Cisco SIP IP Phone Administrator's Manual page 66

Modifying the Phone's SIP Settings
Table 3-3 Default SIP Configuration File Parameters (continued)
Parameter
dyn_dns_addr_1
dyn_dns_addr_2
dyn_tftp_addr
enable_vad
end_media_port
http_proxy_addr
http_proxy_port
Cisco SIP IP Phone Administrator Guide
3-14
Required or
Optional Description
Optional You can specify the IP address of a new dynamic DNS
server. If a new DNS server is specified, it is used for any
further DNS requests after the phone uses the initial DNS
address upon bootup. The DNS addresses are used in the
following order:
dyn_dns_addr_1 (If present)
1.
dyn_dns_add_2 (If present)
2.
3. DNS Server 1
4. DNS Server 2
5. DNS Server 3
6. DNS Server 4
7. DNS Server 5
The dynamic DNS address is not stored in Flash memory.
Only dotted IP addresses are accepted. This value can be
cleared by removing it from the config file or changing
its value to a null value "" "" or "UNPROVISIONED".
Optional You can specify a second dynamic DNS server to be used
for DNS requests.
Optional You can specify the IP address of a new dynamic TFTP
server. After initially querying the default TFTP server,
the phone will re-request the default and MAC-specific
configuration files from the new TFTP server. The
dynamic TFTP server is not stored in Flash memory. The
number of dyn_tftp_addr values supported by the phone
is limited to prevent the phone from bouncing between
two TFTP servers. Only dotted IP addresses are
accepted. This value can be cleared by removing it from
the config file or changing its value to a null value "" ""
or "UNPROVISIONED".
Optional Use 0 to disable VAD and 1 to enable VAD. Default is 0.
Optional The end Real-Time Transport Protocol (RTP) range for
media. Default is 32,766. Valid values are 16,384 to
32,766.
Optional The IP address of the HTTP proxy server. You can use
either a dotted IP address or a DNS name (a record only).
Optional The port number of the HTTP proxy port. The default is
80.
Chapter 3 Managing Cisco SIP IP Phones