Re: [PATCH] Sender as shortnumber with CIMD2

Andreas Fink wrote:
> 
> 
> On Dienstag, Februar 4, 2003, at 08:33 Uhr, Dziugas Baltrunas wrote:
> 
>     Hi,
> 
>     I think this patch is very useful (for me too), but I would like to
>     ask,
>     should there be operator permission to set ANY short number as the
>     number
>     of the sender? and if so, what is the difference between
>     'shortnumber' and
>     'from' number? because, for example, SMPP (if operator permits)
>     allows to
>     set any number, iregarding of it's lenght, using, for example, the same
>     'from' variable in send-sms.
> 
> 
> I don't understand what's the issue here. If you send the number as 123 
> it arrives on the phone as 123, if you send it as +123 it will arrive as 
> +123. So is this not good enough??

Not it looks like the operators MC adds the + sign even when sending 
just 123.


> in GSM transmission, a from number is the originator of the number. it 
> can be of different type. In reality any phone number is specified by 3 
> parameters which are:
> 
> TON: type of number
> NPI: network plan indicator
> Address:
> 
> A short ID is nothing else than TON = shortid while an international 
> number (+...) would be TON=international.
> the receiving phone would display the + if the originator has 
> TON=international set but not if TON is unknown or national or shortid.
> 
> In Kannel, if your number starts with +, it will set TON=international 
> automatically. At least thats the case in SMPP. In EMI it puts 00 
> instead because EMI doesnt support TON field and only knows 
> international numbers as numbers which start with 00... (international 
> prefix in europe).
> 
> So the correct approach for CIMD would be to set TON=international only 
> if the number starts with +. If this is not the case, then this is a bug 
> to be fixed but forcing it to another type is for sure not the right 
> approach.

I can not find any way in the CIMD2 specifications to set this. To quote 
the specifications "If an origination address is given in the submit 
message, it is regarded as a subaddress and it is appended to the end of 
the address that is set in the interface profile".

The specs state that there are two optional (none mandatory) sender 
parameters -  originator address and alphanumeric originator address. 
Without using the patch all numerical values in the 'from=' field  will 
be sent as originator address. The operator will/may prepend the pluss 
sign, thus ruining the ability to answer directly.

What the patch does is just that it treats all numerical 'from=' fields 
up to shortnumber= digits as an alphanumeric sender. This avoids the MC 
prepending the pluss sign. So if shortnumber=4 - from=2030 will be 
received without the pluss sign.

As long as the operator allows you to use the alphanumeric originator 
address (it has been in the specs. since Feb. 2001) this should be 
perfectly legal.

-- 
Med vennlig hilsen,
Eurobate ASA

Arne K. Haaje
Senior Network Engineer
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