Adding A 242 Option - Avaya 1600 Series Installation Manual

5.4 Adding a 242 Option

In addition to issuing IP address information, DHCP servers can issue other information in response to requests for
different specific DHCP option numbers. The settings for each option are attached to the scope. 1600 and 9600 Series
H.323 IP phones use SSON 242 to request additional information from a DHCP server. The option should include defining
the address of the phone's H.323 gatekeeper (the IP Office) and the address of the HTTP file server.
To add a 242 option:
1. Right-click on the DHCP server.
2. From the pop-up menu, select Predefined options.
3. Select Add.
4. Enter the following information:
·
Name: 16xxOptions
·
Data type: String
·
Code: 242
·
Description: IP Phone settings
5. Click OK.
6. In the string value field, enter the following:
MCIPADD=xxx.xxx.xxx.xxx,MCPORT=1719,HTTPSRVR=yyy.yyy.yyy.yyy,HTTPDIR=z, VLANTEST=0
where:
·
MCIPADD= the H.323 Gatekeeper (Callserver) address. Normally, this is the IP Office Unit's LAN1 address.
You can enter several IP addresses, separating each by a comma with no space. This allows specification of a
fallback H.323 gatekeeper.
Note: The phones will wait three (3) minutes before switching to the fallback and will not switch back when
the first server recovers, until the phone is rebooted.
·
MCPORT= the RAS port address for initiating phone registration. The default is 1719.
·
HTTPSRVR= the HTTP file server IP address.
·
HTTPDIR= the HTTP file directory where the IP phone files are located. This entry is not required if those files
are in the server's root directory.
·
The maximum string length is 127 characters. To reduce the length, the TFTP Server address can be specified
through attaching an Option 66 entry to the Scope. See
7. Click OK.
8. Expand the server by clicking on the [+] next to it.
9. Click on the scope you just created for the 1600 and 9600 phones.
10. In the right-hand panel, right-click on the scope and select Scope Options.
11. In the general tab, make sure 242 is checked.
12. Verify the String value is correct and click OK.
Having created a 242 option and associated with the scope we want used by the IP phones, we now need to
the scope .
82
H323 Telephone Installation
IP Office™ Platform 11.0
Comments on this document? infodev@avaya.com
Alternate DHCP Server Setup: Creating a Scope
Alternate Options 79 .
Issue 23e (Friday, February 15, 2019)
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