From Inside and out side i have given permt ip any.

We are using ASA firwall

When i dial tcp session builts for outside and tears down due to sync time out.Even when i telnet the port 1720 from inside i am getting the same problem.

I disabled the h.323 inspection also.

From outside to inside(my vendor) is able dial my VC.

Have you seen this guide on how to allow H.323 traffic through a firewall? This may prove useful.

http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a008081042c.shtml#h323

Hi

Please let us know what Firewall version you are using ? Initiate the traffic and see the syslogs if you are getting anything which says like :

"IP Options : Router Alert ". If yes , then "ip-options" parameter needs to be disabled which can be accomplished by upgrading to 8.2.2 (and some versions of 8.2.1) From 8.2.2  release and above " ip-options" can be tweaked via the option "inspect ip-options" under which you can set the router-alert as "allow" .

The other option for above is to tell the vendor of Polycom application to disable the "ip-option" parameter from their end so as to allow the packet to pass-thru the ASA .

If you are not getting the above error of ip-option , then as you have disabled H323 Inspection ; ensure your vendor too have disabled the option of " NAT is H.323" Option disabled in the application

Hi

I mean the option of "NAT is H.323 compatible " to be disabled in the Polycom application in my last line