[A*UG] tdm what?

[Brett Nemeroff]

The confusion came from the fact that Digium tried to explain it to
everyone; which was a mistake. Basically that FXO ports signal with FXS
signalling (duh, they talk to FXO ports), and FXO ports talk with FXS
signalling.

However that is more than you need to know.. All you need to know is that
you attach Phones or (S)tations to FXS lines and you attach phone lines to
FXO Ports.
-Brett

On Sun, February 19, 2006 10:13 am, Lindsay Haisley wrote:
>>From www.answers.com .....
>
> FXS
>
> (Foreign eXchange Station) The interface provided by the telephone
> company to its customers, which includes dial tone, power and ring
> voltage. The telephone jack on the wall is an FXS interface. The plug on
> a telephone is a Foreign Exchange Office (FXO) interface, which provides
> on-hook/off-hook loop closure to the telephone company. Thus, an FXO
> phone plugs into an FXS jack.
>
>
> FXO
> A Foreign Exchange Office, or FXO, is a telephone interface that
> receives POTS, or Plain old telephone service. It generates the on-hook
> and off-hook indicators used to signal a loop closure at the FXO's end
> of the circuit. A standard analog telephone is such a device.
>
>
> ... so your system needs to have one FXO and three FXS interfaces.
>
>
> On Fri, 2006-02-17 at 18:19 -0600, Donn Washburn wrote:
>> Hey Group:
>>
>> I am considering buying a digium Asterisk TDM pci card.
>> However, I thought I had it figured out but I saw someone suggest it
>> different.
>>
>> What I want is one standard telephone line > Asterisk server to 3 POTs
>> phone.  This is going to be a test learning device for this house.
>>
>> My question is - is there one FXS and three FXO modules or is it one FXO
>> and three FXS.  I believe it to be one FXS and three FXO devices
>>
>> Looking over Digiums site did not clear up my confusion.
>