In a message dated 96-06-19, Mark Murphy writes: >It has recently been brought to my attention that these requirements no >longer existed in Holland (because Holland is now primarily DTMF). Can >anyone confirm that these pulse dialing requirements no longer exist for PSTN >terminal equipment?
Mark: To my knowledge, the 140 volt transient limiter requirement still applies to pulse dialing in the Netherlands. However, there is no requirement that TE be able to pulse dial in the Netherlands. Since 100% of the central office lines in the Netherlands now accept DTMF dialing (at no extra charge), there is little incentive to provide pulse dialing. As you point out, some extra circuitry can be eliminated if pulse dialing is not supported. By the way, a similar requirement for a transient limiter applies to pulse dialing in Australia. My understanding is that about 90% of the central office lines in Australia now accept DTMF dialing. I believe they expect to hit 100% within a year or so. In discussing the option of not offering pulse dialing in these countries, some people I have talked to have worried that older electromechanical PBXs might still require pulse dialing. I have chosen to ignore this possibility, on the assumption that such situations are probably rare, and are probably decreasing anyway. If any other treggers think this is a significant issue, I'd like to hear from you. Joe Randolph Telecom Design Consultant Randolph Telecom, Inc.
