Polycom SpectraLink 1725-36038-001 Administration Manual page 66

SpectraLink 8020/8030 Wireless Telephone: Administration Guide for SIP
66
Will use Dynamic Host Configuration Protocol to assign
* Use DHCP
an IP Address each time the handset is turned on. If DHCP is enabled,
the handset also receives all other IP Address configurations from the
DHCP server. If a needed parameter is not supplied by DHCP and
there is a static value, the static value will be used.
Allows you to manually set a fixed IP Address. If selected, the
Static IP
handset will prompt for the IP addresses for each configurable
network component. When entering addresses, enter the digits only,
including leading zeroes. No periods are required.
Regardless of the mode in which the handset is operating, the
following components are required and must be configured as part of
the SIP system:
The IP address of the handset. This is automatically
Phone IP
assigned if DHCP is used. If using Static IP configuration, you
must obtain a unique IP address for each handset from your
network administrator.
Default Gateway and Subnet Mask
using a complex network, which includes routers. Both of these
must be configured either with an IP address under Static IP (not
set to 000.000.000.000 or 255.255.255.255) or with DHCP for the
handset to contact any network components on a different subnet.
If configured on the DHCP server, use option 3 for the Default
Gateway and option 1 for the Subnet Mask. Contact the network
administrator for the proper settings for the network.
SpectraLink 8020/8030 Wireless Telephones cannot roam with
uninterrupted service between subnets unless specific LAN
components are present. Certain AP/Ethernet switch combinations
establish a Layer-2 tunnel across subnets that enable the handsets
to roam. Without this capability, any call in progress will be dropped
when the user moves out of range and the handset must be power
cycled in order to resume functionality in the new subnet area.
Ensure that all your APs are attached to the same subnet for proper
operation. The handset can change subnets if DHCP is enabled and
the handset is powered off then back on when within range of APs
on the new subnet. Note that the wireless telephones cannot "roam"
across subnets, since they cannot change IP addresses while
operational.
Please see Best Practices for Deploying Enterprise-Grade Wi-Fi
Telephony for detailed configuration information.
The provisioning server holds software images
Provisioning Servers
for updating the handsets and contains the handset configuration
Used to identify subnets, when
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