[Asterisk-Users] dtmfmode and IAX protocol

[Joseph]

On Fri, 2005-02-11 at 00:17 -0600, Rich Adamson wrote:
> Joseph has been working at bringing up an asterisk box as kind of a
> newbie, and I think he's using a Sipura as his fxs interface into
> asterisk. He's having a problem with asterisk passing dtmf to FWD,
> but didn't say how he's accessing the bank or fedex. So, without
> a fair amount more detail from him, there's no way to answer his 
> questions or guess at the problem.
> 
> ------------------------
> > Exactly. (I was hoping he'd come to his own conclusions.) So... if the
> > Sipura does not do IAX, then it's quite possible that you're not doing IAX
> > on the Sipura. Which means the whole "dtmfmode and IAX protocol" is moot...
> > 
> > -Michael
> > 
> ------------------------- 
> > No.

I'm using Sipura-3000 unit to connect to PSTN and my cordless phone.
The prefer an external unit over internal card; as I went enough several
internal modems on my PC over time.  If there was a bus change and I
changed the board my modem cards were just piece of junk.
In addition it is easer to switch to backup PC if the main one goes down
- all I need to do is to change the IP address on the Sipura-3000 and my
sip phone (in all 30sec in total including starting *-on backup PC).

With an internal card the downtime is a bit longer.  
If I could find an external Adapter with native IAX connection with 2-4
ports I would buy it today.  I know digium has one but it is only one
port unit and I would need minimum one-FXS/FXO ports.

So, Mark Eissler might be right the Telco system is complicated
environment and not everybody follows standards.  So the this might be
the case between FedEx and UPS.

-- 
#Joseph