ATTENDEES: Anne Steiner and Armen Basmajian, ATT;

Tom Santos, Pacific Bell; Karen Mitchmeyer, SBC;

Wendy Kan, Stentor; Dave Whitney, Bell South;

Greg Toth, Worldcom; Raj Udeshi, Siemens;

Kathy Passler, SPRINT; Diane Hargrove, Worldcom;

Martha Mikesell, Pacific Bell; Lori, Consolidated;

Susan Brooks, MCI; Patrick Brassel, LCI???;

Arnette Schultz, Lucent; Scott Wagner, SPRINT;

Elaine Elliott, Bell Atlantic; John Rollins, GTE;

Jill Blakeley, Time Warner.




1. Prioritize Call Codes to vendors

2. Readout of regional steering committees’


3. Information on Illinois ICC B&R team call of

7/14 relative to NXXX code exhaust relief



Following are minutes in chronological order.


No one has forwarded host/remote information as yet. We would like them to be forwarded to Marie

by the 21st (July) so we can discuss at next meeting. The information asked for are: (1) How many host/remote relationships exist; (2) How many remotes have their own NPANXX; (3) How many HOSTS serve multiple Rate Centers.


John Rollins provided an in-depth description of the need for different LRNs for a given switch.



RC 1





Switch A has a toll trunk and a local trunk to choose from when delivering a call to Switch B, depending on which rate center the call is to. Switch B is serving two rate centers. In this case, switch B needs two LRNs. Also in this case two LRNs are available since there are two NXXs already working at switch B. However, the need for two LRNs could be eliminated if the jurisdiction allowed combined trunks between the two switches.


It was noted that the requirement for a minimum of two LRNs per LATA per switch allows for handling NPA splits.


We tried to determine whether any problems exist when a switch serves two states. Where each state has it’s own NXX, the LRN is present so there is no problem as long as porting across state boundaries

is not allowed.








Band C Band B

Band A




Imagine the above circles are concentric and represent local bands. Depending on mileage,

the charge is Band A, or B, or C rates. Due to

NXX exhaust, at least one new local provider has

used a new NXX to serve an area much larger than a given incumbent rate center. The net result of this is that the existing LEC tariff will sometimes charge more and sometimes charge less for a given mileage because the new super rate center can only be assigned one set of coordinates. The "more" and "less" referred to is relative to a customer next door to one served by this super rate center NXX. This problem occurs even without porting. When the new LSP starts to port to this switch (LRN), the problem may or may not exist for the ported customers number. If the new LSP honors the porting rule as stated in our June face to face, there is no additional rating issue. If not, there are new rating anomalies. The problem is mostly manifested in end user confusion. In all cases, we should consider that we will continue rating on the calling and called numbers, not the LRN, for end user billing.


Call Code prioritization. Which call codes we want vendors to attach the originating LRN module to first. Note the a MEDIUM priority means we really are not sure and please research the use of the call code.


See attached "Prioritization of Call Codes" matrix (min0715.xls).


Please forward a copy of other exhaust relief methods (other than the number pooling under LRN method) being considered by ICCF to Tom or Marie.


David Whitney will host the next call on 7/30 at

11:00 EDT. The mml is (205) 969-4213 PIN #6572.