Re: [PATCH 1/4] DTD changes for mms, prepaid, wap

Hi Marcel,

On Friday 22 July 2011, Marcel Holtmann wrote:
> Hi Oleg,
> > diff --git a/serviceproviders.2.dtd b/serviceproviders.2.dtd
> > index d150a99..a0c5a31 100644
> > --- a/serviceproviders.2.dtd
> > +++ b/serviceproviders.2.dtd
> > @@ -18,6 +18,7 @@
> > 
> >                 password?,
> >                 dns*)>
> >  
> >  <!ATTLIST apn value CDATA #REQUIRED>
> > 
> > +<!ATTLIST apn type (mms|prepaid|wap) #IMPLIED>
> I would propose "internet", "mms" and "wap" as types. That is really
> what we care about. What can you do with this context.
> The only tricky part is that in some cases some providers use the same
> APN for Internet access and MMS. We could just list the context twice in
> that case or have a list of types per context.
> Android seems to use comma separated string for this. Where there also
> have some custom defined types like special Assisted GPS contexts. That
> seems to be Nokia specific detail in some countries with a total
> different billing concept.
> In addition to the actual type of the APN, I like to see an attribute
> for the "plan". So we can differentiate between "broadband", "prepaid"
> and others.
How would you describe the association between MMS and internet APNs? For 
example in the UK Vodafone has the following APN usage:

Contract Plan (MMS retrieval bandwidth is zero rated)
internet access is via 'internet' APN
MMS retrieval is via '' APN

Prepay Plan (MMS retrieval bandwidth is charged too) 
internet access is via 'pp.internet' APN
MMS retrieval is via 'pp.internet' APN

So it's important to select the correct APN for your plan even when retrieving 
MMS as either it won't function with your SIM, or you'll get charged for 
bandwidth when you shouldn't


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