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| | |-+  From where smsc gets the MIN of a certain MDN ?
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Author Topic: From where smsc gets the MIN of a certain MDN ?  (Read 1458 times)
itsnomihere
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« on: February 22, 2006, 08:10:37 UTC »

After receving sms point to point delivery request for destination MDN
the sms-c does a sms-request operation to hlr.
in this operation destination MIN is must
from where you can get the MIN of destination MDN
please; the answer for this issue is urgently required
thanks and thanks again in advance
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« Reply #1 on: February 22, 2006, 08:17:45 UTC »

not necessarily.. there was changes to the ANSI-41 spec to allow a HLR query to contain the MDN.. the SMSREQ_R then returning the MIN which is then used in the MSC delivery request.

For networks that do not have this portability functionality, either the MDN and MIN are one and the same thing, there is some mechanical means of stripping digits from the MDN to derive the MIN or some non-standard 3rd party resolution mechanism is used to resolve the MDN to MIN before the HLR lookup takes place
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shad
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« Reply #2 on: February 22, 2006, 21:01:11 UTC »

The change is in IS-841 - the MIN/MSID is changed from mandatory to optional in the SMSREQ. Either the MSID or the MDN must be present in the invoke, and the MSID can be returned in the RR.
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« Reply #3 on: February 23, 2006, 08:28:51 UTC »

Quote
Either the MSID or the MDN must be present in the invoke

Should that not be either the MSID (MIN or MDN) must be present in the invoke?
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shad
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« Reply #4 on: February 23, 2006, 17:39:13 UTC »

Should that not be either the MSID (MIN or MDN) must be present in the invoke?

No, MSID is MIN or IMSI. Generally MSID replaces MIN in most places in the standard to allow for the introduction of IMSI into ANSI-41. MSID has no actual encoding, it is just a choice of MIN or IMSI. For those carriers who aren't yet using IMSI (i.e. most of them), it boils down to the same thing - either MIN or MDN must be present.
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« Reply #5 on: February 23, 2006, 23:31:14 UTC »

excellent.. my mistake.. its been too long since I worked on ANSI-41!
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ecwx
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« Reply #6 on: July 12, 2006, 07:34:03 UTC »

Hi,
I also need to know how to get MIN from MDN, I try to do SMDPP without supplying the MIN, just the MDN but the network wouldn't let me.

I'm programming using Telesoft's TDAPI and connected to ZTE based CDMA network. The network itself support SMS_Request based on MDN and returns MIN as one of the result parameter, but the API wouldn't let me use MDN as parameter. I've tried Telesoft's support channel, but no solid answer yet.

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itsnomihere
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« Reply #7 on: July 17, 2006, 09:12:27 UTC »

Dear
you should be able to perform SMDPP without using MIN
we are using it and it is working fine
no idea about Telesoft
if you can send the dump of your SMDPP/SMS_Request log

Regards,
Nauman
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zahei
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« Reply #8 on: November 09, 2006, 10:38:03 UTC »

you have a quick and dirty solution, but ONLY if the network is using a pseudo-IMSI, constructed from the MDN with some sort of prefix in front (country code, etc), then you can manipulate the MDN just before delivering by instructing the SMSC to modify everything that goes to the IS-41 interface by putting that prefix in front of the MDN. It's just another routing rule, MDN 555-2345541 becomes 22305-555-2345541. It will still be MDN but it will be treated as IMSI by the MSC because will match the actual IMSI in the database.
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