Mappings and Disconnect Cause Values
This section provides information about H.323 and SIP disconnect cause values for RADIUS CDRs generated by the SBC.
SIP H.323 and Q.850 Mappings
This section provides tables that show the mappings between SIP Status and: H.323 Disconnect Reason, H.323 Release Complete Reason, and RAS error. It also shows the mapping for Q.850 cause to H.323 Release Complete Reason.
SIP Status to H.323 Disconnect Reason Mapping
| SIP Status | H.323 Disconnect Reason |
|---|---|
| 480 Temporarily Unavailable | No Bandwidth |
| 404 Not Found | Gatekeeper Resource |
| 404 Not Found | Unreachable Destination |
| 603 Decline | Destination Rejection |
| 505 Version Not Supported | Invalid Revision |
| 401 Unauthorized | No Permission |
| 503 Service Unavailable | Unreachable Gatekeeper |
| 480 Temporarily Unavailable | Gateway Resource |
| 400 Bad Request | Bad Format Request |
| 486 Busy Here | Adaptive Busy |
| 486 Busy Here | In Conference |
| 500 Internal Server Error | Undefined Reason |
| 486 Busy Here | Facility Call Deflection |
| 401 Unauthorized | Security Denied |
SIP Status to H.323 RAS Error Mapping
| SIP Status | H.323 RAS Error |
|---|---|
| 404 Not Found | Gatekeeper Resource |
| 401 Unauthorized | Invalid Permission |
| 503 Service Unavailable | Request Denied |
| 500 Internal Server Error | Undefined |
| 401 Unauthorized | Caller Not Registered |
| 305 User Proxy | Route Call to Gatekeeper |
| 500 Internal Server Error | Invalid Endpoint ID |
| 503 Service Unavailable | Resource Unavailable |
| 401 Unauthorized | Security Denial |
| 501 Not Implemented | QoS Control Not Supported |
| 484 Address Incomplete | Incomplete Address |
| 302 Moved Temporarily | Route Call to SCN |
| 485 Ambiguous | Aliases Inconsistent |
| 401 Unauthorized | Not Currently Registered |
SIP Status to H.323 Release Complete Reason Error Mapping
| SIP Status | H.323 RAS Error |
|---|---|
| 300 Multiple Choices | Undefined Reason |
| 401 Unauthorized | Security Denied |
| 402 Payment Required | Undefined Reason |
| 403 Forbidden | No Permission |
| 404 Not Found | Unreachable Destination |
| 405 Method Not Allowed | Undefined Reason |
| 606 Not Acceptable | Undefined Reason |
| 407 Proxy Authentication Required | Security Denied |
| 408 Request Timeout | Adaptive Busy |
| 409 Conflict | Undefined Reason |
| 410 Gone | Unreachable Destination |
| 411 Length Required | Undefined Reason |
| 414 Request-URI Too Large | Bad Format Address |
| 415 Unsupported Media Type | Undefined Reason |
| 420 Bad Extension | Bad Format Address |
| 480 Temporarily Unavailable | Adaptive Busy |
| 481 Call/Transaction Does Not Exist | Undefined Reason |
| 482 Loop Detected | Undefined Reason |
| 483 Too Many Hops | Undefined Reason |
| 484 Address Incomplete | Bad Format Address |
Q.850 Cause to H.323 Release Complete Reason Mapping
The table below describes how the Q.850 Causes and the H.323 release complete reasons are mapped internally on the SBC.
| Q.850 Cause | Numeric Code | H.323 Release Complete Reason |
|---|---|---|
| Not Route To Destination | 3 | Unreachable Destination |
| Normal Call Clearing | 16 | Destination Rejection |
| User Busy | 17 | In Conference |
| Subscriber Absent | 20 | Called Party Not Registered |
| Invalid Number Format | 28 | Bad Format Address |
| Normal Unspecified | 16 | Undefined Reason |
| No Circuit/Channel Available | 34 | No Bandwidth |
| Network Out of Order | 38 | Unreachable Gatekeeper |
| Temporary Failure | 41 | Adaptive Busy |
| Switching Equipment Congestion | 42 | Gateway Resource |
| Resource Unavailable | 47 | Gatekeeper Resource |
| Incompatible Destination | 88 | Invalid Revision |
| Interworking Unspecified | 111 | No Permission |
SIP-SIP Calls
The SBC maps SIP status codes and events to disconnect cause attribute values used by Cisco Systems Proxy Server (CSPS) accounting services.
| SIP Status Category/Event | CDR Disconnect Cause | Description |
|---|---|---|
| Undetermined reason | 0 | Undetermined reason |
| BYE | 1 | Normal clearing |
| 3xx: Redirection | 2 | Redirection |
| 4xx: Client Error | 3 | Client error |
| 5xx: Server Error | 4 | Server error |
| 6xx: Global Failure | 5 | Global error |
SIP-H.323 Calls with Interworking
For calls that require SIP-H.323 interworking, the SBC generates two sets of RADIUS CDRs: one for the SIP call-leg and one for the H.323 call leg. The values recorded in RADIUS Stop records for the disconnect cause depend on the nature and source of the call disconnect or rejection.
SIP Events and Errors
For calls rejected or disconnected because of SIP events and errors, the SBC records Q.850 cause values mapped from the SIP event/status code in the SIP CDR. For the H.323 CDR, the SIP status categories and events are mapped to Q.850 cause codes.
