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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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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