One-X Mobile strictly using data plan on mobile

[98Converter]

I'm fairly certain that with One-X Mobile that the only times the data channel is used on a mobile is to:

1.) Initiate a request from the PBX to dial a number
2.) Corporate directory
3.) Listen to voicemail (using visual voicemail on the mobile)

My problem is that I have users traveling in remote parts of the world that are racking up huge ($3k-$5k) mobile bills from calling all parts of the world. I was thinking that giving them One-X mobile could reduce that cost (because we have 30 sites around the world we could route the calls out of). But even if they use it, the PBX is still calling them and they are still be charged air/int'l roaming charges...

It would be great if they could generate a call using the data channel of the mobile phone connecting back to the PBX. I thought I read about someone doing this, but can't recall.

Any input/insight would be great.

Thanks,
98C

We are what we repeatedly do. Excellence, then, is not an act but a habit. ARISTOTLE 384-322 B.C.

 

[ktripp]

This sounds like maybe the Communicator soft phone maybe of value to you. This way the soft phone is used via a VPN into corporate and use a voip call while traveling yet use the existing pbx infrastructure.

 

[98Converter]

Communicator Softphone? How's that work, and where do I get it? Is it the same as One-X Communicator Softphone?


Thanks,
98C

We are what we repeatedly do. Excellence, then, is not an act but a habit. ARISTOTLE 384-322 B.C.

 

[ktripp]

Yes, it's the same. You can get it from Avaya's web site. It's just a piece of software you install on a PC and emulates the end users assigned extension via voip.

 

[98Converter]

Oh - we've been using that since inception...

I'm more curious about a mobile app that will deliver the call over the data channel of the mobile/cell back to the PBX and originate the call from there.


Thanks,
98C

We are what we repeatedly do. Excellence, then, is not an act but a habit. ARISTOTLE 384-322 B.C.

 

[wildcard100001]

The SIP / FMC (fixed mobile convergence) PDA client will do what you are thinking...via WiFi only though. Once you are out of range of WiFI...no dice. You also need the CM feature server, System Manager and Session manager servers.

Wildcard

 

[meatman]

If I'm reading this correctly; you want to be able to use the mobile network's Wireless WAN data network to carry VoIP traffic?

Apologies if you already know this:

If they're roaming, that will wind up being vastly more expensive than merely sticking to voice roaming if your provider charges extortionate prices for data roaming as many around the world tend to. $15/MB is a rough median point. G.729 traffic uses ~13MB/hour each way and G.711 uses ~35MB/hour each way. So, for each minute of G.729 traffic you're looking at ~$6.50/minute no matter what voice traffic is passed. Silence, ringback, reorder tones, etc etc.

That's not even taking into account the vagaries of WWAN data transmission, lag, etc etc etc (3G/UMTS is ok on lag most times, EDGE is very much not and GPRS doesn't even have the bandwidth to properly 'do' VoIP).

 

[JayNEC]

With the latencies involved with cellular data networks (250ms and up) and the bandwidth issues, VOIP over a mobile data plan is going to be unusable. If anyone has a different experience I would love to hear..