Carl Moore (VLD/VMB) <cmoore@brl.mil> (09/14/90)
Sander J. Rabinowitz <0003829147@mcimail.com> writes: >My own area (area code 313) is in a transition to 1-NXX-NXX-XXXX >dialing, such that both methods of dialing ... are presently allowed. This refers to 1+7D and 1+NPA+7D. But I wrote, without having seen Sander's note: >... 313 area in Michigan, according to this Digest, reduced >its intra-NPA toll calls to 7D ... Since I am not from Michigan, I can't resolve this discrepancy. But in either case, 313 seems to be getting ready for N0X/N1X prefixes, right? (If any area is changing to accommodate the NXX area codes, as opposed to N0X/N1X area codes, let me and/or the Digest know; however, the NNX area codes are not projected to arrive till around 1995, right?) [Moderator's Note: Sander Rabinowitz replies to Carl... PAT] Date: Thu, 13 Sep 90 12:30 EST From: "Sander J. Rabinowitz" <0003829147@mcimail.com> Subject: 313 Long Distance Correction In the TELECOM Digest issue of 13 September 1990, I wrote the following: > My own area (area code 313) is in a transition to 1-NXX-NXX-dialing, > such that both methods of dialing are allowed. One interesting > side effect is that long-distance carrier access codes can be used > for all 1-NXX-NXX-XXXX, even if the call is _within_ the same LATA! I don't know if anyone caught this [knowing the audience I'm writing to, it may be ALL of you ;-) ], but when I wrote the original post, I thought that area code 313 was exactly one LATA. It turns out there are three -- the Detroit LATA (where I am), a second LATA from Ohio that overlaps slightly into Michigan, and a third LATA covering everywhere else. And it appears I may have goofed in another way: Carl Moore <cmoore@brl.mil> notes: >But in either case, 313 seems to be getting ready for N0X/N1X >prefixes, right? (If any area is changing to accommodate the NXX >area codes, as opposed to N0X/N1X area codes, let me and/or the >Digest know; however, the NNX area codes are not projected to >arrive till around 1995, right?) My use of NXX was purely accidental. Yes, I believe 313 is preparing for N0X/N1X. Also, I cannot say definitively whether Carl's earlier statement is in conflict with mine, but rather than speculate, I will leave that question to all other TELECOM Digest readers. I apologize for any confusion my earlier message may have caused. Sander J. Rabinowitz -- +1 313 478 6358 -- 0003829147@mcimail.com The University of Michigan-Dearborn (Graduating Senior).