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NOTE:

• If the error response is any of 401, 407, 408, and 7xx, the

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  exhibits the default characteristics even if the parameter is enabled.
• When this parameter is disabled (as the default behavior), and the

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  gets error response for the REFRESH REGISTER, it changes the RCB state from REFRESHING to TERMINATED and starts a 64 second timer. If the

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  receives a Re-REGISTER request (REFRESH or UPDATE) within the next 64 seconds, it does not relay the request to the Registrar and locally responds to the UE with the previously preserved error message (because the RCB state is TERMINATED). However, if the

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  receives an Un-REGISTER request from the UE within the 64 seconds, it deletes the information about the earlier registration failures, and allows the next REGISTER attempt to go through.
• When this parameter is enabled, on receiving an error response for REFRESH REGISTER attempts, the

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  sets the RCB state to COMPLETED instead of TERMINATED. On receiving subsequent REFRESH REGISTER requests, instead of locally relaying the previously stored error message to the UE, the

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  relays the REFRESH REGISTER request to the Registrar. In general, whenever the RCB is COMPLETED, the

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  relays the REFRESH REGISTER requests to the Registrar.