You can test the ESL button on a phone once inbound and outbound routing is configured on the alternate call server. The Wave primary call server does not need to be down to test ESL.
- To test making an outbound call via the alternate call server, select the ESL button. At dial tone, call any extension or external number allowed for the associated extension on the alternate call server.
- To test receiving an inbound call from the alternate call server, dial the extension from a phone on that server, and select the ESL button to answer the call.