In his recent TREG posting, Pete Van Raalte said: > Our Singapore distributor claims that the Telephone Authority of > Singapore (TAS) is putting on a lot of pressure to implement ITU > E.161:1993, option A. This requires that the letter Q be added to > the PRS on the 7 button and that Z be added to the WXY on the 9 > button. TAS is prohibiting sale of telphones without this > modification (effective 1 April 1996). > ... > 2) Is any other country enforcing this standard?
Yes. I recently saw a copy of the draft TIA-470-B, which was developed in concert with the CSA T.510. It specifies the labeling of DTMF keypads in conformance to ITU-T E.161 where "PQRS" is on the "7" key and "WXYZ" is on the "9" key. I believe NZ and Australia once had requirements to put "QZ" on the "1" key, but have changed that to conform to E.161 as well. Sounds like a bandwagon to me. -- Scott R. ------------------------------------------------------------------------- Scott Roleson, PE | Internet: [email protected] EMC & Telecom Engineer | http://www.WP.com/SRoleson San Diego Division MS 8-60 | Telephone: +1-619-655-4809 Hewlett-Packard Company | FAX: +1-619-655-5931 16399 W. Bernardo Drive | Amateur Radio: KC7CJ San Diego, CA 92127-1899 USA | Any opinions are my own, not HP's. -------------------------------------------------------------------------
