3 Nov
2009
3 Nov
'09
12:03 a.m.
Hello Harald,
On Mon, 2 Nov 2009 22:47:18 +0900, "Harald Welte" <laforge(a)gnumonks.org>
wrote:
This is actually very funny. According to the protocol, a RA update should
only be performed if the MS was/is already GPRS ATTACHED to this network
before. It clearly wasn't in this case, as the OpenBSC network never
offered GPRS support. Still, it tries it. That's why we're rejecting it.
Not sure if I understand it in detail, from my understanding an RA Update
is performed when the Routing Area has changed (or the periodic RA update
timer has expired). So if the phone is already attached to a network,
shouldn't we receive the RA update if it selects our new RA ?
Best regards,
Dieter
--
Dieter Spaar, Germany spaar(a)mirider.augusta.de
3 Nov
3 Nov
1:25 a.m.
New subject: GPRS branch status updates
On Mon, Nov 02, 2009 at 11:03:42PM +0000, Dieter Spaar wrote:
Hello Harald,
On Mon, 2 Nov 2009 22:47:18 +0900, "Harald Welte" <laforge(a)gnumonks.org>
wrote:
a routing area change is a routing area change within one network. if it
enters a new network (different MCC/MNC), it needs to gprs attach to this
network first.
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
This is actually very funny. According to the protocol, a RA update should
only be performed if the MS was/is already GPRS ATTACHED to this network
before. It clearly wasn't in this case, as the OpenBSC network never
offered GPRS support. Still, it tries it. That's why we're rejecting it.
Not sure if I understand it in detail, from my understanding an RA Update
is performed when the Routing Area has changed (or the periodic RA update
timer has expired). So if the phone is already attached to a network,
shouldn't we receive the RA update if it selects our new RA ?
9 Nov
9 Nov
8:33 a.m.
New subject: GPRS branch status updates
On Mon, Nov 02, 2009 at 11:03:42PM +0000, Dieter Spaar wrote:
Hello Harald,
On Mon, 2 Nov 2009 22:47:18 +0900, "Harald Welte" <laforge(a)gnumonks.org>
wrote:
As it turns out, this really seems to be the case. So even while
switching from one mobile network (MNC/MCC) to another, the MS can
apparently just perform a RA update and does not have to do a GPRS
attach. This explains the beahvior.
It's still quite weird to me, but well, at least we know the phones
in question are behaving like they should.
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
This is actually very funny. According to the protocol, a RA update should
only be performed if the MS was/is already GPRS ATTACHED to this network
before. It clearly wasn't in this case, as the OpenBSC network never
offered GPRS support. Still, it tries it. That's why we're rejecting it.
Not sure if I understand it in detail, from my understanding an RA Update
is performed when the Routing Area has changed (or the periodic RA update
timer has expired). So if the phone is already attached to a network,
shouldn't we receive the RA update if it selects our new RA ?
5289
days inactive
5296
days old
2 comments
2 participants
participants (2)
-
Dieter Spaar -
Harald Welte