To configure SIP settings for Cisco CP-8845-3PCC devices, do the following:
Go to the Voice section.
Click the Ext. 1 tab.
In the Proxy and Outbound proxy fields, enter the IP address of the Sipelia Server.
In the Display Name, User ID and Auth ID fields, enter the extension number that was assigned when you added the SIP intercom in Security Center.
In the Password field, enter the password that was set when you added the SIP intercom in Security Center.
In the SIP URI field, enter the Extension@SipeliaServerIPAddress.
All other settings can remain as the default values
Click Submit All Changes.