Call Termination Reason Codes

0

INVALID DISCONNECT REASON

1

UNALLOCATED NUMBER
(Because the

2

NO ROUTE TO SPECIFIED NETWORK

3

NO ROUTE TO DESTINATION

[Sonus codes 138 and 139 are mapped to this ID. This mapping is performed before ISUP Release Message is sent. The "underlying" Sonus code is placed into accounting record.]

(The

• No routes are configured on PSX for this destination.
• The PSX loses connectivity to Oracle DB server and hence is unable to perform routing)

4

SEND SPECIAL INFO TONE

5

MISDIALED TRUNK PREFIX

6

CHANNEL UNACCEPTABLE

7

CALL AWARDED

8

PREEMPTION

9

PREEMPTION - CIRCUIT RESERVED

12

VALUE NOT CODED

16

NORMAL ROUTE CLEARING
[ISUP codes 12, 32, and 36 are mapped to this ID]

17

USER BUSY

18

NO USER RESPONDING

(The SBC may release a call with this cause value if:

• The CAS SSP that is executed on an egress call does not have WAIT ANSWER configured as the last step in the sequence. This token is typically configured to await an off hook at the Far-End. In this case, this token is performed by default with a 30 second timeout. If this timer expires then this code is returned.
• ISDN User Part (ISUP) for an Egress Call releases a call because of an Address Complete Message (ACM) timeout from the SGX. In this case, the SGX forwards Q.931 code 31 (NORMAL UNSPECIFIED) to the PSTN switch.
• In general, SBC times out waiting for an ISUP ACM or ALERTING or CON message after sending Initial Address Message (IAM) SETUP)

19

NO ANSWER FROM USER

(SBC may release a call with this cause value if ISUP for an egress call releases call because of ANM timeout from SGX. In this case, the SGX forwards Q.931 code 102 (RECOVERY ON TIMER EXPIRY) to PSTN switch)

20

SUBSCRIBER ABSENT

21

CALL REJECTED

22

NUMBER CHANGED

23

UNALLOCATED DESTINATION NUMBER

24

UNKNOWN BUSINESS GROUP

25

EXCHANGE ROUTING ERROR

26

MISROUTED CALL TO PORTED NUMBER
(The SBC may release a call with this cause value if:

• An LNP translation produces a subscriber that is in a state of transition
• An LNP translation produces a subscriber that is in a state of ported out
  This could occur either when the PSX initiates the LNP query to the SCP database, or when the PSX receives a policy request where the translation has been performed by a downstream switch.)

27

DESTINATION OUT OF ORDER

28

INVALID NUMBER FORMAT

(The SBC may release a call with this cause value if LNP translation is performed by a downstream switch and General Address Parameter digits sent to the PSX are in an incorrect format, that is, either too many digits or the number type is incorrect.)

29

FACILITY REJECTED

30

RESPONSE TO STATUS ENQUIRY

(ISUP specific and thus not applicable to ISDN, H323, or SIP calls.)

31

NORMAL UNSPECIFIED

[Sonus codes 133, 141, 144, and 145 are mapped to this ID. Mapping is performed before the ISUP Release Message is sent out. The "underlying" Sonus code is placed into the accounting record.]

[ISUP codes 6, 7, 24, and 25 are mapped to this ID]

(The SBC may release a call with this cause value if:

• ISUP circuits were reset via CLI command, causing all calls on those circuits to be brought down.
• ISDN circuits were reset via CLI command, causing all calls on those circuits to be brought down.
• ISDN Channels were restarted by the Far-End switch bringing down all calls on those circuits.
• CAS circuits were reset via CLI command, causing all calls on those circuits to be brought down.
• Any other CLI command, such as a command to take a T1 or CNS out of service, causes all calls on those circuits to go down.
• An ISUP Continuity Test timed out.
• ISUP circuits were reset by the Far-End switch.
• Calls were cleared by the SGX because of protocol time-outs.)

32

VALUE NOT CODED

34

NO CIRCUIT AVAILABLE

[Sonus codes 128, 140, and 142 are mapped to this ID. This mapping is performed before the ISUP Release Message is sent out. The "underlying" Sonus code is placed into the accounting record.]

The

• The
  Unable to show "metadata-from": No such page "_space_variables"
  attempts to initially route the call but none of the routes has any available circuits.
• Unable to show "metadata-from": No such page "_space_variables"
  attempts to reroute call ("crankback"), but is out of routes or out of routes with available circuits. An attempt to reroute call may have various causes. When this is the result of an attempted reroute, the cause value triggering the reroute is placed into accounting record.
• A
  Unable to show "metadata-from": No such page "_space_variables"
  software programming error occurred.

35

VALUE NOT CODED

36

VALUE NOT CODED

38

NETWORK OUT OF ORDER

The

• Gateway-to-Gateway Signaling Link to Far-End
  Unable to show "metadata-from": No such page "_space_variables"
  is lost due to network problems or CLI command. In either event, all calls to that
  Unable to show "metadata-from": No such page "_space_variables"
  are cleared with this disconnect reason.
• Gateway-to-Gateway Signaling Link to Far-End
  Unable to show "metadata-from": No such page "_space_variables"
  went down and then back up. Afterwards, the
  Unable to show "metadata-from": No such page "_space_variables"
  s audit all calls between them. Any mismatched calls are brought down with this disconnect reason.

