| Feature |
DR2
|
DR3
|
DR4
|
DR5
|
|
Accidental
Disconnect
|
X
|
X |
X |
X |
|
Answer
Buttons
|
X
|
X |
X |
X |
|
Auto
Answer
|
|
|
N
|
X |
|
Autodial
Keys
|
X
|
E
|
X |
X |
|
Automatic
Line Selection
|
X
|
X |
X |
X |
|
Automatic
Set Relocation
|
E
|
X |
X |
X |
|
Auxiliary
Ringing
|
X |
E
|
X |
X |
|
Background
Music
|
X |
X |
X |
X |
|
Busy
Lamp Indication
|
X |
X |
X |
X |
|
Button
Inquiry
|
X |
E
|
X |
X |
|
Call
Display when busy
|
X |
X |
X |
X |
|
Call
Duration timer
|
X |
X |
X |
X |
|
Call
Forward All Calls
|
X |
X |
X |
X |
|
Call
Forward No Answer
|
X |
X |
X |
X |
|
Call
Forward On Busy
|
|
N
|
X |
X |
|
Call
Forward Override
|
X |
X |
X |
X |
| Call
Identification (Internal Calls) |
X |
X |
X |
X |
|
Call
Park
|
X |
X |
E
|
X |
|
•
Prefix Digits
|
|
|
|
|
|
Call
Pickup
|
E
|
X |
X |
X |
|
•
Directed
|
X |
X |
X |
X |
|
•
Group
|
|
|
X |
X |
|
Call
Queuing
|
|
N
|
X |
X |
|
Camp
On (Call Waiting)
|
|
N
|
X |
X |
|
Class
of Service
|
|
|
N
|
X |
|
CMS/CLASS
Call Info Session
|
|
|
|
N
|
| CMS/CLASS
Call Log |
|
|
|
N-600
calls |
| CMS/CLASS
LOGIT (Call Logging) |
|
|
|
N |
| CMS/CLASS
Long Distance Indic. |
|
|
|
N |
|
CMS/CLASS
Name Display
|
|
|
|
N
|
|
CMS/CLASS
Number Display
|
|
|
|
N
|
|
Conference
|
X
|
X
|
E
|
X
|
|
Custom
Business Product Compatibility
|
X
|
X
|
X
|
X
|
|
Delayed
Ring Transfer
|
E
|
X
|
X
|
X
|
|
Dial
"0" Station (see also direct dial)
|
E
|
E
|
E
|
X
|
|
Dialing
Modes
|
|
N
|
X
|
X
|
|
•
Automatic
|
|
X
|
X
|
X
|
|
•
Predial
|
|
X
|
X
|
X
|
|
Dialing
Filters
|
|
|
N
|
X
|
|
Direct
Dial (see also Dial "0" station)
|
X
|
X
|
E
|
X
|
|
Attendant
Digit
|
|
|
N
|
X
|
|
Multiple
Attendants
|
|
|
N
|
X
|
|
Direct
Station Select buttons
|
X
|
X
|
X
|
X
|
| DISA
(Direct Inward System Access) |
|
|
N |
X |
|
Disconnect
Supervision
|
|
N
|
X
|
X
|
|
Discriminating
Ringing at Set
|
X
|
X
|
X
|
X
|
|
Distinctive
Ringing at Set
|
X
|
X
|
X
|
X
|
|
End
to End Signaling
|
X
|
E
|
X
|
X
|
|
•
Long tones - External
|
X
|
X
|
X
|
X
|
|
•
Long tones - Internal
|
X
|
X
|
X
|
X
|
| •
Long tones - On external paging port |
|
X
|
X
|
X
|
|
•
Short tones - External
|
X
|
X
|
X
|
X
|
|
•
Short tones - Internal
|
X
|
X
|
X
|
X
|
| Enhanced
Trunking Connectivity |
|
|
|
|
|
with
E&M and DID
|
|
|
N
|
X
|
|
Flexible
Call Restrictions & Override
|
E
|
E
|
E
|
X
|
|
Group
Listening
|
|
N
|
X
|
X
|
|
Handsfree
|
X
|
E
|
X
|
X
|
|
•
Automatic
|
|
X
|
X
|
X
|
|
Hold
|
X
|
X
|
X
|
X
|
|
Hot
Line
|
|
N
|
X
|
X
|
|
Installer
Password
|
X
|
X
|
X
|
X
|
|
Host
System Signaling
|
E
|
E
|
X
|
X
|
|
Feature
code compression
|
|
X
|
X
|
X
|
|
Recall/
Link
|
X
|
X
|
X
|
X
|
|
Pause,
run/stop, timed release
|
X
|
X
|
X
|
X
|
|
Programmed
Release
|
|
X
|
X
|
X
|
|
Language
Choice
|
X
|
X
|
X
|
X
|
|
Last
Number Redial
|
X
|
X
|
X
|
X
|
|
Line
Redirection
|
|
|
N
|
X
|
|
Line
Button Relocation
|
|
N
|
X
|
X
|
|
Line
Profile
|
X
|
X
|
X
|
X
|
|
Line
Pool(s)
|
E
|
E
|
E
|
X
|
|
•
Busy Status
|
|
X
|
X
|
X
|
|
Long
Tones
|
X
|
E
|
X
|
X
|
|
Maintenance
Alarms
|
X
|
X
|
X
|
X
|
|
Make
Set Busy (Do Not Disturb)
|
X
|
X
|
X
|
X
|
|
Night
Service - Service Modes
|
E
|
E
|
X
|
X
|
|
Onhook
Dialing
|
X
|
E
|
X
|
X
|
|
Paging
|
E
|
E
|
X
|
E
|
|
•
External
|
X
|
X
|
X
|
X
|
|
•
Y/N on a Per Set Basis
|
|
|
|
N
|
|
Priority
Call (Executive Busy Override)
|
X
|
X
|
X
|
X
|
|
Privacy
Control
|
|
N
|
X
|
X
|
|
Ring
Again
|
E
|
X
|
X
|
X
|
|
•
On Busy Set
|
X
|
X
|
X
|
X
|
|
•
On Busy Line Pool
|
X
|
X
|
X
|
X
|
|
•
On No Answer (Internal)
|
X
|
X
|
X
|
X
|
|
Saved
Number Redial
|
X
|
E
|
X
|
X
|
|
Set
Profile
|
X
|
X
|
X
|
X
|
|
Speed
Dial: Personal
|
X
|
E
|
X
|
X
|
|
Bypass
Restrictions
|
|
X
|
X
|
X
|
|
Line
Selection
|
|
X
|
X
|
X
|
|
Names
|
|
X
|
X
|
X
|
|
Speed
Dial: System
|
E
|
E
|
X
|
X
|
|
Bypass
Restrictions
|
|
X
|
X
|
X
|
|
Line
Selection
|
|
X
|
X
|
X
|
|
Names
|
|
X
|
X
|
X
|
|
Target
Lines
|
|
|
N
|
X
|
|
Telephone
Admin Lock
|
|
N
|
X
|
X
|
|
Time/Date
Display
|
X
|
E
|
X
|
X
|
|
•
Show Time
|
|
X
|
X
|
X
|
|
Transfer
|
E
|
X
|
E
|
E
|
|
•
Immediate (Callback)
|
X
|
X
|
X
|
X
|
|
•
Over Public Network
|
|
|
X
|
|
|
•
With Announcement
|
X
|
X
|
X
|
X
|
|
Unsupervised
Conference
|
|
|
N
|
|
|
Voice
Call
|
X
|
X
|
X
|
X
|
|
Voice
Call Deny
|
X
|
X
|
X
|
X
|
