ICC Adhoc Test Team Meeting Minutes from July 07, 1997
Based substantially on Joe Questore s, Bellcore, minutes from the
meeting. Thanks, Joe.
In attendance:
Walt Subora Ameritech/Chair
Paul Kruse Ameritech
Joe Questore Bellcore
Dick Dowd LLC/SPoC team
Bill Belshaw MCI/Test Plan Editor
Larry Lovett Sprint SPoC
Hampton Oberle MCI SPoC
Rajeev Trika TCG SPoC
Nancy DeRoo Ameritech/Chair 911 Adhoc Team
Bob Bartenstein Ameritech SPoC
Larry Prosser Brooks Fiber
Carmen Colella Ameritech
Alan Harris AT&T
Magdalen Beers AT&T
Debbie Cathey AT&T
OC Jackson AT&T
Wayne Heinmiller Ameritech/Chair SCP subcommittee
Anne Driscoll MCI/on bridge
Next Meeting is a conference call:
Date: July 24, 1997
Time: 13:00 - 15:00 CDT
Callin: 800-708-xxxx, code xxxxx
Agenda: To be sent later.
Meeting began at 9:00 AM.
Walt noted that the start date of the FCC trial was moved back to 8/11
(from 7/24) and that a letter will be delivered to the FCC to notify
them. The ICC is aware. He also stated that an end date has not been
determined.
1. Discussion on updated looping test scripts. Wayne Heinmiller
(Ameritech), chair of the SCP subcommittee, discussed the Revised GTT
Looping Test. He explained that the NPAC downloads updates by putting
the message in a queue on the link to each network. It is then up to
each link and the systems on the other end of the link that may add
delay to updating the downstream databases (LRN SCPs and Message Relay
nodes (both SCPs and STPs are used)). This could result in a lack of
synchronization of porting states between networks. Consequently,
CLASS, LIDB, TR1188 CNAM, and ISVM messages may end up in a loop
condition between the donor network and the recipient network.
A. Test Case 1:
Wayne explained that the first test is to ensure that the looping is
resolved once all of the networks become synchronized over time. He
noted that for the FCC trial, one way to execute this test and create
the out-of-synch condition is to take one of the NPAC links out of
service at the point it would be sending out an update. Walt pointed out
that this would invoke the LSMS to try to sync up with the backup NPAC
SMS, which would still be in use as a test system for late comers. Also,
this would disrupt any other testing that was going on that needed the
NPAC to download during the test.
B. Test Case 2:
2nd test compares various loop detection schemes. Wayne endorsed GWS at
STPs (reject incoming messages with OPC of own network) and TT mapping
(use different translations tables for messages with OPC from another
network than with OPCs from own network).
Walt said that he tried it in his lab, and one CLASS test looped 45,000
times an hour. He noted that 600 calls would take down the SCP. The
links went up to about .9 erlangs.
C. Discussion:
Wayne, on behalf of his subcommittee, is asking that these two tests be
added to the Test Plan.
Walt commented that the self-correcting looping test may not be doable
because of the low level of traffic during the test interval. He noted
that the NIIF/NTC will be running a similar test in their "Phase 10"
test in October, in a lab environment.
Bill Belshaw supported putting these in the test plan. Walt agreed, and
stated that the NTC will be running a similar test in October, and felt
that since it was not appropriate to run the test in the field
trial--because of the risk to the live network--it was appropriate to
look to the results of the NTC tests.
Carmen Colella (Ameritech Operator Services) asked If NPAC knows that
one LSMS link is not available, does it hold off on updating the others?
Walt replied not per the requirements. Carmen suggested that it would
make sense to hold off on the updates.
Nancy DeRoo noted that if it is a slow system issue, the same networks
may always be out of synch.
Wayne will provide a revised version to Walt tomorrow (needs some minor
editing). He will report to the SCP committee that the tests will be
put in the test plan, however they may be run in a venue other than the
FCC trial. The test cases will be put in the test plan.
2. Walt noted that Bill Belshaw will post Issue 1.5 of the test plan up
on the website by Monday. Walt sent the test plan to Barry Bishop,
Operations Subcommittee chair, for inclusion on ported.com on July 14.
Should appear there by July 21, when Barry is back from vacation.
3. Walt stated that he will provide the load testing scripts to Bill
for the next update to the test plan. He also noted that these tests
would not be run during the trial.
4. Walt stated that he would like to move the Test Plan Team meetings
to conference calls, and use the website to distribute handouts. There
is a conference call scheduled for 7/24 at 1PM CDT. By the end of the
test execution in Chicago, Walt would like to be able to hand the test
plan over to the NIIF.
5. Action Items
AI 6: NPAC input to the test Plan -- OPEN--Walt reported that the NPAC
has been occupied with getting the NPAC ready
AI 12 - Closed at last meeting
AI 18 - Closed - 911 scripts included in Test Plan
AI 24 - Open - referred it to the NTC for testing, however Test
Committee could document expected results. Joe Questore described what
failure testing the NTC was planning to running. Walt will write a
liaison letter to NTC asking for a description of what the NTC is
planning to do.
AI 25 - OPEN - looking for more input from Operations Committee
AI 26 - closed
AI 28 - closed
AI 30 - closed
AI 32 - closed
AI 46 - closed
AI 47 - closed
6. Nancy DeRoo - PacBell discovered PSAP can t transfer call with
number that has 6-digit LNP trigger on a 5ESS router. It is the feature
package in the 5ESS router office that will not allow a PSAP trunk to
access the trigger. Lucent said there is a fix available, but it is not
known if other supplier s products have this problem. Nancy will do
tests to determine the scope of the problem. Walt noted that if at the
router the LNP triggers are not loaded, this problem is not encountered.
Nancy will request that the router for the Downer s Grove switch have
the LRN triggers turned on in order to include this in the field test.
Test Team Meeting ended at 10:30 AM. Turned meeting over to SPoC team.