Avaya IP Office 4.2 - Manual (Page 68)

IP Phone Installation Page 68
15-601046 Issue 14a (23 June 2008) IP Office 4.2
6. In the string value field, enter the following:
MCIPADD=xxx.xxx.xxx.xxx,MCPORT=1719,TFTPSRVR=yyy.yyy.yyy.yyy,TFTPDIR=z, VLANTEST=0
where:
· MCIPADD=xx.xxx.xxx.xxx is the H323 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 H323 gatekeeper.
· Note: The phones will wait 3 minutes before switching to the fallback and will not switch back when the
first server recovers, until the phone is rebooted.
· MCPORT=1719 is the RAS port address for initiating phone registration.
· TFTPSRVR=yyy.yyy.yyy.yyy is the TFTP Server IP Address. Normally, this is the IP address of the PC running
Manager.
· TFTPDIR=z is the TFTP Server directory where the IP phone files are located. This entry is not required if
those files are in the TFTP server's default directory.
· VLANTEST=w is the number of minutes phones should attempt to register on a specific VLAN before defaulting
back to VLAN 0. This field is optional. A setting of 0 disables the fallback to registering on VLAN 0.
· 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
Alternate Options .
7. Click OK.
8. Expand the server by clicking on the [+] next to it.
9. Click on the scope you just created for the 4600 phones.
10.In the right-hand panel, right-click on the scope and select Scope Options.
11.In the general tab, make sure 176 is checked.
12.Verify the String value is correct and click OK.
2c. Activate the Scope
The scope can be manually activated by right clicking on the scope, select All Tasks and select Activate. The activation
is immediate.
You should now be able to start installing H.323 IP phones using DHCP. Ensure that Manager is running on the PC
specified as the TFTP server.
7.2 Alternate Options
In this document, all IP phone information is issued through the Scope and the Option 176 settings. Depending on the
DHCP server, other options may have to be used within the scope.
· Option 6: DNS Server Address
On the Windows 2000 DHCP server this is set through the scope. Other DHCP servers may allow or require it to be
set through Option 6 with multiple addresses separated by a comma and no spaces. At least one address must be
a dot decimal IP address.
· Option 15: DNS Domain Name
On the Windows 2000 DHCP server this is set through the scope. Other DHCP servers may allow or require it to be
set through Option 15. This option is necessary if the TFTP server is indicated by name rather than address (not
supported on Windows DHCP).
· Option 66: TFTP Server Name
Allows the specifying of the TFTP server address. Multiple addresses can be entered with each address separated
by a comma and no spaces. Microsoft DHCP servers only support dot decimal IP addresses.
Note
· The H.323 IP phones, any Option 66 settings will be overridden by any TFTP entry in Option 176. Using Option 66
as part of the Scope is useful if alternate Gatekeeper addresses are required in the Option 176 settings whilst
keeping within the 127 character limit.
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