSAGE_ACK

0x141029

1314857

DPNSS mnemonic ACK.

DPN_DIS_MESSAGE_NOT_UNDERSTOOD

0x141032

1314866

DPNSS mnemonic MNU.

DPN_DIS_NAE_ERROR

0x141033

1314867

DPNSS mnemonic
NAE-E.

DPN_DIS_NETWORK_TERMINATION

0x141034

1314868

DPNSS mnemonic NT.

DPN_DIS_NO_CHANNELS

0x141039

1314873

DPNSS mnemonic REJ.

DPN_DIS_NORMAL_TERMINATION

0x141001

1314817

Clearing call in normal way.

DPN_DIS_NUMBER_UNOBTAINABLE

0x14102E

1314862

DPNSS mnemonic NU.

DPN_DIS_PRIORITY_FORCED_RELEASE

0x141035

1314869

DPNSS mnemonic PFR.

DPN_DIS_REMOTE_BARRED

0x141030

1314864

DPNSS mnemonic ICB.

DPN_DIS_REMOTE_NOANSWER

0x14100B

1314827

"Place call" got no answer.

DPN_DIS_ROUTE_OUT_OF_SERVICE

0x14103A

1314874

DPNSS mnemonic ROS.

DPN_DIS_SERVICE_TEMP_UNAVAILABLE

0x141040

1314880

DPNSS mnemonic STU.

DPN_DIS_SERVICE_UNAVAILABLE

0x141041

1314881

DPNSS mnemonic SU.

DPN_DIS_SIG_SYSTEM_INCOMPATIBLE

0x14103F

1314879

DPNSS mnemonic SSI.

DPN_DIS_SIGNAL_NOT_UNDERSTOOD

0x14103C

1314876

DPNSS mnemonic SNU.

DPN_DIS_SIGNAL_NOT_VALID

0x14103D

1314877

DPNSS mnemonic SNV.

DPN_DIS_SUBSCRIBER_INCOMPATIBLE

0x14103B

1314875

DPNSS mnemonic SI.

DPN_DIS_SUBSCRIBER_OUT_OF_SERVICE

0x14103E

1314878

DPNSS mnemonic SOS.

DPN_DIS_TRANSFERRED

0x141042

1314882

DPNSS mnemonic TRFD.

DPN_DIS_X21_DTE_UNREADY

0x141043

1314883

DPNSS mnemonic UNR.

DPN_DIS_X21_TERMINAL_IN_CNR

0x14102C

1314860

DPNSS mnemonic CNR.



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