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Author Topic: SS7 link capacity  (Read 1746 times)
faysal
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« on: November 23, 2004, 12:11:32 UTC »

Hello all,
would any one explain what is the maximum Call Attempts Per Second (CAPS) that one S7 link can handle in case of GSM and CDMA?
What is the formula of calculating that?

Regards,
Faysal
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raguvamshi
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« Reply #1 on: March 11, 2005, 05:25:26 UTC »

Basically you can only monitor the link usage of the SS7 links from the switch end which should be idealy 40% for a Adax card.And about supporting the number of SMS its the SMSC application which should actually be the bottleneck to decide the transaction of the message and has nothing to do with the ss7 link.

High link usage of the ss7 link may lead to more unwanted errors !!
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Tekno Telecom
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« Reply #2 on: September 12, 2005, 19:38:37 UTC »

Well the call setup and tear down portion actualy uses ISUP protocol and regardless of whether it's GSM or CDMA (IS41) the CPS limitations vary. 

If the link is only running ISUP it can hadle about 29 Calls per second at 40% utilization assuming 5 MSU's at 180 Bytes of data. (One link, but they are normally deployed as a minimum of 2)  Lucent usualy separates the wireless protocols from the ISUP on their siganalling links on the 5ESS.  Nortel keeps both protocols together on the same link, so this can vary greatly based on what other activities are happening, Registrations, SMS etc.   No matter what it's important to monitor the utilization and size accordingly based on the overall size of the linkset. 
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