Installation guide

Time Services Network Requirements and Preparation
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ShoreTel 14.2 Planning and Installation Guide 59
3. Click Add.
4. Set Name to IP Phone Boot Server.
5. Set Data Type to String.
6. Set Code to 156 and add a description, if desired.
7. Navigate to the scope options and add option 156.
8. Set the value of option 156 as follows:
ftpservers=ip_address, layer2tagging=n, vlanid=x
Where
 ip_address is the IP address of the ShoreTel Headquarters server.
 n in layer2tagging=n is 0 (to disable 802.1Q) or 1 (to enable 802.1Q). The default is 0.
 x in vlanid=x corresponds to a VLAN ID number between 0 and 4094 when 802.1Q is
enabled. The default is 0.
For example, the following would enable VLAN tagging using a VLAN ID of 10:
FtpServers=192.168.0.13, Layer2Tagging=1, vlanid=10
Time Services
For ShoreTel IP phones, time services must be available to provide the telephone’s date and time
display. This requires a server that supports Simple Network Time Protocol (SNTP).
If an organization does not have an NTP server, it can use a publicly accessible time server. For
information about publicly accessible time servers, see http://support.ntp.org/bin/view/Servers/
WebHome.
ShoreTel 100-, 200-, 500-, and 600-Series IP phones receive SNTP server information from the DHCP
server.
ShoreTel 400-Series IP phones depend on a Network Time Protocol (NTP) server to authenticate a
secure connection and to provide the date and time to be displayed on for the phone’s screen. The
time displayed on the phone is the GMT value provided by the NTP server plus the offset from the time
zone setting of the phone. On the ShoreTel IP480, IP480g, and IP485g phone models, users can
change the time zone from the default value through the Options menu on the phone.
Virtual Private Network (VPN)
Internet Protocol Virtual Private Networks (IP VPNs) are often the secure access of choice. IP VPNs
establish secure communications between employees, branches, or partners by using strong IP-based
encryption and authentication techniques for transport security over the public Internet.