Document ZJgooqJR0Rgnv87kM5JG5r1VZ

TO: Bob Seymour JJH: JCL: TGG: RF XF: Interoffice Communication FROM: DATE: SUBJ: Tom Grumbles March 29, 1985 LCCC TELEPHONE PREFIX CHANGE I think the question of how long the recorded messages for the old 491-numbers on the MSDSTs should be maintained needs to be resolved. I will change the current MSDS's as they are reprinted and any new ones will, of course, have the new 494- prefix. This will probably mean that by the end of this year most MSDS's will be changed. However, the concern remains that there are many MSDS's currently in circulation that have the 491 numbers. For that reason, the recorded messages should be maintained for at least a year, with an option to continue longer if indicated. Please call so we can discuss this matter. Thomas G. Grumbles cc: Sid Pitts > M>|M