Looks like Verizon have a ALG that blocks SIP.

https://support.counterpath.com/topic/verizon_hot_spot
https://www.onsip.com/blog/in-depth-verizon-blocks-sip-traffic-using-alg

On 29 August 2017 at 05:37, vikas sharma <vikas452@gmail.com> wrote:

Hi

i am trying to register my Linphone application with Freeswitch on Verizon mobile hotspot network but everytime i am getting 500 Internal server error.

It is working fine for other networks.

Can i get some help on this?

HOw to resolve such network issues?

Thanks

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