[Asterisk-Dev] CSTA interface comments

[Mark Aiken]

CSTA over SIP is used by LCS and would be a fantastic addition for Asterisk.


The spec is documented as TR-087 on the EMCA web site. The more common name
for this is uaCSTA.

uaCSTA is being added by Mitel, Nortel, Siemens.

If uaCSTA is in line with what your doing then I'm willing to help with the
effort.

Mark.

On 9/28/05, John Todd <jtodd at loligo.com> wrote:
>
>
> I've recently started to get involved in proprietary controls for
> existing PBX platforms, and I've run across a standard which may have
> some interest to those of you on this list. The CSTA (Computer
> Supported Telecommunications Applications) seems to be very similar
> to (depending on your views) the Manager Event interface, or AGI.
> While I don't suggest that either of those two existing interfaces is
> sub-standard, I would love to hear from anyone with more experience
> with CSTA about why it is a better or worse protocol for interaction
> with Asterisk. It seems (again) that there is a standard that exists
> for interfacing a PBX (or other telephony switching system) to
> external applications on a different platform. Perhaps even some of
> the established applications support CSTA in enterprise environments
> might be able to be linked to Asterisk quickly via this method (I
> know that Envox http://www.envox.com/ uses CSTA - anyone else?)
>
> While there is very little "real example" data in these documents,
> the documentation is at least reasonable. I'd love to see a human
> (versus an ITU participant) explain how this actually works, and
> provide a serial data exchange in a ladder diagram for a few examples.
>
> A CSTA interface module might be useful for patching Asterisk into
> existing platforms that use CSTA controls; places that Avaya, Nortel,
> Siemens, and others now have exclusive domain. A "swap-out" is a lot
> more appealing than saying "You'll have to write a glue layer to
> interface to this new system."
>
>
> http://www.ecma-international.org/activities/Communications/TG11/cstaIII.htm
> http://www.dragonnorth.com/tsapi/reference.html
>
> JT
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