FYI, The NB in Holland (TRQ) now accept prTBR 21 test reports from labs in countries that uses prTBR 21 reports as (alternative) national standard i.e. UK, Sweden and Denmark.
There is also a Dutch version of prTBR 21 called T11-13 (published recently), which will replace the existing T11 series as far as I understand. Regards, Roger Magnuson TGC AB -----Original Message----- From: [email protected] Sent: Thursday, October 23, 1997 17:29 To: [email protected]; GECAB/EST/ROGER Subject: BOUNCE [email protected]: Non-member << File: UUCP_ENV.TXT >> From: "Rene Debets" <[email protected]> Subject: RE: Dialtone Detection for Netherlands Approval Dear Duane T11 series of specification is still in effect. Might be TBR21 soon. T11 still requires 2V rms (open circuit) for dialtone and 1V (again open circuit) for Busy tone detection. Into 6oo ohms the above numbers are 1Vrms (2.2dBm) and 0.5Vrms (-3.8dBm) so that is not so bad. Wouldn't you want to have a bit of headroom for V.34 or the like anyway? I had the impression that the transmit side of things is a lot more difficult at 3.3V compared to the receive side. All this was as of four weeks ago. Regards, Rene ---------- From: [email protected] on behalf of Duane J. Marcroft Sent: Wednesday, October 22, 1997 7:30 PM To: [email protected] Subject: Dialtone Detection for Netherlands Approval TREG'rs, I don't have the latest TE approval specifications for Holland. Could someone confirm the Dutch require a modem to detect a dialtone signal at 2 volts rms. NET 4 has a voltage much lower than this. The DAA is connected to a codec with a 3.3 V. supply and we are having a problem detecting a 2V rms dialtone signal. A signal this large overloads the codec front end. Any help provided would be appreciated. Thank you in advance. Regards, Duane
