| Account Codes - Unverified/Verified/Traveling COS | CO Line Name Programming (7-character) | Mailbox Buttons |
| Alarm Key - Diagnostics Alert | CO Line Assignment (Complete Flexibility) | Meet me Page |
| Alpha-Numeric Display (Super Twist) | CO Line Programming Copy | Message Waiting |
| All Call Paging | CO Line Queuing (CO Line Call Back) | Music On Hold |
| Automated Attendant (Optional Includes Alternate | CO Line Ringing Mode (Day/Night/Special) | Mute |
| Ringing Mode) | CO Line Signaling (Tone/Pulse) | Muted Ring |
| Analog Adapters | CO Line Loop Supervision (Call Abandon) | Name in Display |
| Answering Machine Emulation | Computer Telephony Integration (CTI) | Night Service Activate |
| Attendant override | Conference (Establish/Exit/Re-enter/Terminate) | OHVO – Off Hook Voice Over |
| Attendant Alert (911 feature) | CTI Adaptable | On Hook Dialing |
| Attendant Unavailable (Alternate Position) | Database Programming via TU | Off Hook Preference/Programming |
| Attendant - Setting System Day & Night Time | Database Programming via PC-DBA | One Touch Recording |
| Attendant - Directory by List Programming | Day/Night Special Mode | Paging (Internal/External) |
| Attendant - Software Version Display | Dial Pad Confirmation Tone | Paging (Allow & Deny) |
| Attendant - Speed Dial - System Storing | Disable Outgoing Co Access | Pause Insertion |
| Attendant Administration | DTMF Receivers (One per Analog Port) | PC Database Administration |
| Attendant/Extension Console | Dial By Name | Personalized Messages |
| Attendant Recall | DISA | PBX/Centrex on a Flex Button |
| Automatic Three Mode Operation | DSS/BLF | PBX/Centrex Transfer |
| (Day/Night/Special) | Distinctive Ringing (On CO/STA) | Power Supply – 110/220VAC |
| Automatic Hold | Discriminating Ringing (Internal/External | Privacy |
| Automatic Line Selection (Programmable) | Call Specific) | Privacy Release |
| Automatic Mode (Day/Night/Special) | Default Numbering Plan | Private Line |
| Automatic Privacy | Do Not Disturb Plan | Pulse to DTMF Conversion |
| BGM (1) channel - MOH | Dual Color LEDs | Recall |
| Barge In | End to End Signaling | Reminder Tones |
| Battery Backup | Executive/Secretary Screen | Remote Programming via PC-DBA |
| Busy Lamp Field | Extension Groups (Paging, Pick Up) | Repeat Redial |
| Call Announce - Privacy | Extension Programming Copy | Ringing Line Priority |
| Call Back | Extension Swapping | Saved Number Redial |
| Call Coverage | Extension User Name | Screened Transfer |
| Call Duration Timer | External Music Source | SLT/Analog Device Support |
| Call Forward - All Calls | Fax Detection with Automatic Transfer | SLT Co Line Flash |
| Call Forward - Busy | Feature Code List | SLT Hotline |
| Call Forward Busy/No Answer | Flash | Speakerphone |
| Call Forward Extension Direct | Flexible Feature Button Inquiry | Station ID Lock |
| Call Forward - Extension - External | Flexible System Numbering Plan | Station Off Net Call Forwarding (via speed dial) |
| Call Forward - Override | Flexible Extension Numbering Plan | SMDR |
| Call Forward - No Answer | Flexible Feature Button Programming | Station Renumbering |
| Call Park (System/Personal/Station) | Forced CO Call Forward | Speed Dial (20 per station) |
| Call Pickup (Directed Pickup/Group Pickup) | Forced Intercom Call Forward | Speed Dial (1000 per system) |
| Caller ID Name & Number | Forced Intercom Tone Ring | Storing Speed Numbers |
| Calling Station Tone Mode | Forced Release | T1 Capability |
| Caller ID Call Table (100-System) | Group Listening | Text Messaging |
| Call Operator/Attendant (Programmable Code) | Headset Mode | Toll Restriction |
| Caller ID Answered/Unanswered Call Review | Hold Abandon | UCD (Available/Unavailable Mode) |
| Call Transfer | Holding Call Answer/Select | UCD (Display calls in queue) |
| Calling Party Indication | Hold - Common (System) | UCD Agent Log Off/On |
| Camp-On Extension | Hold - Exclusive | UCD Overflow (Station Forward) |
| Centrex Compatibility | Hold Reminder | Universal Day/Night Answer |
| Class of Service - CO Line | Hot Key | UCD Reroute Destination |
| Class of Service - Extension | Hour Mode Selection | UCD Voice Announce Group |
| CO Ring Tones | Hot Line | User Name Programming |
| CO Line Receive Assignment (allows answering | Hunt Groups via UCD-Linear | Virtual Number |
| ability while restricting outgoing access.) | I-Hold Indication | Voice Mail/Call forward to voice mail groups) |
| CO Line Ring Assignment | I-Use Indication | Voice Announce - Handsfree Reply |
| CO Line Type Assignment (PBX, CO, Device Port) | Incoming CO Transfer | Volume Controls |
| CO Lines Offnet Forward - Incoming | Intercom Buttons/Intercom Call/Keyset Mode | Warning Time |
| (via Speed Dial) | Intercom Non Blocking | Warning Tone |
| CO Line Group (Pooled Access) | Interactive Softkeys | Worksheets (Flex Button Program Worksheet |
| CO Alternate Route | Last Number Redial | & Speed Dial Program Worksheet) |