[asterisk-ss7] libss7 CGU / CGUA type funnies

[Charl Barnard]

Hmm..looking at the chan_zap.c, I suspect the problem might be lines 8723,
8724 (Asterisk r57457):

        ss7_block_cics(linkset, e->cgu.startcic, e->cgu.endcic,
e->cgb.status, 0);
                                                                   ^^^
        isup_cgua(linkset->ss7, e->cgu.startcic, e->cgu.endcic,
e->cgb.status); 
                                                                   ^^^

.. shouldn't the marked structures be "cgu" in both cases, comparing it to
ISUP_EVENT_CGB in the case block just prior to that?

Regards,

Charl

> -----Original Message-----
> From: asterisk-ss7-bounces at lists.digium.com 
> [mailto:asterisk-ss7-bounces at lists.digium.com] On Behalf Of 
> Charl Barnard
> Sent: 26 March 2007 17:43
> To: asterisk-ss7 at lists.digium.com
> Subject: [asterisk-ss7] libss7 CGU / CGUA type funnies
> 
> Hi All,
> 
> We've recently discovered something strange running libss7 
> (r74): seems like when the switch we're connected to sends us 
> a Circuit Group Unblock message with type Maintenance 
> oriented, libss7 responds with an acknowlegement for type 
> Hardware failure oriented, instead of Maintenance, and vice 
> versa when CGU is received with message type Hardware-please 
> see the following trace:
> 
> +---------+---------------------------------------------+-----
> ----------
> +---------+---------------------------------------------+----
> -----------------+ 
> |BITMASK  |ID Name                                      
> |Comment or Value
> | 
> +---------+---------------------------------------------+-----
> ----------
> +---------+---------------------------------------------+----
> -----------------+ 
> |5:08:34 PM,851,406  1:E (Rx):15  MTP-L2  MSU  ISUP  CGU  0-XXX-0  
> |2-XXX-0
> 000-02           | 
> |MTP Level 2 (MTP-L2)  MSU (= Message Signal Unit)
> | 
> |Message Signal Unit
> | 
> |-0000111 |Backward Sequence Number                     |7
> | 
> |1------- |Backward Indicator Bit                       |1
> | 
> |-1100000 |Forward Sequence Number                      |96
> | 
> |1------- |Forward Indicator Bit                        |1
> | 
> |--010000 |Length Indicator                             |16
> | 
> |00------ |Spare                                        |0
> | 
> |----0101 |Service Indicator                            |ISDN 
> User Part
> | 
> |--00---- |Sub-Service: Priority                        
> |Spare/priority 0
> (U.S.A. only)      | 
> |00------ |Sub-Service: Network Ind                     |International
> message               | 
> |**b14*** |Destination Point Code                       |0-XXX-0
> | 
> |**b14*** |Originating Point Code                       |2-XXX-0
> | 
> |ITU-T WHITE BOOK ISDN User Part (ISUP)  CGU (= Circuit Group 
> |Unblocking)
> | 
> |Circuit Group Unblocking
> | 
> |0010---- |Signalling Link Selection                    |2
> | 
> |**b12*** |Circuit Ident Code                           |000-02
> | 
> |0000---- |Spare                                        |0
> | 
> |00011001 |Message Type                                 |25
> | 
> |------00 |Cct grp supervis msg type                    |Maintenance
> oriented                | 
> |000000-- |Spare                                        |0
> | 
> |00000001 |Pointer to parameter                         |1
> | 
> |Range and status
> | 
> |00000101 |Parameter Length                             |5
> | 
> |00011101 |Range                                        |29
> | 
> |**b30*** |Status
> |'111111111111110111111111111111'B   | 
> |00------ |Filler                                       |0
> | 
> 
> +---------+---------------------------------------------+-----
> ----------
> +---------+---------------------------------------------+----
> -----------------+ 
> |BITMASK  |ID Name                                      
> |Comment or Value
> | 
> +---------+---------------------------------------------+-----
> ----------
> +---------+---------------------------------------------+----
> -----------------+ 
> |5:08:34 PM,925,025  1:F (Rx):15  MTP-L2  MSU  ISUP  CGUA  2-XXX-0  
> |0-XXX-0
> 000-02          | 
> |MTP Level 2 (MTP-L2)  MSU (= Message Signal Unit)
> | 
> |Message Signal Unit
> | 
> |-1100000 |Backward Sequence Number                     |96
> | 
> |1------- |Backward Indicator Bit                       |1
> | 
> |-0001000 |Forward Sequence Number                      |8
> | 
> |1------- |Forward Indicator Bit                        |1
> | 
> |--010000 |Length Indicator                             |16
> | 
> |00------ |Spare                                        |0
> | 
> |----0101 |Service Indicator                            |ISDN 
> User Part
> | 
> |--00---- |Sub-Service: Priority                        
> |Spare/priority 0
> (U.S.A. only)      | 
> |00------ |Sub-Service: Network Ind                     |International
> message               | 
> |**b14*** |Destination Point Code                       |2-XXX-0
> | 
> |**b14*** |Originating Point Code                       |0-XXX-0
> | 
> |ITU-T WHITE BOOK ISDN User Part (ISUP)  CGUA (= Circuit Group 
> |Unblocking
> Ack.)              | 
> |Circuit Group Unblocking Ack.
> | 
> |0000---- |Signalling Link Selection                    |0
> | 
> |**b12*** |Circuit Ident Code                           |000-02
> | 
> |0000---- |Spare                                        |0
> | 
> |00011011 |Message Type                                 |27
> | 
> |------01 |Cct grp supervis msg type                    
> |Hardware failure
> oriented           | 
> |000000-- |Spare                                        |0
> | 
> |00000001 |Pointer to parameter                         |1
> | 
> |Range and status
> | 
> |00000101 |Parameter Length                             |5
> | 
> |00011101 |Range                                        |29
> | 
> |**b30*** |Status
> |'111111111111110111111111111111'B   | 
> |00------ |Filler                                       |0
> | 
> 
> Any ideas? This obviously leaves the two ends confused about 
> circuit state.
> 
> Thanks,
> 
> Charl
> 
> _______________________________________________
> --Bandwidth and Colocation provided by Easynews.com --
> 
> asterisk-ss7 mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-ss7
>