[Freeswitch-users] mobile to mobile over 3g/4g

[Daniel Ivanov]

I have been following this thread fo some time. Trying to shave off some
delay with direct connectivity has cone to my mind a couple of times too.
The trouble is that mobile devices are not your typical ethernet nodes.
What you see as devices in the same subnet are often several complex hops
away in terms of cell roaming connectivity.
In relative terms, imagine that the ipv4 address space is already a VPN and
the rules across segments are uniquely diverse.
If you find it working on some mobile networks, you can still use ICE as
suggested beforehand to present media candidates and not needing to retry
the call. If device to device fails, it switches to proxy.
18 янв. 2015 г. 1:50 пользователь "Brian West" <brian at freeswitch.org>
написал:

> FYI proxy media mode is not needed and not what you think it is, FS
> always proxies the media, on AT&T you just need stun and it just works for
> me.
>
> On Saturday, January 17, 2015, Kristian Kielhofner <kris at kriskinc.com>
> wrote:
>
>> You want ICE.
>>
>> On Saturday, January 17, 2015, Assaf Dahary <adahary at gmail.com> wrote:
>>
>>> I desided to check each mobile operator network by trying first bypass
>>> mode and if it fails then redial automaticalky with proxy mode (and not
>>> trying it again with this operator).
>>>
>>> For those mobile network (fail bypass) users the alternatives can be:
>>> - buying static public ip from operator.
>>> - setting up mobile operator VPN  group with public access to FS.
>>> - setting up common local VPN server to share direct connectivity for
>>> users group.
>>> On Jan 17, 2015, at 16:30, Bote Man <bote_radio at botecomm.com> wrote:
>>>>
>>>> I have it on good authority that AT&T in the U.S. assigns public i.p.
>>>> addresses to each device, but is subject to firewall rules whatever they
>>>> might be.
>>>>
>>>>
>>>>
>>>> They offer "enterprise static i.p. service" that allows greater
>>>> freedom, however. Sounds expensive and scary.
>>>>
>>>>
>>>>
>>>> I agree with Steven Ayre: I would not depend on having necessary
>>>> connectivity.
>>>>
>>>>
>>>>
>>>> Bote
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> *From:* Assaf Dahary
>>>> *Sent:* Thursday, 15 January, 2015 11:47
>>>> *Subject:* Re: [Freeswitch-users] mobile to mobile over 3g/4g
>>>>
>>>> It seems that some mobile operators allow internal direct connectivity
>>>> and some just block it.
>>>>
>>>> Direct connectivity will increase call quality and drop call latency.
>>>>
>>>> I should start mapping mobile operators by trying first bypass media on
>>>> internal calls and if fail then to cancel it and call via FS .
>>>>
>>>> On Jan 15, 2015, at 18:32, Steven Ayre <steveayre at gmail.com> wrote:
>>>>
>>>> I would expect that while it might work on some operators you won't be
>>>> able to rely on it working for all mobile networks.
>>>>
>>>>
>>>>
>>>> If your users aren't under your control and therefore aren't on
>>>> networks you've had an opportunity to test this on then you'll probably see
>>>> many calls with no audio.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On 15 January 2015 at 13:33, Assaf Dahary <adahary at gmail.com> wrote:
>>>>
>>>> Hi,
>>>>
>>>> I'm currently using bypass_media to make two mobile call each directly
>>>> (RTP bypass FS) over the same wifi network.
>>>>
>>>> Once I detect that caller and callee are sharing the same WiFi network
>>>> then I switch to bypass_media in dialplan (works well in big complex
>>>> buildings).
>>>>
>>>> I would like also to use the same bypass_media mode when mobiles
>>>> connect over 3g/4g data mobile network.
>>>>
>>>> I fully understand that both mobiles should be connected to the same
>>>> mobile operator and should share a common subnet routing (without NAT) for
>>>> them to 'see' each other private IP addr.
>>>>
>>>> Is it possible for two mobiles on the same mobile 3g/4g network to ping
>>>> each other using their private IP addr?
>>>>
>>>> Should mobile operators allow this kind of direct peer connections (I
>>>> couldn't ping internally with my Orange mobile operator)?
>>>>
>>>> Did anyone successfully make a direct bypass_media call between two sip
>>>> mobiles over 3g/4g network?
>>>>
>>>> Regards
>>>>
>>>> assaf
>>>>
>>>>
>>>>
>>>> ------------------------------
>>>>
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>>>>
>>
>> --
>> Sent from mobile device
>>
>
>
> --
>
> *Brian West*
> brian at freeswitch.org
>
>
> *Twitter: @FreeSWITCH , @briankwest*
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>
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>
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