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304 APPENDIX A: CONFIGURING OPTION 184 ON A WINDOWS 2000 DHCP SERVER
Completing the
Configuration
After you have entered all elements in the new value, click OK. You return
to the Predefined Options and Values dialog box. The values that you
entered appear in the Value area of the dialog box under Byte.
The values appear in hexadecimal format although you entered them in
decimal format.
To accept the values, click OK. You return to the DHCP Microsoft
Management Console dialog box.
10 The length of the argument that applies to suboption 4 is
determined by two elements:
IP Address: The IP address of the device that is to be
contacted if the VCX server cannot be reached. This requires
4 bytes, one for each octet in the IP address.
Dial String: The number pattern that determines which calls
can be connected to the fail-over device. Limit: 254
characters
The format in which you enter the digits of the dial string is:
■ 0 through 9: – Enter 00 through 09
■ Wildcard: – Enter 0xAA which is the hexadecimal value
for the asterisk (*) character.
Note: The asterisk character must be the last character in
the dial string.
Note: You can configure only one dial string in suboption 4.
Example: The IP address is 192.168.15.254 and the fail-over
dial string is 91*. This allows calls to be made to any number
that begins with the digits 91.
In this example, you enter 10 as the length of the argument
(4 bytes for the IP address and 2 bytes for each of the three
dial string digits).
192 The first octet in the IP address
168 The second octet in the IP address
15 The third octet in the IP address
254 The fourth octet in the IP address
09 The first digit in the fail-over dial string (9)
01 The second digit in the fail-over dial string (1)
0xAA The wildcard (asterisk) character, entered in hexadecimal
format.
Table 15 Configuring the Fail-Over Call Route Point (continued)
What You Type Description