Nortel 1000 Installation And Commissioning Manual page 227

Figure 105
IP Telephony parameter configuration
— If you did enter the address of the Primary NRS, enter the
address of the Alternate NRS (also optional).
The Gatekeeper configuration can be updated later using Element
Manager. The IP telephony parameter configuration screen appears
(Figure 105).
Communication Server 1000E
Installing a Signaling Server
Installation and Commissioning
Page 227 of 466