Hello,
I need some clarification on TDM400P.
While browsing the Digium site I see that the TDM400P wildcard
is being used as base card for other TDM series cards.
I wanted to know what basically the TDM400P card offers.
If you see the specs it says :
" The Wildcard TDM400P is a half-length PCI 2.2 compliant card
that supports from one to four telephone interfaces for connecting
analog telephones or analog lines to a PC "
The term :
" one to four telephone interfaces for connecting
analog telephones or analog lines "
In terms of FXO and FXS what does it mean. I can see that
it has four RJ 11 sockets.
How will you decide which of the four interface to use for
what. I mean FXO or FXS.
Thanks in advance.
Varun
On Mon, 2005-01-31 at 15:30 +0500, varun_saa@vsnl.net wrote:> Hello, > I need some clarification on TDM400P.The TDM400P card by itself has no use. You purchase a mix of FXS and FXO daughter cards (they are coloured Red and Green) which pug into four available positions on the card. That decides the functionality of the TDM400 card.> In terms of FXO and FXS what does it mean. I can see that > it has four RJ 11 sockets. > > How will you decide which of the four interface to use for > what. I mean FXO or FXS.-- . . ___. .__ Posix Systems - Sth Africa. e.164 VOIP ready /| /| / /__ mje@posix.co.za - Mark J Elkins, Cisco CCIE / |/ |ARK \_/ /__ LKINS Tel: +27 12 807 0590 Cell: +27 82 601 0496
> Hello, > I need some clarification on TDM400P. > > While browsing the Digium site I see that the TDM400P wildcard > is being used as base card for other TDM series cards. > > I wanted to know what basically the TDM400P card offers. > If you see the specs it says : > > " The Wildcard TDM400P is a half-length PCI 2.2 compliant card > that supports from one to four telephone interfaces for connecting > analog telephones or analog lines to a PC " > > The term : > > " one to four telephone interfaces for connecting > analog telephones or analog lines " > > In terms of FXO and FXS what does it mean. I can see that > it has four RJ 11 sockets. > > How will you decide which of the four interface to use for > what. I mean FXO or FXS.The fxo modules are designed to interface to a pstn line (where ringing comes from the central switching office). The fxs modules are designed to have standard telephone sets plugged into them, and the module provides ringing voltage to the telephone. On the digium web site, a tdm04b is the tdm card with four fxo modules installed. The tdm40b is the same tdm card with four fxs modules installed. The tdm22b has two fxo and two fxs modules. If you incorrectly connect a fxs module to a pstn line, you will likely blow the module making it useless.
varun_saa@vsnl.net wrote:> Hello, > I need some clarification on TDM400P. > > While browsing the Digium site I see that the TDM400P wildcard > is being used as base card for other TDM series cards. > > I wanted to know what basically the TDM400P card offers. > If you see the specs it says : > > " The Wildcard TDM400P is a half-length PCI 2.2 compliant card > that supports from one to four telephone interfaces for connecting > analog telephones or analog lines to a PC " > > The term : > > " one to four telephone interfaces for connecting > analog telephones or analog lines " > > In terms of FXO and FXS what does it mean. I can see that > it has four RJ 11 sockets. > > How will you decide which of the four interface to use for > what. I mean FXO or FXS.You purchase the FXO, FXS, or any combination of FXO and FXS modules.
On Mon, 31 Jan 2005 06:12:53 -0600, Rich Adamson <radamson@routers.com> wrote:> If you incorrectly connect a fxs module to a pstn line, you will > likely blow the module making it useless.Wow, i think it shoud be more fool-proof ;) Lucky I tried first with an analog phone in my TDM11B... Julian.
----- Original Message ----- From: Mark Elkins <mje@posix.co.za> Date: Monday, January 31, 2005 4:51 pm Subject: Re: [Asterisk-Users] TDM400P specs clarification> On Mon, 2005-01-31 at 15:30 +0500, varun_saa@vsnl.net wrote: > > Hello, > > I need some clarification on TDM400P. > > The TDM400P card by itself has no use. You purchase a mix of FXS > and FXO > daughter cards (they are coloured Red and Green) which pug into four > available positions on the card. That decides the functionality of the > TDM400 card. > > > In terms of FXO and FXS what does it mean. I can see that > > it has four RJ 11 sockets. > > > > How will you decide which of the four interface to use for > > what. I mean FXO or FXS. > > -- > . . ___. .__ Posix Systems - Sth Africa. e.164 VOIP ready > /| /| / /__ mje@posix.co.za - Mark J Elkins, Cisco CCIE > / |/ |ARK \_/ /__ LKINS Tel: +27 12 807 0590 Cell: +27 82 601 0496 > > Thanks a lotVarun
----- Original Message ----- From: Rich Adamson <radamson@routers.com> Date: Monday, January 31, 2005 5:42 pm Subject: Re: [Asterisk-Users] TDM400P specs clarification> > Hello, > > I need some clarification on TDM400P. > > > > While browsing the Digium site I see that the TDM400P wildcard > > is being used as base card for other TDM series cards. > > > > I wanted to know what basically the TDM400P card offers. > > If you see the specs it says : > > > > " The Wildcard TDM400P is a half-length PCI 2.2 compliant card > > that supports from one to four telephone interfaces for > connecting > > analog telephones or analog lines to a PC " > > > > The term : > > > > " one to four telephone interfaces for connecting > > analog telephones or analog lines " > > > > In terms of FXO and FXS what does it mean. I can see that > > it has four RJ 11 sockets. > > > > How will you decide which of the four interface to use for > > what. I mean FXO or FXS. > > The fxo modules are designed to interface to a pstn line (where > ringing comes from the central switching office). > > The fxs modules are designed to have standard telephone sets > plugged into them, and the module provides ringing voltage to > the telephone. > > On the digium web site, a tdm04b is the tdm card with four fxo > modules installed. The tdm40b is the same tdm card with four > fxs modules installed. The tdm22b has two fxo and two fxs modules. > > If you incorrectly connect a fxs module to a pstn line, you will > likely blow the module making it useless. > >That was very helpful, Thanks Varun