"what T-Mobile USA's position is on allowing subscribers to run
SIP over the 3G network?"

T-Mobile has no restrictions on using SIP as a signaling protocol. As
already mentioned in my post, whether you are running a server or a
client, that you deal with the NAT traversal.

--
Roman Baumgaertner
Sr. SW Engineer-OSDC
·T· · ·Mobile· stick together
The views, opinions and statements in this email are those of the
author solely in their individual capacity, and do not necessarily
represent those of T-Mobile USA, Inc.

On Sep 23, 4:11 pm, JoaJP <[email protected]> wrote:
> NAT's a problem, so is getting across Hotspot portals and, worst of
> all, hunting for WiFi. I've done that a few years ago for short while
> (on a non-Android device, of course), and it gets old real fast.
> This means one would expect to run SIP over the 3G data network. I
> haven't had an opportunity to just go and try it out... my question
> here is what T-Mobile USA's position is on allowing subscribers to run
> SIP over the 3G network?
>
> On Sep 23, 2:17 pm, "Roman ( T-Mobile USA)" <roman.baumgaert...@t-
>
> mobile.com> wrote:
> > Of course you could think of to run your Android device as a server
> > like system, but be aware that in case of cellular you have to deal
> > with NAT. This means all your clients have to know how to reach you.
> > One possibility to deal with this problem would be to use a cloud
> > service and notify the cloud about your new IP address.
>
> > In general you can easily support data traffic which does not need to
> > be in a session context (no streaming) like browsing. In this cases
> > you always can re-establish a connection.
>
> > To run your mobile Android server in a Wifi environment might be
> > easier to handle than cellular but this depends again how your Wifi
> > LAN is setup.
>
> > --
> > Roman Baumgaertner
> > Sr. SW Engineer-OSDC
> > ·T· · ·Mobile· stick together
> > The views, opinions and statements in this email are those of the
> > author solely in their individual capacity, and do not necessarily
> > represent those of T-Mobile USA, Inc.
>
> > On Sep 23, 3:18 am, Masoom Alam <[email protected]> wrote:
>
> > > Can Android be used as Virtual PBX. This means that, it can work as a
> > > virtual attendant for playing specific music files, call fowarding,
> > > recording messages. SipDroid is already available but it is just a client
> > > soft phone.
>
> > > Regards,
> > > M Alam
>
>
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