Cisco 7975G - Check DHCP Settings; Check TFTP Settings; Set up Remote Phone

Set Up Remote Phone
Cisco IP Phones that are configured for SSL VPN to ASA using the built-in client in a remote locaiont (for
example, a home office) have a special configuration requirement.
We recommend that you provide the phone with an Alternate TFTP server setting manually. This setting
allows the phone to download the configuration and other files from TFTP. The phone in a remote location
(home office) cannot correctly provide OPTION 150 to the phone using DHCP.
The IP phone can register to the last-known Cisco Unified Communications Manager, but any configuration
updates cannot applied until you configure the manual TFTP server address.
Procedure
Step 1
On the phone, select Applications.
Step 2
Navigate to the IPv4 Settings window.
Step 3
Scroll to the Alternate TFTP option and set the field to Yes.
Step 4
In the TFTP Server 1 field, set the TFTP server address.
Step 5
Save the changes.
Check TFTP Settings
Procedure
Step 1
You can determine the IP address of the TFTP server used by the phone by pressing the Settings button on
the phone, choosing Network Configuration > IPv4, and scrolling to the TFTP Server 1 option.
Step 2
If you have assigned a static IP address to the phone, you must manually enter a setting for the TFTP Server
1 option. See Network Configuration Menu, on page 66.
Step 3
If you are using DHCP, the phone obtains the address for the TFTP server from the DHCP server. Check the
IP address configured in Option 150.
Step 4
You can also enable the phone to use an alternate TFTP server. Such a setting is particularly useful if the
phone was recently moved from one location to another. See Network Configuration Menu, on page 66 for
instructions.
Check DHCP settings
Procedure
Step 1
On the Cisco Unified IP Phone, press the Settings button, choose Network Configuration, and look at the
following options:
Cisco Unified IP Phone 7975G, 7971G-GE, 7970G, 7965G, and 7945G Administration Guide for Cisco Unified
Communications Manager 9.0 (SCCP and SIP)
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Troubleshooting and Maintenance
Troubleshooting Procedures