39

PERM FM CONNECTION OOS

40

PERM FM CONNECTION OPERATIONAL

41

TEMPORARY FAILURE

[Sonus codes 131, 132, and 136 are mapped to this ID. This mapping is performed before the ISUP Release Message is sent out. The "underlying" Sonus code is placed into the accounting record.]

The

• Communication between
  Unable to show "metadata-from": No such page "_space_variables"
  and PSX is broken and Policy Requests from the
  Unable to show "metadata-from": No such page "_space_variables"
  to the PSX time out.
• A Policy Request issued from the
  Unable to show "metadata-from": No such page "_space_variables"
  to the PSX was rejected by the PSX because of corrupted data in the packet - an indication of possible network problems.
• A
  Unable to show "metadata-from": No such page "_space_variables"
  software programming error occurred.
• ISUP calls were brought down as a result of corrective action that was performed following a Circuit Query with a Far-End PSTN Switch.
• Connectivity to SS7 Gateway is lost and all active SS7 Calls in the
  Unable to show "metadata-from": No such page "_space_variables"
  are brought down.
• The
  Unable to show "metadata-from": No such page "_space_variables"
  received a UCIC ISUP Message from a Far-End PSTN Switch that contained a CIC of an active
  Unable to show "metadata-from": No such page "_space_variables"
  call.
• Call admission on
  Unable to show "metadata-from": No such page "_space_variables"
  is suspended due to CNS Failure, switchover, standby card synchronization, no NTP time, or other issues. All new call admission requests from other
  Unable to show "metadata-from": No such page "_space_variables"
  s over Gateway-to-Gateway signaling are released to originating gateway with this code.
• Catastrophic failure such as a CNS failure or a PNS failure occurs on a
  Unable to show "metadata-from": No such page "_space_variables"
  and all affected calls are released. The
  Unable to show "metadata-from": No such page "_space_variables"
  releases these calls back to the originating gateway over the gateway-to-gateway signaling link with this code.
• T8 Timer expires in ISUP. This timer expires if
  Unable to show "metadata-from": No such page "_space_variables"
  does not receive a COT message from previous switch within T8 Timer duration, when the IAM indicates that a COT is being performed.
  In general when
  Unable to show "metadata-from": No such page "_space_variables"
  is not getting responses from PSX, this indicates IP network congestion or PSX overload. Both are transient conditions that will resolve themselves, hence the use of this code to indicate a temporary failure situation.

42

SWITCHINGEQUIP CONGESTION

43

ACCESS INFORMATION DISCARDED
(The

44

REQUESTED CIRCUIT NOT AVAILABLE

45

ANSI PREEMPTION

46

PRECEDENCE CALL BLOCKED

47

RESOURCE UNAVAILABLE UNSPECIFIED[ISUP codes 39, 40, and 45 are mapped to this ID.]

49

QUALITY OF SERVICE UNAVAILABLE

50

REQUESTED FACILITY NOT SUBSCRIBED

51

CALL TYPE INCOMPATIBLE WITH SEREVICE

53

OUTGOING CALL BARRED CUG

54

CALL BLOCKED GROUP RESTRICTIONS

55

INCOMING CALL BARRED CUG
(

57

BEARER CAPABILITY NOT AUTHORIZED

58

BEARER CAPABILITY PRESENTLY NOT AVAILABLE

62

INCONSISTENT OUTGOING SUBSCRIBER CLASS

63

SERVICE OR OPTION NOT AVAILABLE UNSPECIFIED

[Sonus code 137 is mapped to this ID. This mapping is performed before the ISUP Release Message is sent out. The "underlying" Sonus code is placed into the accounting record.]

[ISUP codes 49, 51, and 54 are mapped to this ID.]

65

BEARER CAPABILITY NOT IMPLEMENTED

66

CHANNEL TYPE NOT IMPLEMENTED

69

REQUESTED FACILITY NOT IMPLEMENTED

70

ONLY RESTRICTED DIGITAL INFO BEARER CAPABILITY AVAILABLE

79

SERVICE OR OPTION NOT IMPLEMENTED UNSPECIFIED[ISUP code 66 is mapped to this ID.]

80

VALUE NOT CODED

81

INVALID CALL REFERENCE

82

CHANNEL DOES NOT EXIST

83

SUSPENDED CALL NO IDENTITY

84

CALL IDENTITY IN USE

85

NO CALL SUSPENDED

86

CALL IDENTITY CLEARED

87

NOT MEMBER OF CUG

(

88

INCOMPATIBLE DESTINATION

90

NON-EXISTENT CUG

91

INVALID NETWORK SELECTION

95

INVALID MESSAGE UNSPECIFIED[ISUP codes 81, 82, 83, 84, 85, and 86 are mapped to this ID.]

