distinguished ring question

Gert Doering (gert@greenie.muc.de)
Sat, 27 Dec 1997 17:05:42 +0100


Hi,

Cor wrote:
> I'm living in canada, and Bell-canada has a feature they call 'Ident a call', 
> here is it the confusing
> already strarts... is 'Ident a call' the same as distinguished ring ? At this 
> moment i have one line with 2 numbers. The difference when you call the second 
> number is not the tone of the ring but it rings twice shortly after the first 
> ring.

This is what other telcos call "distinguished RING", yes.

> Both my modems (a US robotics and a Generic Rockwell) detect 2 rings shortly 
> after each other.

On most modems, you will have to enable this feature, see Jan's mail to
that matter. (The modem manual is your friend...)

> When i look in the code of mgetty i find the ring_chat_action table, this 
> table maps, as far as i can see, the modem results to an internal action. In 
> this table are 5 different result codes for the different types of rings. 
> Looking at this table i suppose my modem must be able to see the difference 
> between the types of rings already and will return a different result code for 
> the different types of rings .

Yes. It's some S-Register.

(The distinguished RING code right now is an ugly mess ... I *will* rewrite
it one day, but class 1 just disturbed all my plans concerning that matter).

gert
-- 
Gert Doering
Mobile communications ... right now writing from *AWAY* :-)) 
... mobile phone: +49 177 2160221 ... or mail me: gert@greenie.muc.de
.