Copyright 2010-2017 Obihai Technology, Inc.
42
Locally Configured DNS Lookup Table
You may define up to 30 local DNS records in the phone configuration such that the phone will search through these 30
records first before hitting the external DNS services when attempting to resolve a domain name. These records can be
A or SRV records. This feature is particularly useful when you want to enable proxy redundancy without using any DNS
servers. Note that the only way to provide a list of redundant servers to the phone is through the use DNS A or DNS SRV
records.
NTP Servers and Local Time
The phone keeps track of current time by querying NTP servers (using SNTP). Up to 2 NTP servers may be configured
using the
NTPServer1
and
NTPServer2
parameters. The local time is determined for the local time zone that is set
in the
LocalTimeZone
parameter. The phone queries the NTP servers once per hour to update the current time,
which is interpolated by the phone using its own local clock in-between NTP refreshes.
Daylight saving time can be enabled by enabling the option
DaylightSavingTimeEnable
. Daylight saving time is
automatically adjusted based on the start and end rules specified in
DaylightSavingTimeStart
and
DaylightSavingTimeEnd
parameters. The amount of time to adjust when daylight saving time is in effect can be
configured in the
DaylightSavingTimeDiff
parameter.
There is another mechanism that can be used by the phone to tell time and it is based on SIP signaling. When the
phone renews registration with a SIP proxy server, the server may include a Date header in the response to the phone
that indicates the current GMT time. The phone will process this time value the way it does with the result from the
NTP servers, if
ITSP Profile X
–
SIP
::
X_ProcessDateHeader
is enabled.
802.1X Authentication
OBiPhone supports the following 802.1X Authentication Modes:
•
Disable
•
MD5
•
TLS
•
TTLS/MSCHAPv2
•
PEAP-MSCHAPv2
Authentication Mode is set using the parameter
WAN Settings
–
Internet Settings
::
802_1XMode
. Depending
on the selected mode, additional authentication parameters may be required according to the following table.
Parameter
Description
(EAP)
MD5
(EAP)
TLS (1.0)
TTLS/
MSCHAPv2
PEAP-
MSCHAPv2
802_1XIdentity
A username. If the value is not
needed, it should be set to an
empty string
Required
Required
Required
802_1XPassword
A password or passphrase. If
password/passphrase is not
needed, this value should be set
to an empty string
Required
Required
Required
802_1XCACertificate
Internal path where the
certificate of the CA that signs
the server certificate (for 802.1x
authentication) is stored
Required
Required
802_1XClientCertificate
Internal path where the client
certificate (for 802.1x
authentication) is stored
Required
