[cisco-voip] TP EX90 one way video only

[Erick Wellnitz]

If you are using NAT for the Expressway (opposed to giving it a public
address which could be a security issue) it is required to purchase the
dual nic option.



On Mon, Jun 3, 2013 at 10:52 AM, Gregory Wenzel <gwenzel at conres.com> wrote:

>  I have been watching these emails fly by and don’t quite understand. I
> recently finished a project where we sold the client Cisco TMS, Cisco VCS
> and Cisco Expressway, but we had to purchase the dual-nic option to provide
> the dual nic to provide the traversal to non-traversal calls.****
>
> ** **
>
> *From:* cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] *On Behalf
> Of *Erick Wellnitz
> *Sent:* Monday, June 03, 2013 11:44 AM
> *To:* Chris Ward (chrward)
> *Cc:* sheref hf; cisco-voip at puck.nether.net
> *Subject:* Re: [cisco-voip] TP EX90 one way video only****
>
> ** **
>
> 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****
>
>  ** **
>
> This message w/attachments (message) is solely for the use of the intended
> recipient(s) and may contain information that is privileged, confidential
> or proprietary. If you are not an intended recipient, please notify the
> sender, and then please delete and destroy all copies and attachments, and
> be advised that any review or dissemination of, or the taking of any action
> in reliance on, the information contained in or attached to this message is
> prohibited. Unless specifically indicated, this message is not an offer to
> sell or a solicitation of any products.   ­­
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/cisco-voip/attachments/20130603/15da0ce1/attachment.html>