Sunday, April 22, 2012

MS Initiated PDP context deactivation with Bearer Control mode

Hi All,

My first technical writing on my favorite domain. Just want to share one of my work experiences.
I have come across a scenario where a subscriber has two PDP context activated.
One primary and one secondary. When during deactivation of PDP context, if Tear down Indicator is set for a PDP then all  the context relating to that particular PDP address has to be deactivated..
But in one particular case it is not same. When MS initiates Deactivation of Secondary PDP context with TDI set and its Bearer Control mode is 'MS/NW', then in that case the context that doesn't have a TFT would not be deactivated (Mostly this would be primary context).

The Bearer Control Mode (BCM) can be set to MS_only, MS/NW and NW_only based on the Protocol configuration Options field. More details of this can be found in 24.008 and 23.060.