Aastra 9143i Series Administrator's Manual page 193

Using Option 12 Hostname on the IP Phone
If you set the phone to use DHCP Option 12, the phone automatically sends this
option to the configuration server. This option specifies the hostname (name of the
client). The name may or may not be qualified with the local domain name (based
on RFC 2132). See RFC 1035 for character set restrictions.
An Administrator can change the "Hostname" for the DHCP Option 12 via the
configuration files, the IP Phone UI, and the Aastra Web UI.
Configuring DHCP Option 12 Hostname on the IP Phone
Use the following procedures to configure DHCP Option 12 Hostname on the IP
Phone.
Configuration Files
For specific parameters you can set in the configuration files, see Appendix A, the section,
Settings" on page A-13.
41-001160-03, Rev 00, Releaes 2.4
Configuring Network and Session Initiation Protocol (SIP) Features
Notes:
1. The hostname of [<model><MAC address>] automatically
populates the field on initial startup of the phone. For example, for a
6753i, the "Hostname" field is automatically populated as
"53i00085D164435", where the model number is "6753i" and the MAC
address is "00085D164435".
2. If the configuration server sends the hostname back to the phone in
a DHCP Reply Packet, the hostname is ignored.
Network Settings
"DHCP Option
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