Holger Schmidt <[EMAIL PROTECTED]> wrote:
>
> Hi,
>
> Are there any standards for push-to-talk services based on SIP beside
> the OMA standards for push-to-talk over cellular (PoC)?
>
> If there are no standards beside, is it useful to implement the OMA
> standards in traditional IP-networks?
>
> Thanks,
> Holger
There's a set of whitepapers by Comneon, Ericsson, Motorola, Nokia &
Siemens that describe something very similar to the OMA stuff and are
a de-facto standard. From their cover letter:
> The PoC Industry Consortium Member Companies strongly support the
> work of the Open Mobile Alliance ("OMA") to create a global, open and
> interoperable standard for PoC.
> ...
> These specifications were developed to fulfill short-term interests
> in the market prior to availability of the OMA standards. In order to
> overcome limitations of the early deployments, these PoC
> specifications contain some divergences from IETF and 3GPP standards
> and these are documented in the Architecture specification.
-troy
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