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Linksys SPA9x2 Phone Administration Guide 42
Setting Internet, IP and PPPoE Information
Setting System Features
Setting Internet, IP and PPPoE Information
DHCP and PPPoE Notes
• DHCP Renewal on Timeout: SPA9x2 phones typically operate in a network where a DHCP
server assigns the device its IP address. Because IP addresses are a limited resource, the
DHCP server periodically renews the device lease on the IP address. If a phone loses its
IP address for any reason, or if some other device on the network is assigned its IP
address, the communication between the SIP proxy and the phone is either severed or
degraded.
Whenever an expected SIP response is not received within a programmable amount of
time after the corresponding SIP command is sent, the DHCP Timeout on Renewal
feature causes the device to request a renewal of its IP address. If the DHCP server
returns the IP address that it originally assigned to the phone, the DHCP assignment is
presumed to be operating correctly. Otherwise, the phone resets to try to fix the issue.
• PPPoE settings: Point-to-Point Protocol over Ethernet (PPPoE) relies on two widely
accepted standards: PPP and Ethernet. PPPoE is a specification for connecting users on
an Ethernet to the Internet through a common broadband medium, such as a single
DSL line, wireless device, or cable modem. All users on an Ethernet share a common
connection, so the Ethernet principles supporting multiple users in a LAN combine with
the principles of PPP, which apply to serial connections.
Setting a Static IP Address on the IP Phone
As with many system and phone settings, you can use the phone softkeys as an alternative to
the web GUI:
1. On the SPA9x2, press the Setup button.
2. Press 9 or scroll to 9 Network using the Navigation button.
3. With 1 WAN Connection Type highlighted, press the Edit soft button.
4. Press the Option soft button until Static IP displays. Press OK.
5. Scroll to Non-DHCP IP Address. Press Edit, then enter the static IP address of the phone using
the asterisk (*) in place of periods. For example, the IP address 192.168.1.100 would be
entered as 192*168*1*100. Press OK.