- This topic has 6 replies, 1 voice, and was last updated 12 years, 8 months ago by
.
-
Posts
-
i am observing lots of Connection refused messages after Paging response with refusal cause SCCP user originated. these are all for Terminating calls only. happening for one BSC which is already facing air and a interface congestion
Whats “Refusal cause” field value in CREFs?
Refusal Cause:SCCP user originated
and its 03is this information sufficient?
Might be that maximum number of SCCP connections in A-interface exceeded. Or theres not enough space for SLR/DLR session identiriers from MSC side for SCCP-connection establishment.
You wrote that it’s only in Term-call scenarion. MO-call works?
Whats the cause of congestion: huge traffic or some configuration failure of A-interface?yes strange thing is its seen only for terminating calls. BSC suffering from it is carrying huge traffic thats y congested at air and a interface both
We are observing lot of SCCP Connection refusals from MSC end for one of the BSC where there is no congestion in A interface.
hello,
just a thought : there could be “A signalling” congestion, rather than “A user plane” congestion ?
which mode of tranport are you using on this interface ? TDM or IP ?
Another idea : if the SCCP reject rate is very high, I would suggest a configuration issue. Congestion rate could lead to 5% to 10% sccp reject rate, max (assuming your interface dimensioning was done correctly).
regards
pix
- The forum ‘Telecom Design’ is closed to new topics and replies.
