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27
Cisco IP Video Phone E20
Administrator guide
D14330.12
Administrator guide Cisco IP Video Phone E20, TE4.1 November 2011.
All contents are Copyright © 2010–2011, Cisco Systems, Inc. All rights reserved.
IEEE8021x
IEEE8021x
Allows you to set up IEEE 802.1x authentication for the E20.
The 802.1x feature is by default turned off.
Assignment
can be
DHCP
or
Static
MTU
sets the maximum transmission unit size in bytes.
Network services
PresenceSubscribe
When turned
Off
the device will not send presence subcriptions and
presence information will not be shown in your home menu.
Telnet
Telnet is a network protocol used on the Internet or local area network
(LAN) connections.
Select
On
to enable the Telnet protocol and
Off
to disable. This is the
default factory setting.
HTTP / HTTPS / HTTP test certificate
Determines whether or not to use secure management.
HTTP
: Set to
HTTP
to disable secure management. Requires
HTTP
to
be enabled in the
Network Services HTTP Mode
setting.
HTTPS
: Set to
HTTPS
to enable secure management. Requires
HTTPS
to be enabled in the
Network Services HTTPS Mode
setting.
HTTPS test certificate
: Set to
On
or
Off
.
SNMP (Simple Network Management Protocol)
Used in network management systems to monitor network-attached devices
(routers, servers, switches, projectors, etc) for conditions that warrant
administrative attention. SNMP exposes management data in the form of
variables on the managed systems, which describe the system configuration.
These variables can then be queried (set to
ReadOnly
) and sometimes set (set
to
ReadWrite
) by managing applications.
Mode
: Set to
Off
when you want to disable the SNMP network service.
ReadOnly
: Set to
ReadOnly
when you want to enable the SNMP
network service for queries only.
ReadWrite
: Set to
ReadWrite
when you want to enable the SNMP
network service for both queries and commands.
Community name
: Enter the name of the Network Services SNMP
Community. SNMP Community names are used to authenticate SNMP
requests. SNMP requests must have a ‘password’ (case sensitive)
in order to receive a response from the SNMP Agent in the codec.
The default password is “public”. If you have the Cisco TelePresence
Management Suite (TMS) you must make sure the same SNMP
Community is configured there too.
Note!
The SNMP Community
password is case sensitive.
System contact
: Enter the name of the Network Services SNMP
System Contact.
System location
: Enter the name of the Network Services SNMP
System Location.
Host IP 1–3
: Enter the IP address of the SNMP Manager. All traps will
then be sent to the host listed.
The system’s SNMP Agent responds to requests from SNMP Managers
(a PC program etc.). SNMP Traps are generated by the SNMP Agent to
inform the SNMP Manager about important events. Can be used to send
event created messages to the SNMP agent about different events like:
system reboot, system dialing, system disconnecting, MCU call, packet
loss etc. Traps can be sent to multiple SNMP Trap Hosts.
SIP
Determines whether the system should be able to place and receive SIP calls.
On
: Set to On to enable the possibility to place and receive SIP calls.
This is the default setting.
Off
: Set to Off to disable the possibility to place and receive SIP calls.
NTP (Network Time Protocol)
The Network Time Protocol (NTP) is used to synchronize the time of the system
with a reference time server. The time server will subsequently be queried
every 24th hour for time updates. The time will be displayed on the top of the
screen. The system will use the time to timestamp messages transmitted to
Gatekeepers or Border Controllers requiring H.235 authentication. The system
will use the time to timestamp messages transmitted to Gatekeepers or Border
Controllers that requires H.235 authentication. It is also used for timestamping
Placed Calls, Missed Calls and Received Calls.
Auto
: The system will use the NTP server, by which address is supplied
from the DHCP server in the network. If no DHCP server is used, or the
DHCP server does not provide the system with a NTP server address,
the system will use the static defined NTP server address specified by
the user.
