[asterisk-ss7] libss7 CGU / CGUA type funnies
Matthew Fredrickson
creslin at digium.com
Mon Mar 26 13:47:39 MST 2007
Sure. The best place for me to get patches (so they get disclaimed and
all) is through bugs.digium.com. If you post them there, and open up a
bug under libss7 I should get assigned to it and can apply your
patches. For any other questions, you can of course email me directly
as well, though if they're related to ss7, it might profit others on
the list to see some of the correspondence.
Matthew Fredrickson
On Mar 26, 2007, at 3:44 PM, Daniel Bichara wrote:
>
> 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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