Long SMS Problem

[kema2103]

Hi,

does any one has experience in case that short SMS are going out and long SMS are delivered to late within network i.e. with big delays, what can cause such can of the problem and where to look to solve it?

thanks in advance.

[cococrunch]

Have you checked the PCH throughput and Paging SR(Need help from Core) in your network?
In 3G, it should not exceed 4kbps per LAC if im not mistaken.

[adewijaya]

as i know, for sms > 160 character will be sending on sequel, its mean more time to deliver, isn't?

[kema2103]

Cococrunch thanks for hint I will try to verify this too. I was under impression that problem could be on SMSC side while short SMS is going out without problem but longer not.

[k4conk]

May be you can check CCCH Load at one week if >=1000 you need to add canal :victory:

[kema2103]

Ok another good point, I will try. Thanks.

[harrypotter]

its an SMSC problem.. check with your SMSC vendor.

[kema2103]

It seems like to be, where of 5 SMSCs one had problems once problematic SMSC is switched off long sms delay problem has disappeared.

[hari_2208]

is this issue seen in cdma 1x or wcdma?

[kema2103]

This is issue is on WCDMA.

[arjaypanganiban]

if you have protocol analyzers in your SMSC, MSC and STP. try making a test SMS to isolate the problem. You have to send a long message towards the test subscriber. In MSC side you should see a lot of MT forward SM message request and reply. If you have time, try sending me your traces so I could interpret it for you.:lol

[plannerguy]

Hi

SMS is in a pattern of 160 Characters so even long it will break same to blocks of 160 and send .....

so pls check wether the full SMS is delivered ....else has to check follwoing points.


1)Signalling load of SMSC
2)No of SMS Pushes /sec
3)Your Radio CCCH configuration.

Thanks
Plannerguy