What is cause 500 and where is it defined?

Q. I see lots of other constants in CiscoCallEv.java but none for 500:

  public static final int CAUSE_INTERWORKINGUNSPECIFIED = 127;

  public static final int CAUSE_CTIPRECEDENCEOUTOFBANDWIDTH = 129;

  public static final int CAUSE_REDIRECTED = 200;

  public static final int CAUSE_OUTBOUNDTRANSFER = 501;

  public static final int CAUSE_OUTBOUNDCONFERENCE = 502;

  public static final int CAUSE_INBOUNDTRANSFER = 503;

  public static final int CAUSE_INBOUNDCONFERENCE = 504;

  public static final int CAUSE_INBOUNDBLINDTRANSFER = 505;

  public static final int CAUSE_CTIMANAGER_FAILURE = 507;

  public static final int CAUSE_CALLMANAGER_FAILURE = 508;

It appears in the jtapi log like this:

1549: Apr 20 12:38:55.226 ADT %JTAPI-JTAPI-7-UNK:(P1-devuser2) 957495/1 CallCtlTermConnDroppedEv SEP000AB86A7B94 [#113] Cause:100 CallCtlCause:209 CiscoCause:500 FeatReason:16

1550: Apr 20 12:38:55.226 ADT %JTAPI-JTAPI-7-UNK:(P1-devuser2) 957495/1 ConnDisconnectedEv 6020::1 [#114] Cause:100 CallCtlCause:0 CiscoCause:500 FeatReason:16

1551: Apr 20 12:38:55.226 ADT %JTAPI-JTAPI-7-UNK:(P1-devuser2) 957495/1 CallCtlConnDisconnectedEv 6020::1 [#115] Cause:100 CallCtlCause:209 CiscoCause:500 FeatReason:16

What does it mean and where is it defined?

Appears in jtapi log like this:

1081: Apr 20 13:05:37.410 ADT %JTAPI-JTAPI-7-UNK:(P1-devuser2) 957496/1 TermConnCreatedEv SEP001819231713 [#54] Cause:0 CallCtlCause:0 CiscoCause:100 FeatReason:12

A. You may have an older version of  the cause codes:

CAUSE_NOERROR               0X00   (0)

CAUSE_INTERNALCAUSE   0X1F4 (500)

Q. I have a fairly new version:

Specification-Title: JTAPI

Specification-Version: 1.2

Specification-Vendor: Sun Microsystems, Inc..

Implementation-Title: CiscoJtapiClient

Implementation-Version: 10.5(1.10000)-2 Release

Implementation-Vendor: Cisco Systems, Inc

What classes are CAUSE_NOERROR and CAUSE_INTERNALCAUSE defined in?

I found CAUSE_NOERROR:

public interface CiscoCallEv extends CiscoEv, CallEv {

  public static final int CAUSE_NOERROR = 0;

But still don't know where CAUSE_INTERNALCAUSE is defined.

A. Should be in the latest JTAPI Interface Spec:

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/jtapi_dev/11_0_1/CUCM_BK_J2445637_00_jtapi-developers-guide_1101/Troubleshooting___Cisco_Unified_JTAPI.html