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Video Ports

Leonardo Santana
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Hello,

I installed an SX20 connected on the internet link an its working, now we wanna put the SX20 inside the voice network and register with CUCM to make video conference call with the IP Phones 9951 and with internet contacts.

What are the logical ports that i need to open on the firewall?

Regards

Leonardo Santana

Regards
Leonardo Santana

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aostense
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Level 1

Hi Leonardo,

The default ports are identified in the administrator guide, but you could also configure your own set of ports for the different protocols, e.g. H323:

H323 Profile [1..1] PortAllocation

The H.323 Port Allocation setting affects the H.245 port numbers used for H.323 call signalling.

Requires user role: ADMIN

Value space:

Dynamic: The system will allocate which ports to use when opening a TCP connection. The

reason for doing this is to avoid using the same ports for subsequent calls, as some firewalls

consider this as a sign of attack. When Dynamic is selected, the H.323 ports used are from

11000 to 20999. Once 20999 is reached they restart again at 11000. For RTP and RTCP

media data, the system is using UDP ports in the range 2326 to 2487. Each media channel

is using two adjacent ports, ie 2330 and 2331 for RTP and RTCP respectively. The ports are

automatically selected by the system within the given range. Firewall administrators should not

try to deduce which ports are used when, as the allocation schema within the mentioned range

may change without any further notice.

Static: When set to Static the ports are given within a static predefined range [5555-6555].

Example: H323 Profile 1 PortAllocation: Dynamic

More information can be found here:

http://www.cisco.com/en/US/partner/products/ps11424/tsd_products_support_series_home.html#keyword=admin&concept=Cisco%20TelePresence%20Quick%20Set%20Series&country=US&language=en

Hope this helps,

Arne