3842

A request has been made to use a transit network or common carrier that cannot be accessed.

The equipment sending this cause event does not recognize the transit network.

1. From the circuit pack or media module and port number, in the Aux data field, determine the trunk group against which the error was reported.

2. Check every routing pattern containing this trunk group for validity of interexchange carriers requested (IXC field).

3843

No route to destination. Request received to route call through a transit network that is recognized but not allowed to carry the call or not able to serve the destination.

3846

The far-end switch has indicated that the B-Channel trunk is not acceptable for use in the call for which it was requested.

This could indicate an administration problem. For example, the local switch and the far-end switch have different B-Channels administered, or could reflect the occurrence of a normal race condition. For example, the local switch has requested use of a B-Channel that the far-end switch had just reserved for use on another call.

1. From the media module and port number in the Aux Data field, determine the trunk group against which the error was reported.

2. Enter status trunk for the indicated trunk. Refer to DS1 ISDN Trunk Service Statesand ISDN-PRI Trunk Service States sections of ISDN-TRK for recovery suggestions.

3858

Similar to error type 1. The switch sent a message to the far-end switch or terminal adapter that did not respond in the time allowed.

Follow same recommendations as for error type 1.

3878

The far-end switch has indicated that the network is not functioning correctly and that the condition may last a relatively long period of time. For example, immediately re-attempting the call may not be successful.

Network is out-of-order.

1. From the media module and port number in the Aux datafield, determine the trunk group against which the error was reported.

2. Consult with the network provider to determine the nature and expected duration of the out-of-service condition.

3. Consider modifying every routing pattern containing this trunk group to route calls around the network that is out-of-service.

3890

A request to use a network service has been denied. Administration somewhere on the network has indicated that the requested service has not been subscribed to, or purchased for this trunk.

This could be a local administration problem only, or a mismatch between the local administration and that of the network provider.

1. From the media module and port number in the Aux data field, determine the trunk group against which the error was reported.

2. Display the trunk group screen: If the trunk group is Call-by-Call, the service type is cbc, check every routing pattern form containing this trunk group to see if the Service/Feature Service/Featurefields contain the correct network services purchased for this trunk. If the trunk group is not Call-by-Call, check that the service type field contains the single network service purchased for this trunk.

3. If local administration is correct, consult with the customer or the network provider to determine the services that the customer has subscribed to for this trunk group.

3892

Protocol detail may offer a clue if the customer is having calls denied with an unexpected intercept tone.

If the customer is complaining of unexpected intercept tones and no other cause can be found, escalate the problem and provide the next tier with this error log information.

3894

Protocol detail; may offer a clue if customer is having ISDN calls denied with an unexpected intercept tone.

First, eliminate any transitory state mismatch problems by entering test port location for the trunk port shown in the Aux data field. Service State Audit Test 256 is the important test in the sequence. If this passes satisfactorily, yet the customer continues to complain of unexpected intercept tones and no other cause can be found, escalate the problem and provide the next tier with this error log information.

3902

FRANCE ONLY: Service not authorized.

3903

Service or option not available, unspecified. This cause reports a service or option not available event only when no other cause in the service or option not available class applies.

3905

Protocol detail; may offer a clue if customer is having ISDN calls denied with an unexpected intercept tone.

If customer is complaining of unexpected intercept tones and no other cause can be found, escalate the problem and provide the next tier with this error log information.

3906

Protocol detail may offer a clue if customer is having ISDN calls denied with an unexpected intercept tone.

If customer is complaining of unexpected intercept tones and no other cause can be found, escalate to the problem and provide the next tier with this error log information.

3909

A request to use a network service has been made, but the network has rejected the request because the requested service is not implemented.

Follow the previous recommendation for error type 3890.

3910

Only restricted digital BC available.

3919

Service or option not implemented, unspecified. Used when no other cause in this class applies.

3928

A call was denied because of a basic incompatibility existed between the type of call and either the facilities selected by the routing pattern or the called user.

This error might be helpful as a clue if the customer complains of receiving unexpected intercept tone. Determine the trunk group from the circuit pack or media module and port number in the Aux data field and then check the BCC fields of the pertinent routing patterns. Also, investigate whether or not the calling and called endpoints are compatible. For example, some switches may not allow a voice station to call a data extension.

3942

Timer expiry: T310 time-out, no answer to call proceeding.