[asterisk-ss7] libss7 CGU / CGUA type funnies

[Daniel Bichara]

Dear Matthew,

I found other bugs on the code when connecting 4 different point codes
but one adjacent signaling link (fixed).

Also, I could not connect 2 signaling channels to the same linkset.
There is a sync issue FIB/BIB when we have more than one sigchannel.

Can I contact you off-list? Can I send to you patches (chan_zap & libss7)?

[]'s

Daniel


Matthew Fredrickson escreveu:
> Sorry, that's a bug in my code.  I'm looking at it right now to fix it
> :-)
>
> Matthew Fredrickson
>
> On Mar 26, 2007, at 10:43 AM, Charl Barnard wrote:
>
>> 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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