[asterisk-ss7] libss7 CGU / CGUA type funnies
Matthew Fredrickson
creslin at digium.com
Mon Mar 26 09:53:16 MST 2007
On Mar 26, 2007, at 11:15 AM, Charl Barnard wrote:
> 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?
Yes, I just corrected it in trunk, thanks for noticing that. It
shouldn't have caused a bug since the event types (cgu and cgb) use the
same underlying type. Also I just committed a fix for the original
problem. If you could test it out to see if it fixes your problem and
report back I would appreciate it. You're going to have to update
libss7 and asterisk for it to work, since changes were required to both
parts.
Matthew Fredrickson
>
> 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
>>
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