On Fri 19 Jul at 07:11 Bill Grimsley (3:640/305.9{at}fidonet) wrote to Arthur Marsh:

AM> If the modem doesn't recognise service tones, there are 
AM> restrictions on dialing out that are more retrictive 
AM> than if the modem does support service tone recognition.

 BG> Any idea where I can find the "official" Australian telco 
 BG> tone frequencies and their durations?  I asked an engineer 
 BG> friend of mine the other day (he's now the longest serving 
 BG> Telstra employee in Australia), but he told me that he does 
 BG> not have that info, nor is it readily available.  Whilst the 
 BG> Courier's tone recognition is not user-programmable, I'd 
 BG> like to pass on the details to USR, so that they might code 
 BG> their 061 SDLs detect local tones a little better than they 
 BG> do right now.

It's all in Austel Technical Standard 002 - 1996 "Analogue
Interworking and Non-interference Requirements for Customer Equipment
Connected to the Public Switched Telephone Network" determined by
Austel on 8 March 1996.

Available for browsing or sale from Standards Australia in your state or
territory's capital city.

--- msgedsq 2.1