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Chapter 2 – Configuration
22 Multi-Tech Systems, Inc. Avaya Communication Manager Guide
7e. To add an entry for an IP phone, configure Endpoint Type, Product ID, Names, Phones, and
Security code fields as indicated below. Configure Phones and Security Code to match the values
configured for this IP phone in Communication Manager. Leave the other fields blank. One entry
is required for each IP phone located at the same site as this MultiVOIP. Do not create entries for IP
phones located at other sites. They will not be able to register with this MultiVOIP in the event of a
wan link failure. Click OK to save this entry. Repeat the above steps to add additional IP phone
entries. The MVP210, MVP410, and MVP810 support 5,10, or 15 IP phones respectively.
The IP phones must be configured to use DHCP and the DHCP server must be located at the same
site as the MultiVOIP and IP phones. This is the only means by which the IP phones are made aware
of alternate gatekeepers, such as the MultiVOIP gatekeeper when the CM is unavailable due to WAN
link failure.
Refer to the following Avaya documents for instructions on how to configure the DHCP server.
● 4600 Series IP Telephone Lan Administrator’s Guide (Avaya document number 555-233-507).
Read the section titled “DHCP” under “Server Administration”.
● Avaya one-x Deskphone Edition for 9600 Series IP Telephones Administrator’s Guide Release
1.5 (Avaya document number 16-300698). Read the section titled “DHCP and File Server”
under “Server Administration”.
● Avaya one-x Deskphone Value Edition 1600 Series IP Telephones Administrator’s Guide
Release 1.0 (Avaya document number 16-601443). Read the section titled “DHCP Server
Administration”.
Your DHCP server must utilize site-specific options (SSON) #176 (46xx models) and/or #242 (16xx,
96xx models) which are IP Telephone-specific DHCP options specifying information such as TFTP
server and Definity CLAN IP address. The MultiVOIP IP address must be listed at the end of the
string. MCIPADD=xxx.xxx.xxx.xxx,yyy.yyy.yyy.yyy where xxx.xxx.xxx.xxx is one or more IP
addresses used for Definity/CM CLAN IP boards and yyy.yyy.yyy.yyy is the MultiVOIP’s IP
address.