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Table 4-5
Telephones have additional, optional administration. See
4630SW IP Telephone, on page 4-33
page
4-39, below, for more information.
DNS Addressing
As of Release 1.5, the 4600 IP Telephones support DNS addresses as well as dotted decimal
addresses. The telephone attempts to resolve a non-ASCII-encoded dotted decimal IP address by
checking the contents of DHCP Option 6, as indicated in
least one address in Option 6 must be a valid non-zero dotted decimal address - otherwise, DNS
will fail. The text string in the system parameter DOMAIN (Option 15, see
to the address(es) in Option 6 before the telephone attempts to resolve the DNS address. If Option
6 contains a list of DNS addresses, they are queried in the order given if no response is received
from previous addresses on the list. As an alternative to administering DNS via DHCP, you may
specify the DNS server and/or Domain name in the TFTP script file (in which case, you should
SET the values for DNSSRVR and DOMAIN first; then you may use those names later in the
script).
If Options 6 and 15 are appropriately administered with DNS servers and Domain names
respectively, MCIPADD and TFTPSRVR settings need not be specified in the Site
Specific Option string.
Customizing the Site-Specific Option Number
(SSON)
As discussed in
DHCP Generic Setup, on page
Series IP Telephones, can be set to a string. For each system parameter listed in
you want to include, append the following to the SSON string:
a comma followed by name=value
where name is a parameter name and value is its associated value. Invalid values will cause the
data to be ignored for that name. Customizing the SSON will affect all telephones associated with
that DHCP server.
applies to all 4600 Series IP Telephones. The 4630/4630SW and 4620 IP
Administering Options for the 4600 Series IP Telephones
Customizing the 4630/
and
Customizing the 4620 IP Telephone, on
4
DHCP Generic Setup, on page
4
4-7, the SSON, defined to be 176 for the 4600
Server Administration
4-7. At
Table
4-5) is appended
Table 4-5
that
4-31
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