[cisco-voip] TP EX90 one way video only

[Erick Wellnitz]

IF it is using SIP, without some sort of firewall traversal or proxy the IP
in the SIP SDP will show your 192.168.0.50 address of the EX90 and not the
public routable address.

H323 does something similar with ip addressing higher up in the OSI layers
which causes issues with some firewalls/NAT devices.


On Mon, Jun 3, 2013 at 8:30 AM, Chris Ward (chrward) <chrward at cisco.com>wrote:

>  It’s most likely the NAT that is causing the issue. You may need to turn
> on SIP inspection on the router so that it tries to replace the internal IP
> with the external IP. Without the inspection, the other unit will be
> sending video to the internal IP which it can’t real.****
>
> ** **
>
> +Chris****
>
> Unity Connection TME****
>
> ** **
>
> *From:* cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] *On Behalf
> Of *sheref hf
> *Sent:* Sunday, June 02, 2013 4:27 AM
> *To:* cisco-voip at puck.nether.net
> *Subject:* [cisco-voip] TP EX90 one way video only****
>
> ** **
>
> Dear all****
>
> ** **
>
> I have TP EX90 with real IP address; I tried to make video call with
> another TP****
>
> but we face an issue; they can see me but I can't****
>
> ** **
>
> TP Ex90 ---> LAN ---->Router----> Internet <---- TP Ex90****
>
> ** **
>
> I configured static NAT on router ****
>
> //  ip nat inside source static 192.168.0.50 196.2XX.X.XXX****
>
> ** **
>
> Is there any additional configuration to solve this issue??****
>
>
>
> ****
>
> ** **
>
> Thanks****
>
> BR,
> Sherif Ibrahim Moahmed
> Network Engineer
> CCVP, CCNP****
>
> _______________________________________________
> cisco-voip mailing list
> cisco-voip at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
>
>
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