Abbreviated Dialing/Speed Dial SSSS Account Code Forced/Verified/Unverified SSSS Account Code Entry SSSS Alarm SSSS Alarm Reports SSES Alphanumeric Display SSSS Analog Communications Interface (ACI) SSSS Ancillary Device Connection SSSS Answer Hold/Automatic Hold SSSS Attendant Call Queuing SSSS Automatic Call Distribution (ACD) N/ASSS Automatic Release SSSS Automatic Route Selection (ARS/F-Route) SSSS Background Music SSSS Barge-In SSSS Battery Backup - System Memory SSSS Battery Backup - System Power SSSS Built-in Automated Attendant SSSS Call Arrival (CAR) Keys SSSS Call Duration Timer SSSS Call Forwarding SSSS Call Forwarding with Follow Me SSSS Call Forwarding, Off-Premise SSSS Call Forwarding/Do Not Disturb Override SSSS Call Monitoring SSSS Call Redirect SSS