DBC 422
AND
DBC 425
23
1531-DBC 422 02 Uen B3 2013-12-02
•
Use the telephony domain name received in the vendor specific
field in the DHCP messages, 7.11.2 Data from DHCP on page 30.
•
Subnet method, 7.8.3 Subnet method on page 23
•
Set the IP address of the SW server manually in the phone. In this
case there must be one SW server per configuration file.
For all the methods, the corresponding directory names have to be
created in the software server and the corresponding configuration files
have to be stored under these directories.
7.8.1 DNS
domain
name
The DNS domain name, provided in option 15 in DHCP, is used to create
the URI (universal resource identifier) to fetch the configuration file from
the software server.
Example: /dns_domain_name/dbc42x02/d42x02-config.txt, see 7.9.3
Directory structure on page 25.
7.8.2 Telephony
domain
name
If the DNS domain name cannot be used, it is possible to create tele-
phony domain names and these are sent as a tag in option 43 in DHCP.
If the IP phone finds this tag, it will create the URI containing this domain
name and fetch the configuration file from the software server. Example:
/telephony_domain_name/dbc42x02/d42x02-config.txt, see 7.9.3 Direc-
tory structure on page 25.
7.8.3 Subnet
method
The URI consists of the network address together with the subnet mask
length. The network address consists of the IP address of the phone with
a logical AND operation of the subnet mask.
Example: The phone has the IP address 130.100.26.144 and the subnet
mask is 255.255.255.192. The AND operation gives the URI
/130.100.26.128-26/dbc42x02/d42x02-config.txt. The component -26 is
the length of the subnet mask (number of ones in the binary value of the
subnet mask), see 7.9.3 Directory structure on page 25.
7.8.4
Priority between the different methods
The priority is:
•
The telephony domain tag in option 43
•
The DNS domain in option 15
