"A. Alan Toscano" <0003382352@mcimail.com> (08/09/90)
In TELECOM Digest V10 #548, in an annotation to an article by Woody about Area Code 510, our Moderator says: >The TWX areas are 410, 510, 710 and 910 for the USA; 610 for Canada and 810 >for Mexico ... Now I think Western Union has all directory for the >USA in 410-555-1212. I don't believe there is a TWX network (Telex II in Western Union parlance) in Mexico. US TWX Directory Assistance, from "four-row" machines, was 910-555-1212 until Western Union replaced it with a computer on 910-221-5151. The US TWX Area Codes (for "four-row" machines) were: 510 (entire US?), 710 (NE US only?), 810 (SE US only?), and 910 (Western US only?). As I recall, "three-row" machines used normal Area Codes such as 312 for Chicago. I think "three-row" machines reached Directory Assistance by dialing simply 555-1212, but my memory of Bell System TWX has become rather rusty. Wasn't an operator reached by dialing 954-1212? I've understood that Canadian TWX remains well integrated into the PSTN. The observations of our Canadian friend, Woody, about TWX warbles on 510-555-1212 might suggest that, for Canadian wire centers, separate routing tables will be needed for TWX class-of-service lines vs. voice lines with regard to calls to 510 numbers. I wonder: How this will be handled in the toll network? A. Alan Toscano Voice: 512 696 0307 MCI Mail: ATOSCANO P. O. Box 290008 Telex: 6975956AAT UW CIS: 73300,217 San Antonio, TX 78280-1408 0003382352@mcimail.com Prodigy: BHWR97A