[sr-dev] Mobile Apps

[Klaus Darilion]

I guess the difference is that the mobile operator uses a different IP 
network setup, e.g. different firewall/NAT. For example, if the NAT has 
an ALG (application layer gateway) and rewrites SIP messages it often 
causes problems.

Some workarounds you can try:
- disable all nat_detect features and always force NAT traversal
- use a different port, not port 5060
- use SIP over TLS

regards
Klaus

On 25.09.2013 06:45, sam at dsmedia.com.sg wrote:
> Thanks for your reply.
> The server is running with public IP address. But we are facing these
> problem.
>
>  1. Audio can connect but can't hear audio in both sides.
>  2. Video connection never happens. It was processing for very long.
>
> There is no problem when we test in home wireless network.  The audio
> and video connects w/o any problem. The SIP server is still the same
> server which is located at data centre.
> Not able to connect in 3G/4G.
> Thanks for your help.
>
>     ----- Original Message -----
>     *From:* Muhammad Shahzad <mailto:shaheryarkh at gmail.com>
>     *To:* sam at dsmedia.com.sg <mailto:sam at dsmedia.com.sg> ; Kamailio
>     (SER) - Development Mailing List <mailto:sr-dev at lists.sip-router.org>
>     *Sent:* Wednesday, September 25, 2013 10:38 AM
>     *Subject:* Re: [sr-dev] Mobile Apps
>
>     If you are using default kamailio.cfg then it should work out of the
>     box, you only need to ensure that your server is running on machine
>     with public IP address, so, it would be reachable over 3G / 4G
>     networks etc.
>
>     Thank you.
>
>
>
>
>     On Wed, Sep 25, 2013 at 1:05 AM, <sam at dsmedia.com.sg
>     <mailto:sam at dsmedia.com.sg>> wrote:
>
>         __
>         Dear Sir/Madam,
>         I need some assistance.We are developing a mobile Apps. The apps
>         has module for chat which consists of audio and video.
>         I am using Linphone for client and Kamailio for SIP Server.
>
>         When we tested it works in the same wifi only. Does not work in
>         3g/4G or different wifi networks. Text is ok.
>         Audio call is connected but can't hear audio in both sides. Same
>         for video. It is processing for very long. Please assist on this.
>         Thanks
>         SamG
>         DS Media
>         http://www.dsmedia.com.sg
>         https://www.youtube.com/user/Dsmediatv
>
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>
>
>
>
>     --
>     Mit freundlichen Grüßen
>     Muhammad Shahzad
>     -----------------------------------
>     CISCO Rich Media Communication Specialist (CRMCS)
>     CISCO Certified Network Associate (CCNA)
>     Cell: +49 176 99 83 10 85
>     MSN: shari_786pk at hotmail.com <mailto:shari_786pk at hotmail.com>
>     Email: shaheryarkh at googlemail.com <mailto:shaheryarkh at googlemail.com>
>
>     No virus found in this message.
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>     09/24/13
>
>
>
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