----------------------------- -------------------------- -----------------------
  **[Attendees]{.underline}**                              **[Via Conference
                                                           Bridge]{.underline}**

                                                           

  Barry Bishop (Ameritech)      Bob Wienski (Illuminet)    Bob Allen (Bell
                                                           Atlantic)

  Donna Navickas (Ameritech)    Jan Trout-Avery (Lockheed  Sandra Cheung (Pacific
                                Martin)                    Bell)

  Bonnie Baca (AT&T)            Steve Addicks (MCI)        Marilyn Murdock (SBC)

  Pat Elston (AT&T)             Suzanne Brooks (MCI)       Leslie Furlie (Sprint
                                                           PCS)

  Beth Watkins (AT&T)           Gary Lafleche (MCI)        Karen Kay (Time Warner)

  John Malyar (Bellcore)        Marcel Champagne (Nortel)  

  Mike Woodbury (Bellcore)      John Mahoney (Perot)       

  Ron Steen (BellSouth)         Dave Garner (Sprint)       

  Alan Brownstein (ESI)         Lisa Marie Maxson (TSE)    

  Doris Ford (ESI)              David Taylor (TSE)         

  Melinda Heath (ESI)           Brooke Brooks (WorldCom)   

  Holly Hogue (ESI)             Bettie Shelby (WorldCom)   

  David Mendes (ESI)                                       
  ----------------------------- -------------------------- -----------------------

The meeting was called to order by Bonnie Baca. She began by discussing
the status of the LNPA Selection Working Group and Task Force reports
and the schedule to discuss them at the NANC meeting tomorrow, April 15,
1997, with distribution to the FCC on May 1.

The meeting minutes from the April 2 conference call are being amended
to reflect Steve Addicks' concern regarding the requirement for the NPAC
to proceed when a matching create message is not received from the old
SP. In addition, the minutes from the March 20 meeting are being updated
to reflect Sandra Cheung's technical statement surrounding provisioning
for ported reserved numbers. Otherwise, the minutes were adopted as
written.

The primary purpose for the meeting was to finalize the Release 2 change
order requirements. Lisa Marie Maxson distributed the following
documents to all participants for use during the meeting:

1.  Release 2 Change Order Requirements (3/28/97)

```{=html}
<!-- -->
```
1.  NANC Change Order Summary (Rev 6 - 4/11/97)

```{=html}
<!-- -->
```
1.  NANC Change Order Implemented (Rev 2 - 4/11/97)

Lisa Marie Maxson led the team in a discussion of the following change
orders:

+----------------------------+-----------------------------------------+
| 1.  Ill 3                  | 1.  NANC 34                             |
+----------------------------+-----------------------------------------+
| 1.  Ill 8                  | 1.  NANC 35                             |
+----------------------------+-----------------------------------------+
| 1.  Ill 9                  | 1.  NANC 44                             |
+----------------------------+-----------------------------------------+
| 1.  Ill 10                 |                                         |
+----------------------------+-----------------------------------------+
| 1.  Ill 11                 |                                         |
+----------------------------+-----------------------------------------+
| 1.  Ill 58                 |                                         |
+----------------------------+-----------------------------------------+
| 1.  Ill 76                 |                                         |
+----------------------------+-----------------------------------------+
| 1.  Ill 79                 |                                         |
+----------------------------+-----------------------------------------+
| 1.  Ill 131                |                                         |
+----------------------------+-----------------------------------------+

Change Order Ill 3 - NPA-NXX filter enhancements, was discussed in
detail. This feature enhances the requirements for management of NPA-NXX
filters and results in the list of NPA-NXXs a SP wishes to receive.

Related to Ill 3, a new change requirement was suggested. Following are
the two options discussed:

1.  When audit skips certain SPs due to filtering, the results would
    indicate those SPs not audited due to filtering

2.  Allow audit to query LSMS for filtered NPA-NXXs and to remove
    offending TN from filtered LSMSs database if found (today there are
    no audits of filtered NPA-NXXs in LSMS)

The participants took a vote to determine whether there was a consensus
to include one of these requirements in Release 2, and the result was to
hold this requirement for a future release. However, Ameritech requested
that Option 2 be put into Release 2 for the Midwest Region.

Next there was a lengthy discussion of Portability Areas in connection
with Ill 8, 9, 10, and 11. Each change order was discussed and modified
primarily to reflect removal of the concept of associating a portability
area with LRN and to reflect, for Release 2, defaulting portability area
to a state level. The state level will be implemented in all four (4)
requirements, including Ill 9, specific tunables. This enables NPACs
operating in regions that span time zones to start the tunable timers
according to regionally defined parameters. For clarity, the portions
that remained of Ill 11 were merged into Ill 9 and 10, resulting in
elimination of Ill 11. Finally, there was agreement that the three (3)
remaining change orders (i.e., Ill 8, 9, and 10) would be accomplished
without any associated changes to the IIS requirements.

Ill 76 - Portability Area Indicator for SP (GD MO/ASN.1 impact) was
closed with no action. The remaining change orders listed above were
discussed, modified as appropriate, and included in Release 2. These
updated requirements were put out on the web (www.npac.com) on April 16.

Finally, Lisa Marie led a change management discussion to replace last
Friday's conference call. This week's (4/18/97) call will be used to
discuss the proposal prepared by Marcel Champagne for NANC 48 - Support
of Multiple SPIDs per SOA Association. Marcel's write up on NANC 48 is
attached for your review. The details on the conference call are:

Date: Friday, April 18, 1997

Time: 2:00 - 4:00 p.m. EDT

Bridge No.: 1-800-532-1188

Code: 6465

Also the team agreed to schedule the next meeting for May 12, 1997, from
10:00 - 5:00. **NOTE:** However, it was requested and agreed to move the
meeting to May 13 in Washington, DC, so that some members may attend the
NANC meeting on May 14. The change management meeting is scheduled for:

May 13 from 9:00 a.m. - 3:00 p.m.

Bellcore

2101 L Street NW

Suite 600, Conference Room B1B2

Washington, DC

Conference Bridge: (334) 262-0740

Participant Code: 118610