ShoreTel IP100 Spezifikationen PDF herunterladen (Seite 249)

IP Phone Installation

Planning and Installation Guide 15 – 5

Step 6

To set the new range, click Save. You can set ranges for other sites in

the system by clicking Previous or Next.

NOTE If a phone is added with an address that is not within a

specified range for any site, or there are no IP address ranges

defined for any site, the telephone will be automatically

assigned to the headquarters site. This causes seven-digit

numbers dialed from the IP phone to be dialed as numbers

within the area code of the headquarters site. In addition, this

causes all telephone calls to users who are not at the

headquarters to use the configured inter-site voice encoding for

that system.

DHCP Settings

ShoreTel IP phones are preconfigured to use the network’s DHCP server for addressing

and time zone information. In addition to its address and standard network addresses,

the DHCP server’s response also provides the following:

• ShoreTel server address: The ShoreTel server’s address is used to access and

download the latest telephone application software and the configuration

information for the ShoreTel 6.1 system.

• SNTP server and time zone offset: The SNTP provides a standard network time to

maintain the telephone’s displayed time and date. The time zone offset indicates

the correct offset from GMT time to ensure that the time display matches the user’s

time zone.

ShoreTel Server Address

The ShoreTel server provides the IP phones with the latest application software and the

configuration information that enables the IP phone to be automatically added to the

ShoreTel 6.1 system. The ShoreTel server’s address must be provided to the phone as a

vendor-specific option. ShorePhone-IP100 phones are preconfigured to look for the

ShoreTel server’s address to be specified as Vendor Specific DHCP Option 155.

ShorePhone-IP210/212k/230/530/560/560g phones are preconfigured to look for the

ShoreTel server’s address to be specified as Vendor Specific DHCP Option 156. If these

options are not available, the ShoreTel IP phones will use Option 66.

For help on configuring these DHCP Options, see “Configuring DHCP for ShoreTel IP

Phones” on page 9-16.

SNTP Server

The DHCP server should be configured to provided the address of your network’s

SNTP server to provide date and time information to the IP phones.

GMT Offset

The DHCP server must provide the telephones with the appropriate Greenwich Mean

Time (GMT) offset to adjust the provided network time for the time zone of the

telephone’s location. When a single DHCP server is used for IP phones in multiple

sites, the DHCP server must be configured to provide the correct GMT offset for the

different sites based on the location or subnet where the telephone that issues the

DHCP request is located.

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