Incoming calls routed to a ring group of three extensions (all 57i's). Person at extension A answers the call. Another call comes in. Skip busy agent in the ring group is not checked in Asterisk (FreePBX). As I understand it, the person on extension A should be able to use the <> navigation buttons on the 57i to get caller ID info on the second call appearance before someone else answers it. BTW, on the 57i's, Global SIPs are configured, not each line. Suggestions? TIA.