ESI phone systems at a glance

 

 

 IVX IP
  IVX S-Class IVX E-Class IP E-Class
      42s 42s 42s IVX
72e		 IVX
128e		 IP
40e		 IP
200e
Voice messaging config.
IAM = Integrated
Answering Machine
VM = Voice mail		       IAM 4-port VM 6-port VM 8-port VM 16-port VM 8-port VM 16-port VM

 Phones/systems compatibility
  See also phone comparison chart on this page
48-Key Feature Phone      
24-Key Feature Phone       n/a n/a
12-Key Feature Phone       n/a n/a
60-Key Console support      
IP phone support       — — — Optional Optional
Remote IP Feature Phones       —     Optional Optional Optional Optional

 Features and options
Maximum call-processing ports       42 42 42 72 126 70 198
Available
port card slots		       2 2 2 4 7 2 10
Smallest configuration
Lines x extensions
x analog ports		       4x8x2 4x8x2 4x8x2 6x12x0 6x12x0 3 X 28 3 X 96
Maximum
CO lines		       12  12 12 42  66 30 66
Maximum
digital stations		       24 24 24 48 84 28 96
Maximum
analog ports		       6  6 6 16  28 6 30
Maximum
T1 channels		       — — — 24 48 24 48
Maximum
PRI channels		       — —  — 23  46 24 48
Esi-Mail™ unified
messaging support		       — — — Optional Optional Optional Optional
TAPI support       Optional Optional Optional Optional Optional Standard Standard
Esi-Link™ IP
multi-site support		       — — —
Maximum built-in
user mailboxes		       —  30 30 48  84 34 126
Built-in
auto attendant		       —
Maximum automated attendant branches       — 18 18 100  100 100 100
Voice message
storage (hrs.)		       0.5 2 30 70 280 70 280
Built-in voice
message channels		       2 4 6 8  16 8 16
Guest/information
mailboxes		       — 10 10 190 190 190 190
Automatic fax switching      
Music/message-
on-hold recordings		       4 5 5 8 8 8 8
SMDR (Station Message
Detail Recording)		      
Internal paging      
External paging interface      
Built-in modem      
Dedicated serial ports       1  1 1 1  1 1 1
Programming via PC, local      
Programming via PC, remote      
Esi-Dex™ built-in directory      
ACD (automatic
call distribution) 		      — — —
Verbal Help Guide™
— spoken help		      
Dedicated
VOICE MAIL key (24-/48-Key Phones)		      
Live call recording      
Live call screening      
On-hold dialing      
Enhanced Caller ID*      
Personal greeting keys      
Service observing      
911 alert      
AutoPage       —  — —
Cascade paging
mailboxes		       — — —
Q & A mailboxes       — — —
Group mailboxes       — — —
Off-premises
message delivery		      
Off-premises
“reach me”		        
Message Recycle Bin      
Missed Call Key       —  — —
Quick Groups™       — — —
Quick Move™       — — —
QuickPage™       —  — —
Remote recording
of main greeting		       —  
Voice mail display      
Visual hold      
Virtual Answer Key       —  — —