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commit 37bf6628972271e1054d8583313754cda1bbd2fc Author: Tobias Engel tobias@ccc.de Date: Wed Mar 28 13:54:20 2012 +0200

SS: Send Return Error instead of Reject when service is not provisioned

http://cgit.osmocom.org/openbsc/commit/?id=c146eba59841beccb5d9e84386c39d836...

commit c146eba59841beccb5d9e84386c39d836dba9967 Author: Tobias Engel tobias@ccc.de Date: Wed Mar 28 13:50:29 2012 +0200

SS: Return Error component added

gsm0480_send_ss_return_error sends a return error component with the supplied error code, and optionally ASN.1 BER formatted parameters (GSM 04.80 4.3)

http://cgit.osmocom.org/openbsc/commit/?id=4e13e522ffdd1cc3ee9741ebaeba1fd71...

commit 4e13e522ffdd1cc3ee9741ebaeba1fd711144a0d Author: Tobias Engel tobias@ccc.de Date: Thu Mar 22 15:09:54 2012 +0100

SS: Call Waiting SS

This patch adds the ability to activate, deactivate and interrogate the Call Waiting SS (GSM 04.83) from a mobile station using either the menu or the MMI codes *43#, #43# and *#43# (see GSM 02.30).

struct gsm_subscriber now has a member active_cc_transactions which will be increased/decreased in new_cc_state. A call to a subscriber will now only proceed if active_cc_transactions is either 0, or CW has been provisioned and activated for that subscriber, otherwise the caller will receive a "busy" signal.

http://cgit.osmocom.org/openbsc/commit/?id=33bc1716f435e81d837268cbb04ddf748...

commit 33bc1716f435e81d837268cbb04ddf7487f14a32 Author: Tobias Engel tobias@ccc.de Date: Thu Mar 22 15:07:29 2012 +0100

SS: Supplementary Services (de)activation and interrogation

These patches enhance the Supplementary Service (SS) processing from only being able to handle USSD to other SS, specifically activation, deactivation and interrogation of those SS. Registration is not yet implemented.

The HLR db now includes a table SS_Status which contains fields for the SS code (GSM 09.02 17.7.5), basic service code (17.7.9 and 17.7.10) and SS status bits (17.7.4) and references the subscriber.

db.c supports interrogating and setting the SS status with the functions db_ss_interrogate_status and db_ss_set_status. No automatic provisioning takes place. To do so, a record has to be added to the db referencing the subscriber and containing the desired SS code, BS code and having the 'P' bit in the SS status set to one.

All occurrences of "ussd" have been replaced with "ss" where the corresponding file/function/variable deals not exclusively with USSD requests. ussd.c and ussd.h have been renamed to ss.c and ss.h.

gsm0480_send_ss_return_result has been added to gsm_04_80.c. It takes a msgb as an argument which has to already contain the ASN.1 formatted Return Result minus the operation code and invoke id.

change_ss_activation and interrogate_ss have been added to ss.c (formerly ussd.c). Currently, (de)activation and interrogation of SS will always be handled as if it was requested for the Telephony teleservice, no matter what was requested by the subscriber. Also, sending a Return Error has not been implemented yet (Reject is used instead).

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