ESI phone systems at a glance

	IVX								IP
	IVX C-Class			IVX S-Class			IVX E-Class		IP E-Class
	20c	20c	20c	42s	42s	42s	IVX 72e	IVX 128e	IP 40e	IP 200e
Voice messaging config. IAM = Integrated Answering Machine VM = Voice mail	IAM	2-port VM	4-port VM	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	20	20	20	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	6x12x2	6x12x2	6x12x2	4x8x2	4x8x2	4x8x2	6x12x0	6x12x0	3 X 28	3 X 96
Maximum CO lines	6	6	6	12	12	12	42	66	30	66
Maximum digital stations	12	12	12	24	24	24	48	84	28	96
Maximum analog ports	2	2	2	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	—	14	14	—	30	30	48	84	34	126
Built-in auto attendant	—			—
Maximum automated attendant branches	—	18	18	—	18	18	100	100	100	100
Voice message storage (hrs.)	0.5	2	6	0.5	2	30	70	280	70	280
Built-in voice message channels	2	2	4	2	4	6	8	16	8	16
Guest/information mailboxes	—	10	10	—	10	10	190	190	190	190
Automatic fax switching
Music/message- on-hold recordings	4	5	5	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	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	—	—	—	—	—	—
Virtual Mailbox Key

Phone comparison chart
Phone model	12-Key Digital	24-Key Digital	48-Key Digital	48-Key Digital TAPI	48-Key IP	Remote IP	60-Key Console
Display (lines • characters)	1 • 16	2 • 32	3 • 56	3 • 56	3 • 56	3 • 56	n/a
Programmable feature keys	9	12	30	30	30	30	60
Fixed feature keys	3	12	17	17	17	17	n/a
VOICE MAIL key	**						n/a
Four-angle tilt stand
Speaker							n/a
Microphone (for speakerphone use)	—						n/a
Status indicator lamp	—						n/a

*		Requires Caller ID service from your telephone service provider.
**		No dedicated VOICE MAIL key, but any of the programmable feature keys can be programmed to perform the same functions.

IVX S-Class, IVX E-Class and IP E-Class products available from only resellers with certain ESI factory training. Product specifications and details subject to change without notice. Some features mentioned herein may not yet be available. Copyright © 2004 ESI (Estech Systems, Inc.).