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Chapter 45 Cisco IP Phone Configuration
Configuring Cisco IPPhones
45-14
Cisco CallManager Administration Guide
OL-5378-01
Table 45-1 Phone Configuration Settings
Field Description
Device Information
MAC Address Enter the Media Access Control (MAC) address that
identifies Cisco IP Phones (hardware phones only).
Make sure that the value comprises 12 hexadecimal
characters.
See the “Displaying the MAC Address of a Phone”
section on page 45-3 for information on how to access
the MAC address.
Cisco VG248 Analog Phone Gateway
The MAC address for the Cisco VG248 gateway
specifies the endpoint from the Gateway Configuration
window of Cisco CallManager Administration. See the
“Gateway Configuration” section on page 44-1 for
configuration information.
Only one MAC address exists for the Cisco VG248
Analog Phone Gateway. All 48 ports share the same
MAC address. Cisco CallManager requires unique MAC
addresses for all devices.
Cisco CallManager converts the MAC Address for each
device by
• Dropping the first two digits of the MAC Address
• Shifting the MAC address two places to the left
• Adding the two-digit port number to the end of the
MAC address (to the right of the number)
EXAMPLE
MAC Address for the Cisco VG248 is
000039A44218
the MAC address for registered port 12 in the
Cisco CallManager is
0039A4421812