Configuring Kerio Operator and Cisco SPA8800 for calls over an analog telephone line

Cisco SPA8800 is an analog-to-SIPSession Initiation Protocol - A communication protocol used for voice and video calls in Internet telephony or private IP telephone systems. gateway equipped with 4 FXS and 4 FXO telephone ports.


This information is designed for Kerio Operator 2.4 and newer.

Learn how to configure the SPA8800 with Kerio Operator to place and receive phone calls over the FXO interface (analog telephone line).

Both Operator and the SPA8800 are now configured and you can place some test calls. If you are not satisfied with the volume of the sound transmitted from the analog side to VoIP or vice versa, you can return to the Line 1 configuration page, scroll to International Control and change the values for SPA To PSTN Gain and/or PSTN To SPA Gain.