ShoreTel | 110 | ShoreTel 14.2 Planning and Installation Guide

Configuring DHCP for ShoreTel IP Phones
Network Requirements and Preparation
Configuring DHCP for ShoreTel IP Phones
The ShoreTel server provides the latest application software and configuration information to ShoreTel
IP phones. To receive this information, the ShoreTel IP phone must have the server’s IP address. The
configuration task in this section is for specifying the IP address and other necessary information.
Note
For information about DHCP settings for the ShoreTel 400-Series IP phones, see the ShoreTel
Maintenance Guide.
The phone receives the necessary information through a vendor-specific DHCP option. ShoreTel IP
phones have a built-in configuration to seek the ShoreTel server’s address as Vendor Specific DHCP
option 156. If these options are not available, ShoreTel’s IP phones use option 66. ShoreTel IP phones
that support DHCP option 156 are ShoreTel models IP110, IP115, IP212k, IP230, IP230g, IP265,
IP420, IP480, IP480g, IP485g, IP560, IP560g, and IP655.
Note
The ShoreTel IP Phone 8000 does not support option 156 for this application.
The configuration task in this section involves a number for the country of the network or subnet where
the phones reside. If necessary, find the number for a country in Table 17.
If your network has separate subnets, be sure to select the correct subnet. For example, if a multinational organization needs the DHCP server to deliver Spanish tones and cadences to the IP phones
in an office in Spain, specify the subnet for that office. Without this specification, all phones that boot
from this DHCP server receive Spanish tones and cadences.
Another value for the configuration task is a number that points to a language by its country. Although
this number refers to a language, it is bound to a country, not a language. For this reason, some
countries with different languages have the same language number in the configuration of DHCP
option 156. Table 18 lists the language numbers. (As Table 18 shows, language number 4 is a good
example.) Selecting the correct language code ensures that the phone shows text in the desired
language. Examples of this text are abbreviations for days and months and messages indicating that a
requested service is unavailable.
Note
ShoreTel 400-Series IP phones do not use the language or country parameters in DHCP Option 156.
Instead, these phones obtain country and language settings from ShoreTel Director as follows:
„
The country is determined by the Country parameter on the Sites – Edit Site page.
„
For an Available phone, the language is determined by the Language parameter on the Sites – Edit
Site page. For an assigned phone, the language is determined by the Language parameter on the
Users – Edit User page.
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Network Requirements and Preparation
Configuring DHCP for ShoreTel IP Phones
To configure DHCP Option 156 on a Microsoft DHCP Server for ShoreTel IP110, IP115, IP212k, IP230,
IP230g, IP265, IP560, IP560g, and IP655 phone models:
1. Open DHCP Manager on the Microsoft DHCP server.
2. Right-click the DHCP server, and then select Set pre-defined options.
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. Type the values for option 156 with the following syntax:
ftpservers=ip_address, country=n, language=n, layer2tagging=n, vlanid=n
Where
„
ip_address is the IP address of the ShoreTel Headquarters server.
„
n in country=n corresponds to the country number in Table 17.
„
n in language=n corresponds to the language number in Table 18.
Table 17: Country Numbers for DHCP Option 156
56
Number
Country
1
United States of America
2
Canada
3
France
4
Italy
5
Germany
6
Spain
7
United Kingdom
8
Australia
9
Hong Kong
10
Malaysia
11
Singapore
12
Brazil
13
Netherlands
14
New Zealand
15
Portugal
16
Ireland
Planning and Installation Guide
ShoreTel 14.2
Configuring DHCP for ShoreTel IP Phones
Network Requirements and Preparation
Table 17: Country Numbers for DHCP Option 156 (Continued)
Number
Country
17
Belgium
18
Mexico
19
Denmark
20
Sweden
21
Switzerland
22
Austria
23
India
24
China
25
Norway
26
United Arab Emirates
28
Japan
29
Taiwan
30
South Korea
31
Luxembourg
32
Finland
33
Philippines
34
Thailand
35
Poland
36
Czech Republic
37
South Africa
38
Costa Rica
39
Greece
41
Monaco (France)
42
Israel
44
Indonesia
46
Hungary
48
Fiji
49
Mongolia
Table 18: Language Numbers by Country for DHCP Option 156
ShoreTel 14.2
Number
Language (Country)
1
U.S., Canada, Mongolia, Philippines, Thailand
2
Spain (CALA)
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Network Requirements and Preparation
Configuring Automatic VLAN Assignment through DHCP
Table 18: Language Numbers by Country for DHCP Option 156 (Continued)
Number
Language (Country)
3
Germany, Austria
4
English (UK), Czech Republic, Ireland, Malaysia, Greece, Hong Kong, New
Zealand, Poland, India, Romania, Singapore, South Africa, United Arab
Emirates, Indonesia, Finland
5
France (Parisian), Belgium, Luxembourg, Switzerland, Monaco (France)
6
Netherlands
7
Mexico, Cost Rica, Chile
8
Denmark
9
Italy
10
Sweden
11
China
12
Norway, Finland
13
Brazil (Portuguese)
14
Japan
15
South Korea
17
Taiwan (Mandarin)
18
Portugal
22
Bulgaria
23
Australia, Fiji
Configuring Automatic VLAN Assignment through
DHCP
You can configure an IP phone to automatically determine its VLAN ID through DHCP. When the
phone boots for the first time, it acquires an IP address via DHCP similar to any other network device.
However, the DHCP response also specifies (using a proprietary DHCP option) the VLAN ID for the
phone to use. The phone then releases the IP address originally assigned to it and reboots. After the
phone reboots, all packets are tagged with the VLAN ID specified in the original DHCP response.
The Automatic VLAN Assignment feature is configured on the DHCP server rather than through
ShoreTel Director.
To configure automatic VLAN assignment on a Microsoft DHCP server:
1. Open DHCP Manager on your Microsoft DHCP server.
2. Right-click the DHCP server and select Set pre-defined options.
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Planning and Installation Guide
ShoreTel 14.2
Time Services
Network Requirements and Preparation
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.
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