8 Aug
2023
8 Aug
'23
8:36 a.m.
Hi Mychaela,
Yes, I think it is correct to call the SMSC address a GT. In the IR.21 document of
operators it is also listed as a GT AFAIR.
Cheers,
Domi
08.08.2023 dátummal, 8:28 időpontban Mychaela Falconia
<falcon(a)freecalypso.org> írta:
Hello fellow developers,
I am getting ready to implement my own SMSC, connecting to Osmocom CN
via GSUP (see OS#6135), and I have a question about SMSC address
terminology.
In traditional commercial GSM networks, the SMSC address visible to
the user (prepended to the TPDU for MT SMs, stored in EF_SMSP record
on the SIM for MO SMs) looks like a phone number in full international
format, with TON=1 and NPI=1. For example, T-Mobile's SMSC address is
+12063130004 (to an uninitiated eye it looks exactly like a regular
phone number in Seattle, WA), while the SMSC of Mexican Telcel is
+5294100001410 - one digit longer than regular phone numbers in Mexico,
and a little irregular in structure.
What is the correct term for these SC-address phone-number-thingies?
Are they Global Titles - or is GT something different?
If I were to make up fake global-looking SMSC addresses of this form,
e.g., something like +1xxx55501xx for NANP territory, would it be
correct to call such SC-address a fake Global Title?
Just wondering...
M~