The entries in this table are determined by the SIP Status to H.323 Release Complete Reason Error Mapping.
| SIP Status Category/Event | SIP CDR Disconnect Cause | H.323 Disconnect Cause Value (Q.850) |
|---|---|---|
| BYE | 16—Normal call clearing | 16—Normal call clearing |
| 3xx | 23—Redirection to new destination | 16—Normal call clearing |
| 404 Not Found | 21—Call rejected | 3—No route to destination |
| 410 Gone | 21—Call rejected | 3—No route to destination |
| 403 Forbidden | 21—Call rejected | 111—Interworking unspecified |
| 408 Request Timeout | 21—Call rejected | 41—Temporary failure |
| 413 Request Entity Too Big | 21—Call rejected | 28—Invalid number format |
| 414 Request URI Too Large | 21—Call rejected | 28—Invalid number format |
| 420 Bad Extension | 21—Call rejected | 28—Invalid number format |
| 484 Address Incomplete | 21—Call rejected | 28—Invalid number format |
| 408 Request Timeout | 21—Call rejected | 41—Temporary failure |
| 480 Temporarily unavailable | 21—Call rejected | 41—Temporary failure |
| 486 Busy Here | 21—Call rejected | 17—User Busy |
| 401 Unauthorized | 21—Call rejected | 32—Normal unspecified |
| 407 Proxy Authentication Required | 21—Call rejected | 32—Normal unspecified |
| All other 4xx | 21—Call rejected | 16—Normal unspecified |
| 502 Bad Gateway | 38—Network out of order | 28—Invalid number format |
| 505 Bad Version | 38—Network out of order | 88—Incompatible destination |
| All other 5xx | 38—Network out of order | 16—Normal unspecified |
| 600 Busy Everywhere | 31—Normal unspecified | 41—Temporary failure |
| 603 Decline | 31—Normal unspecified | 31—Normal unspecified |
| 604 Does Not Exist Anywhere | 31—Normal unspecified | 3—No route to destination |
| All other 6xx | 31—Normal unspecified | 31—Normal unspecified |
H.323 Events and Errors
The Q.850 cause code value is recorded for the disconnect cause in the CDR for the H.323 call leg if the Q.850 cause is received. H.323 recommendations state that either Q.850 Cause of RelCompReason is mandatory for the RELEASE COMPLETE; the Cause information element (IE) is optional everywhere. The Cause IE and the ReleaseCompleteReason (part of the release complete message) are mutually exclusive.
If a Q.850 cause code is not received, the SBC records a Q.850 cause value mapped from the received ReleaseCompleteReason as defined in the table below.
The entries in this table are determined by the SIP Status to H.323 Disconnect Reason Mapping.
| H.323 ReleaseCompleteReason | H.323 CDR Disconnect Cause | SIP Status | SIP CDR Disconnect Cause |
|---|---|---|---|
| No Bandwidth | 34—No channel/circuit available | 480 Temporarily Unavailable | 21—Call rejected |
| Gatekeeper Resource | 47—Resource unavailable | 404 Not Found | 21—Call rejected |
| Unreachable Destination | 3—No route to destination | 404 Not Found | 21—Call rejected |
| Destination Rejected | 31—Normal unspecified | 603 Decline | 31—Normal unspecified |
| Invalid Revision | 88—Incompatible destination | 505 Version Not Supported | 38—Network out of order |
| No Permission | 111—Interworking unspecified | 401 Unauthorized | 21—Call rejected |
| Unreachable Gatekeeper | 38—Network out of order | 503 Service Unavailable | 38—Network out of order |
| Gateway Resource | 42—Switching equipment congestion | 480 Temporarily unavailable | 21—Call rejected |
| Bad Format Request | 28—Invalid number format | 400 Bad request | 21—Call rejected |
| Adaptive Busy | 41—Temporary failure | 486 Busy Here | 21—Call rejected |
| In Conference | 17—User busy | 486 Busy Here | 21—Call rejected |
| Undefined Reason | 16—Normal unspecified | 500 Internal Server Error | 38—Network out of order |
| Called Party Not Registered | 20—Subscriber absent | 404 Not Found | 21—Call rejected |
| Caller Not Registered | 31—Normal call clearing | ||
| New Connection Needed | 47—Resource Unavailable | 401 Unauthorized | 21—Call rejected |
H.225 RAS Errors
For calls that are rejected because of H.225 RAS, there is no CDR generated for the H.323 call leg as no Setup message is generated. The SBC maps RAS errors to SIP Status as specified in the table below. The SIP CDR disconnect cause values are the same as the CSPS disconnect cause values already mentioned and defined.
The entries in this table are determined by the SIP Status to H.323 RAS Error Mapping.
| H.225 RAS Error | SIP Status | SIP CDR Disconnect Cause |
|---|---|---|
| Called Party Not Registered | 404 Not Found | 21—Call Rejected |
| Invalid Permission | 401 Unauthorized | 21—Call Rejected |
| Request Denied | 503 Service Unavailable | 38—Network out of order |
| Undefined | 500 Internal Server Error | 38—Network out of order |
| Caller Not Registered | 401 Unauthorized | 21—Call Rejected |
| Route Call to Gatekeeper | 305 Use Proxy | 23—Redirection to new destination |
| Invalid Endpoint ID | 500 Internal Server Error | 38—Network out of order |
| Resource Unavailable | 503 Service Unavailable | 38—Network out of order |
| Security Denial | 401 Unauthorized | 21—Call Rejected |
| QoS Control Not Supported | 501 Not Implemented | 38—Network out of order |
| Incomplete Address | 484 Address Incomplete | 21—Call Rejected |
| Route Call to SCN | 302 Moved Temporarily | 2—Redirection |
| Aliases Inconsistent | 485 Ambiguous | 21—Call Rejected |
| Not Currently Registered | 401 Unauthorized | 21—Call Rejected |