Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Video Conferencing - Cisco881w Polycom HDX 8000

I have just setup a Polycom HDX 8000 on our Cisco 881w for Video conferencing. The 881s WAN interface is connected to the ISP router and configured as a L3 interface. The Polycom is attached to a switchport (Fa1) and sits on a private VLAN. - 192.168.254.1 /24

There is a static NAT statement for the VC unit

There are no IP inspect statements or ACLs enabled on the VLAN or int Fa4

I can reach the router and the VC unit from the internet

When i place a call from the VC it connects but i dont get any Voice or video. I have tested with multiple sites and i get the same result. Doing some debugging i see that there are no UDP packets sourcing from the remote VCs IP. I do see packets being sourced from my Public and Private IPs.

Also when the Video conferencing unit is attached directly to the ISP router and configured with a Public IP it is able to make calls as expected.

Any thoughts ?

vlan20

ip address 192.168.254.1 255.255.255.0

ip nat inside

interface Vlan20

description VC_VLAN

ip address 192.168.254.1 255.255.255.0

ip nat inside

ip virtual-reassembly in

end

description EXTERNAL Time Warner 82.100.105.162

ip address 82.100.105.162 162 255.255.255.248

no ip redirects

no ip unreachables

no ip proxy-arp

ip flow ingress

ip nat outside

ip virtual-reassembly in

ip tcp adjust-mss 1300

duplex auto

speed auto

no cdp enable

ip nat inside source static 192.168.254.3 82.100.105.165

212
Views
0
Helpful
0
Replies
CreatePlease login to create content