96

MANDATORY INFORMATION ELEMENT MISSING

97

MESSAGE TYPE NON-EXISTENT OR NOT IMPLEMENTED

98

MSG TYPE NC NE OR NI(NC is NOT COMPATIBLE. NE is NON EXISTING. NI is NOT IMPLEMENTED. This code typically suggests an incompatibility in the network.)

99

IE NOT IMPLEMENTED

100

INVALID INFORMATION ELEMENT CONTENT

101

MSG NOT COMPATIBLE WITH STATE

102

RECOVERY ON TIMER EXPIRY(The

103

PARAMETER NOT IMPLEMENTED

110

UNRECOGNIZED PARAMETER

111

PROTOCOL ERROR UNSPECIFIED[ISUP codes 96, 98, 100, and 101 are mapped to this ID.]

[nttfcc ISUP code 102 is mapped to this ID.]

The

• The PSX could not find routes to a destination because they were filtered out due to protocol conformance errors, according to the conventions cited in GR-317/394.
• A CAS Call Establishment error that is not configured to be handled in the SSP occurs, causing CAS to release the call with this code.
• Another error in a CAS SSP/SCP configuration that is being used by a call causes the call to be released with this code.

127

INTERWORKING UNSPECIFIED

The

• Incoming CAS call goes on-hook while being established and event not configured on SSP.
• Incoming CAS call goes on-hook after being established.
• Outgoing CAS call goes on-hook after being established.

128

RESOURCES ALLOCATION FAILURE[This Sonus code is mapped to Q.931 ID 34.]

(The

• No PSTN circuits are available to hunt.
• The DSP call resources are exhausted.
• Call admissions to system are suspended due to event such as switchover, CNS switchover, etc.
• The
  Unable to show "metadata-from": No such page "_space_variables"
  memory resources are exhausted.)

129

CHANNEL COLLISION BACKOFF[This Sonus code is mapped to Q.931 ID 31.]

(The

130

INSUFFICIENT DESTINATION RESOURCES

[This 

(

131

RESOURCE FAILURE

[This

(

132

MODULE FAILURE

[This

(

133

MEDIA GATEWAY SERVICE GROUP EGRESS DISCONNECT

[This

(The

134

CONTINUITY CHECK FAILED, BACKOFF

[This

(The SBC may release a call with this cause value if a continuity check on an egress circuit fails, resulting in backoff and reattempt of the call on a different circuit.)

135

COLLISION REATTEMPT EXHAUSTED

[This

(The

136

CONTINUITY REATTEMPT EXHAUSTED

[This

(The

137

NO ROUTE FOR BEARER CAPABILITY

[This

(

138

NO ROUTE SIGNALING

[This Sonus code is mapped to Q.931 ID 3.]

(

139

NO ROUTE DIRECTION

[This

(

140

CIRCUIT ENDPOINT RESOURCE ALLOCATION FAILURE

[This

(The

141

DISCONNECT WITH NEW DESTINATION

[This

(The SBC may release a call with this cause value if the egress circuit is released while the ingress call is rerouted to a new destination, or the call is transferred.)

142

AUTOMATIC CONGESTION CONTROL PROCEDURE

[This

(The

• current congestion level
• Alternate Route versus Direct Route requirements
• Percentage of calls to be rerouted versus cancelled
  This release code indicates that this call was cancelled, rather than rerouted.)

143

ACC ALTERNATE ROUTE

[This

(The

• current congestion level
• Alternate Route versus Direct Route requirements
• Percentage of calls to be rerouted versus cancelled
  This release code indicates that this call was rerouted, or reattempted on an alternate route.)

144

PACKET LOSS EXCEEDS THRESHOLD

[This

(The

145

NO RTP OR RTCP PACKETS

[This

(The

146

HOP COUNTER EXHAUSTED

(The

147

CONVERSION FAILURE

(The

148

CPC_DISC_CONGESTION_REROUTE_NOT_PERMITTED

(The

149

CPC_DISC_

(The

150

CPC_DISC_NO_PSX_ROUTES

(The

151

CPC_DISC_SETUP_REQ_TIMER_EXPIRY

(The

152

CPC_DISC_GW_CONGESTED

(The remote

153

CPC_DISC_GLARE_OCCURRED

(The

154

CPC_DISC_NO_TERM_CIT_RCVD

(The

155

CPC_DISC_BUSY_EVERYWHERE

(The

156

CPC_DISC_REASON_UNKNOWN_RESOURCE_PRIORITY

(The

157

CPC_DISC_REASON_BAD_EXTENSION

(The

158

CPC_DISC_REASON_QUEUE_TIMEOUT

(The

159

CPC_DISC_REASON_FORBIDDEN

(The

161

CPC_DISC_REASON_QUEUEING_IMPOSSIBLE

(The

CPC_DISC_PDD_TIMER_EXPIRED

(The

CPC_DISC_TG_AUTH_FAIL

(The

CPC_DISC_TG_AUTH_FAIL_401_407

(If the request with credentials is rejected with non 401/407, the call is rejected with new internal cause code. This cause code can be mapped to any SIP error cause code. By default, it is mapped to SIP cause code 403. This cause code can be configured to map to any SIP error cause.)