Hi<br><br>I am using adtran atlas 550 as CO.I connected router's FXO port to ADTRAN's FXS port and ADTRAN's FXS port to another routers FXO port.I connected ip phones to the routers.<br><br>When i call from one phone to another the call gets established but i cannot see any ring on the other phone.When i connect analog phone directly to the ADTRAN's FXS port the phone is ringing.but when i connect router which has phone the phone is not ringing.<br>
<br>Can someone help me with this.<br>