Perform the following tasks on the Wave primary call server:
- Obtain the following information from the administrator on the alternate call server:
- IP address of the alternate call server and the port number used for IP telephony.
- List of target extensions configured for use with ESL.
If SIP authentication is enabled on the alternate call server, the list must also include the SIP authentication username and password for each extension.
If your alternate call server is another Wave, see “Obtaining SIP authentication passwords in Wave”.