Change in ...osmo-hlr[master]: hlr.c: abort LU without MSISDN
gerrit-no-reply at lists.osmocom.org
Thu Jun 13 13:48:00 UTC 2019
laforge has posted comments on this change. ( https://gerrit.osmocom.org/c/osmo-hlr/+/14423 )
Change subject: hlr.c: abort LU without MSISDN
Patch Set 1:
3GPP TS 23.003:
One or more numbers of the ISDN numbering plan shall be assigned to a mobile station to be used for all calls to that station, i.e. the assignment of at least one MSISDN to a mobile station is mandatory. As an exception, GPRS and EPS allow for operation whereby a MSISDN is not allocated as part of the subscription data (see 3GPP TS 23.060 
subclause 5.3.17 and 3GPP TS 23.401 ).
In practise, as Daniel points out, many GPRS modems will however refuse to register on GPRS if the LU on GSM (CS) fails. So In the end, I think we should permit both CS and PS LU for subscribers without MSISDN.
In LTE/IMS, there is even support for SMS without MSISDN. However, that doesn't apply to GERAN/UTRAN.
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Gerrit-Owner: osmith <osmith at sysmocom.de>
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Gerrit-Comment-Date: Thu, 13 Jun 2019 13:48:00 +0000
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