Oracle Communications EAGLE (Software)
 

PLA-Support>Sun Systems>CommsGBU>Global Signaling Solutions>SN-SND: Tekelec Eagle 5
 

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Goal

Solution

References

Created from <SR 3-17117684853>

Applies to:

Goal

To identify if there is any congestion control mechanism enabled on Eagle STP or if there are any specific features for this congestion control.
 

Solution

There is no specific feature for congestion control mechanism on the STP, rather the STP is implementing mechanisms according with the ITU standard, see Q.704 specification(paragraph 11.2.3).

For MTP routed traffic, TFC(Transfer Controlled) messages will be sent to all concerned message originators in order to throttle down the traffic reaching the STP. This TFC messages will be sent when a destination gets congested or when an outbound link towards a specific destination exceeds the provisioned TPS entering congestion state.

For GT/SCCP routed traffic, TFCs will not be sent, instead STP will send UDTS messages to the query OPC with Cause Code 6 - Network Congestion when the translated DPC gets congested. For this to happen, the "Return_on_error" bit has to be set in the originating MSU. Further, it depends on what congestion mechanisms are in place on the originating nodes and their behavior and actions when receiving UDTS with cause code 6 from the STP.

References

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