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
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