Troubleshooting Guide, Release 6.0.1
Recoverable and Nonrecoverable Error Codes
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Recoverable and Nonrecoverable Error Codes

Table Of Contents

Recoverable and Nonrecoverable Error Codes

MGCP Normal, Recoverable, and Nonrecoverable Error Codes


Recoverable and Nonrecoverable Error Codes


Revised: July 22, 2009, OL-15636-07

MGCP Normal, Recoverable, and Nonrecoverable Error Codes

This appendix lists normal, recoverable and nonrecoverable error codes for the Cisco BTS 10200 Softswitch. Table A-1 sorts Media Gateway Control Protocol (MGCP) error codes into three categories: normal, recoverable, and nonrecoverable. Table A-1 also provides some of the behavior of the Cisco BTS 10200 for different MGCP message error codes. Endpoint connection (EPCF) and audit connection (AUCX) messages are not sent by the Cisco BTS 10200 to the gateway.

Table A-1 MGCP Normal, Recoverable, and Nonrecoverable Error Codes 

MGCP Error Code
Description
AUEP 1
DLCX 2
CRCX 3
MDCX 4
RQNT 5

200

The requested transaction was executed normally.

N6

N

N

N

N

250

The connection was deleted.

F7

N

N

N

R

400

Transient error. If this code is received, the Cisco BTS 10200 tries to recover by retransmitting the MGCP message with a different transaction identifier for a predefined number of times before declaring the endpoint faulty. The number of times is configurable at platform startup time, its default is 2.

R8

R

R

R

R

401

Phone is already off-hook. If this code is received, the Cisco BTS 10200 updates the endpoint resource state and continues with normal operation

F

F

R

N

N

402

Phone is already on-hook. If this code is received, the Cisco BTS 10200 updates the endpoint resource state and continues with normal operation.

F

F

R

N

N

403

Endpoint does not have sufficient resources at this time. If this code is received, the Cisco BTS 10200 automatically recovers by auditing the endpoint, deleting any available connections and then idling the endpoint.

R

F

N

N

R

404

Insufficient bandwidth at this time. If this code is received, the Cisco BTS 10200 automatically recovers by auditing the endpoint, deleting any available connections and then idling the endpoint.

F

F

N

N

R

405

The transaction could not be executed, because the endpoint is "restarting."

R

F

N

N

R

406

Transaction time-out. The transaction did not complete in a reasonable period of time and has been aborted.

R

F

N

N

R

407

Transaction aborted. The transaction was aborted by some external action, for example, a ModifyConnection command aborted by a DeleteConnection command

R

F

N

N

R

500

Endpoint is unknown. If this code is received during idling of an endpoint, the Cisco BTS 10200 marks the endpoint as faulty and perform automatic recovery.

F

F

F

N

F

501

Endpoint is not ready. If this code is received, the Cisco BTS 10200 automatically recovers by auditing the endpoint, deleting any available connections and then idling the endpoint.

R

F

N

N

R

502

The transaction could not be executed, because the endpoint does not have sufficient resources (permanent condition).

R

F

N

N

R

503

"All of" wildcard too complicated.

F

F

N

N

R

509

Error in RemoteConnectionDescriptor.

F

F

F

N

F

510

The transaction could not be executed, because some unspecified protocol error was detected. Automatic recovery from such an error will be very difficult, and hence this code should only be used as a last resort.

R

F

N

N

R

511

The transaction could not be executed, because the command contained an unrecognized extension. This code should be used for unsupported critical parameter extensions ("X+").

F

F

F

N

F

512

The transaction could not be executed, because the gateway is not equipped to detect one of the requested events.

F

F

N

N

F

513

The transaction could not be executed, because the gateway is not equipped to generate one of the requested signals.

F

F

N

N

F

514

The transaction could not be executed, because the gateway cannot send the specified announcement.

F

F

N

N

R

515

The transaction refers to an incorrect Connection-ID (may have been already deleted).

F

N

N

N

R

516

The transaction refers to an unknown Call-ID, or the Call-ID supplied is incorrect (for example, Connection-ID not associated with this Call-ID).

F

N

N

N

R

517

Unsupported or invalid mode.

F

F

F

N

R

518

Unsupported or unknown package. It is recommended to include a PackageList parameter with the list of supported packages in the response, especially if the response is generated by the Call Agent.

F

F

F

N

F

519

Endpoint does not have a digit map.

F

F

N

N

R

520

The transaction could not be executed, because the endpoint is "restarting." In most cases this would be a transient error, in which case, error code 405 should be used instead. The error code is only included here for backwards compatibility.

R

F

N

N

R

521

Endpoint redirected to another Call Agent. The associated redirection behavior is only well-defined when this response is issued for a RestartInProgress command.

F

F

N

N

R

522

No such event or signal. The request referred to an event or signal that is not defined in the relevant package (which could be the default package).

F

F

N

N

F

523

Unknown action or illegal combination of actions.

R

F

N

N

R

524

Internal inconsistency in LocalConnectionOptions.

F

F

N

N

R

525

Unknown extension in LocalConnectionOptions. This code should be used for unsupported mandatory vendor extensions ("x+").

F

F

F

N

R

526

Insufficient bandwidth. In cases where this is a transient error, error code 404 should be used instead.

F

F

N

N

R

527

Missing RemoteConnectionDescriptor.

F

F

F

N

R

528

Incompatible protocol version.

F

F

F

N

F

529

Internal hardware failure.

F

F

F

N

F

530

Channel-associated signaling (CAS) protocol error.

R

F

N

N

R

531

Failure of a grouping of trunks (for example, facility failure).

F

F

N

N

R

532

Unsupported value(s) in LocalConnectionOptions.

F

F

F

N

R

533

Response too large.

F

F

N

N

R

534

Codec negotiation failure.

F

F

N

N

R

535

Packetization period not supported.

F

F

N

N

R

536

Unknown or unsupported RestartMethod.

F

F

N

N

R

537

Unknown or unsupported digit map extension.

F

F

N

N

F

538

Event/signal parameter error (for example, missing, erroneous, unsupported, unknown, and so on).

F

F

N

N

F

539

Invalid or unsupported command parameter. This code should only be used when the parameter is neither a package or vendor extension parameter.

F

F

N

N

R

540

Per endpoint connection limit exceeded.

F

F

N

N

R

800

 

F

F

N

F

F

801

 

F

F

N

F

F

802

 

F

F

N

F

F

803

 

F

F

N

F

F

Unknown like 900

 

F

F

F

F

F

Invalid or absent transaction identifier

 

RX9

RX

RX

RX

RX

1 AUEP—audit endpoint

2 DLCX—delete connection

3 CRCX—create connection

4 MDCX—modify connection

5 RQNT—notification request

6 Normal (N)—Other than 200 error code; the Cisco BTS 10200 clears the call.

7 Faulty (F)—The Cisco BTS 10200 clears the call.

8 Recoverable (R)—The Cisco BTS 10200 clears the call and starts finite recovery or nonrecoverable (NR).

9 For 400 error codes, the Cisco BTS 10200 retransacts (RT) the corresponding MGCP message. The Cisco BTS 10200 also retransmits (RX) the MGCP message with the same transaction.