[Asterisk-Dev] UK Caller ID patch and new CVS

[Chris Stenton]

correct impedance setting is in the code for the UK for the new fxo
module. check the cvs log or the source.


On Fri, 2004-07-23 at 16:50, Conroy, Lawrence (SMTP) wrote:
> Hi again, Andrew, folks,
>   Yup - the X100P (or clone) is a PSTN card for use with single lines.
> Fine device, and WAY cheaper than a TDM4xx with a single populated
> FXO module (TDM01B), at least in the UK.
> 
> I assumed that you weren't seriously suggesting a TDM01B for a
> single analogue line (if they weren't back-ordered). Hence I
> guessed that the use case is "a few lines".
> 
> AFAICT, the TDM4xx modules don't do busy detection or call
> supervision or CLI or have settings for correct impedance
> right now for use in the UK - all we have is the *potential*
> to get these working sometime in the *future*.
> 
> If one does need a couple of lines, then one may have a choice
> - PSTN access or ISDN access.
> 
> In civilised countries (i.e. not here) it's cheaper to get a
> BRI than it is to get two analogue lines. Thus, if one needs
> more than one analogue line, it may be cheaper to go for a
> BRI from your Comms Provider.
> 
> If you DO go for a BRI (or a pair of BRIs) the card(s) WILL
> be cheaper (and, most important, it works, out of the box).
> 
> No grief with whether or not CLI works - it does now.
> Likewise, no grief about progress/call supervision - it
> works over here right now.
> 
> To sum up, if the use case is more than one line and you don't live
> in the U.S of A., then don't forget ISDN - it has several advantages
> (not least of which is that we don't do SPIDs over here).
> 
> If the use case is a single analogue line, then the price of an
> under-populated TDM4xx puts it outside the budget for most people
> - it's just too expensive at current UK reseller prices.
> 
> all the best,
>    Lawrence
> 
> On 23 Jul 2004, at 15:50, Andrew Kohlsmith wrote:
> > On Friday 23 July 2004 10:29, Conroy, Lawrence (SMTP) wrote:
> >>> Frankly though, I don't think ANYONE should buy these cards, clone or
> >>> no -- Get
> >>> the TDMxx series.
> >
> >> Why?
> >> Does progress tone/call supervision/CLI work in the UK for the TDM4xx?
> >> (at least now CLI works with the X100P :).
> >
> > The TDM card is a true Digium product, not an OEM card resold by 
> > Digium.  IIRC
> > the FXO module is far higher quality too.
> >
> >> In my experience, ISDN works very well with Junghanns's excellent
> >> chan_capi
> >> (and the AVM passive cards are cheaper) so if a couple of lines is all
> >> you need, ...
> >
> > The X101P doesn't support ISDN.  I thought we were talking PSTN here 
> > not ISDN?
> >
> > -A.
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