Hello TREG'ers,
1. I'm trying to make up a listing of the PSTN requirements
for all the countries.
It's gonna be like this :
---------------------------------------------
UK : NTR3, TBR21
Switzerland : TBR21
Germany : BAPT223 ZV 5
Sweden : TBR21
Denmark : TBR21
Europe : TBR21
USA : FCC Part 68
Canada : CS-03
Australia : TS 002
New Zealand : PTC 102, PTC 200
Singapore : PSTN 1
Japan : JATE Blue Book
Korea : KICS.KO-05.0014/R1
Hongkong : CR01
South Africa : DPT-TE-018,002,003,004,005,006,007,015
---------------------------------------------
But, I don't know PSTN requirements for following countries.
---------------------------------------------
China :
Russia :
Uzbekistan :
Taiwan :
Iran :
Lebanon :
India :
Indonesia :
Brazil :
Argentina :
Mexico :
---------------------------------------------
2. Which is more likely to interwork properly with the Chinese
analog PSTN, modem designed for UK or US ?
3. Which countries are able to use the US modem ?
UK : no
Switzerland :
Germany :
Sweden :
Denmark :
Europe :
USA : yes
Canada :
Australia :
New Zealand :
Singapore :
Japan : yes
Korea : yes
Hongkong :
South Africa :
China :
Russia : yes
Uzbekistan :
Taiwan :
Iran :
Lebanon :
India :
Indonesia :
Brazil :
Argentina :
Mexico :
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4. What is a meaning for the following modem parameters ?
return loss :
modem impedance :
transmit level :
dtmf tone levels :
ring frequency and cadence and amplitude :
out-of-band signal :
DC V-I :
ring detect voltage thresholds :
pulse break/make ratios :
auto-redial limitations :
How can I set this parameters for modem ?
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Does anyone have any firm information they can share ?
Thanks in advance !
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Jeongmin Cho, [email protected]
Pantech Media R&D Center, http://www.pantech.co.kr
110-1, Ongjung-ri Tongjin-myun Kimpo Kyungki-do
415-860 South Korea
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