The Network Settings - Cisco TelePresence System C20 Administrator's Manual

Cisco TelePresence System Quick Set C20 / C20 Plus and Profiles using C20
Contents Introduction
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/Static>
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
D14637.06 Profile C20 and Quick Set C20 Administrator Guide TC4.2, July 2011.
Copyright © 2010-2011 Cisco Systems, Inc. All rights reserved.
Web interface Advanced settings Advanced settings

The Network settings

Network [1..1] Assignment
Define whether to use DHCP or Static IPv4 assignment.
Requires user role: ADMIN
Value space: <Static/DHCP>
Example: Network 1 Assignment: DHCP
Network [1..1] DNS Domain Name
DNS Domain Name is the default domain name suffix which is added to unqualified names.
Example: If the DNS Domain Name is "company.com" and the name to lookup is
"MyVideoSystem" , this will result in the DNS lookup "MyVideoSystem.company.com" .
Requires user role: ADMIN
Value space: <S: 0, 64>
Example: Network 1 DNS Domain Name: ""
Network [1..1] DNS Server [1..5] Address
Define the network addresses for DNS servers. Up to 5 addresses may be specified. If the network
addresses are unknown, contact your administrator or Internet Service Provider.
Requires user role: ADMIN
Value space: <S: 0, 64>
Example: Network 1 DNS Server 1 Address: ""
Network [1..1] IPStack
Select which internet protocols the system will support.
Requires user role: ADMIN
Value space: <IPv4/IPv6>
Example: Network 1 IPStack: IPv4
40
Password protection
Static: Set the network assignment to Static and configure the static IPv4 settings (IP Address,
SubnetMask and Gateway).
DHCP: The system addresses are automatically assigned by the DHCP server.
Format: String with a maximum of 64 characters.
Format: String with a maximum of 64 characters.
IPv4: IP version 4 is supported.
IPv6: IP version 6 is supported. The IPv4 settings (IP Address, IP Subnet Mask and Gateway)
will be disabled.
Administrator guide
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