Cause value 96

Last Updated : Oct 15, 2014 |
[0x60/0xE0]

Mandatory information element is missing

Cause

The equipment that sent this Cause Value Call Reference Value (CRV) receives a message that does not contain the required information element for the message to be parsed and processed.

Depending on which message in the call establishment sequence is missing the required information, a message returned with this Cause Value either does or does not indicate a problem establishing a call.

When the public network is screening for Calling Party Number (CPN), the missing CPN causes the network to return this Cause Value, but depending on the options administered in the CO, the call is established.

This cause value has local significance only. The ISDN network between the user and the equipment generating the cause value sends:

  • A no-cause indication through the network

  • A more generic Cause Value through the network

Proposed Solution

Procedure

  1. Check if the protocols at each end of the interface match, for example, both sides are AT&T Custom or both sides are NI-2. If the ends use different protocols, it indicates that the ends use protocols with different information element encoding.
  2. Check the diagnostic information (DIAG) for the Information Element (IE) identifier of the missing information. See Event data 2.