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TIMERS - Implicit IMSI Detach, VLR purge

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Neel - 23rd February 2017  (09:40 GMT)

Why VLR purging is required after STP fluctuations in ICR network

Wallis Dudhnath - 26th November 2016  (15:31 GMT)

The ISUP cause codes are based on the earlier ISDN standards.

Usage of cause and location in the Digital Subscriber Signalling System No. 1 and the Signalling System No. 7 ISDN User Part. Look at the following ISDN specifications: Q.931 and Q.850.

Subscriber Absent:

This cause value is used when a mobile station has logged off, radio contact is not obtained with a
mobile station or if a personal telecommunication user is temporarily not addressable at any usernetwork

Anshul - 22nd November 2016  (19:55 GMT)

After successful purge in VLR , what is timer in HLR to store previous VLR address in it . I mean till what time its visible in HLR.

haris - 27th May 2014  (18:32 GMT)

I would like to know the ISUP cause code for the case MS Purged from VLR.
Is it correct the cause code is should be 'Subscriber Absent' or any others such as 'Normal Unspecified'?

Leo Dennis - 25th May 2012  (16:52 GMT)

In case mobile is marked as dettached in the VLR and subscriber data are added, deleted or changed in the HLR, the VLR will be updated via insert data MAP msg ?

selvakumar - 23rd March 2011  (12:28 GMT)

Say example for out of coverage and not reachable(IMSI Detach)

bernard - 30th September 2010  (08:30 GMT)

Hello All,
can you give me your quick recommendation for purge timer or anything to improve SMSMT. We have set IDT to 2hrs to improve paging. Im currently thinking to modify MS purge timer and/or SMSC retry interval. Major cause for my SMSMT is "subscriber absent" and SMSC still attempts even when MS is detached(power off).
my current setting is;
purge timer = 7days
SMSC retries at an interval 5 mins, 5 mins, 10min... and after 8hrs before the SM be deleted.
Thanks very much.

JEMO FROM UG - 15th September 2009  (06:15 GMT)


Pix - 29th July 2009  (06:10 GMT)

Cool ? Really ?

Motorbikes are cool.
Basejump is cool.

One erlang... errr... not that cool :)

MishaPowerauto - 29th July 2009  (05:15 GMT)

The article is ver good. Write please more - cool!!!!

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