Cisco SPA525G Administration Guide - Page 129

Configuring Security, Quality, and Network Features Configuring Domain and Internet Settings 6 STEP 4 Configure the Internet Connection Type. Choose one of the following: • Dynamic Host Configuration Protocol (DHCP): Configure the phone to receive an IP address from the network DHCP. Cisco IP 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. • Static IP-Configure a static IP address for the phone. • PPPoE-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. NOTE: PPPoE is not applicable to WIP310. STEP 5 Click Submit All Changes. Setting a Static IP Address If you configured Static IP as the internet connection type: STEP 1 Log in to the web administration interface. STEP 2 Click Admin Login and advanced. Cisco SPA and Wireless IP Phone Administration Guide 127