ESI phone systems at a glance

Return to: IVX S-Class • E-Class (IVX/IP) • IVX X-Class

Phones/systems compatibility See also phone comparison chart on this page pt = port • IAM = Integrated Answering Machine • VM = Voice mail
	IVX									IP E-Class Gen. II
	IVX C-Class Gen. II		IVX S-Class Gen. II			IVX E-Class Gen. II		IVX X-Class		IP E-Class Gen. II
	IVX 20c		IVX 56s			IVX 72e	IVX 128e	IVX 128x	IVX 256x	IP 40e	IP 200e
Voice messaging configuration	No VM	2-pt VM	IAM	4-pt VM	6-pt VM	8-pt VM	16-pt VM	24-pt VM	24-pt VM	8-pt VM	16-pt VM
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	—	—	—	—	—	Opt.	Opt.	Opt.	Opt.
Remote IP Feature Phones	—	—	—	—	—	Opt.	Opt.	Opt.	Opt.	Opt.	Opt.

Features and options See also phone comparison chart on this page pt = port • IAM = Integrated Answering Machine • VM = Voice mail
	IVX									IP E-Class
	IVX C-Class Gen. II		IVX S-Class Gen. II			IVX E-Class Gen. II		IVX X-Class		IP E-Class
	IVX 20c		IVX 56s			IVX 72e	IVX 128e	IVX 128x	IVX 256x	IP 40e	IP 200e
Voice messaging configuration	No VM	2-pt VM	IAM	4-pt VM	6-pt VM	8-pt VM	16-pt VM	24-pt VM	24-pt VM	8-pt VM	16-pt VM
Maximum call- processing ports	20	20	56	56	56	72	126	126	252	58	192
Available port card slot(s)	1	1	3	3	3	4	7	7	14	2	10
Smallest configuration Lines × extensions × analog ports	3×6 ×2	3×6 ×0	4×8 ×2	4×8 ×2	4×8 ×2	6×12 ×0	6×12 ×0	6×12 ×0	6×12 ×0	3×0 ×3	3×0 x3
Maximum CO lines	6	6	16	16	16	42	66	78	84	30	66
Maximum extensions	12	12	32	32	32	48	84	84	168	28	96
Maximum analog ports	2	2	8	8	8	16	28	28	56	6	30
Maximum T1 channels	—	—	—	—	—	24	48	48	72	24	48
Maximum PRI channels	—	—	—	—	—	23	46	46	69	23	46
Network Services Processor (NSP)	—	—	Opt.	Opt.	Opt.	Opt.	Opt.	Std.	Std.	Opt.	Opt.
VIP™ communications management	n/a	—	Opt.	Opt.	Opt.	Opt.	Opt.	Opt.	Opt.	Opt.	Opt.
TAPI support	—	—	Opt.	Opt.	Opt.	Opt.	Opt.	Opt.	Opt.	Std.	Std.
IVX Presence Management	—	—	Opt.	Opt.	Opt.	Opt.	Opt.	Opt.	Opt.	—	—
Time and Attendance Management Option	—	—	Opt.	Opt.	Opt.	Opt.	Opt.	Opt.	Opt.	—	—
Esi-Link™ IP multi-site support	—	—	—	—	—	Opt.	Opt.	Opt.	Opt.	Opt.	Opt.
Maximum built-in user mailboxes	n/a	14	n/a	30	30	48	84	84	168	34	126
Built-in automated attendant	n/a		n/a
Maximum automated attendant branches	n/a	18	n/a	18	18	100	100	100	100	100	100
Voice message storage (hrs.)	n/a	2	0.5	6	30	140	280	420	420	70	280
Built-in voice message channels	n/a	2	2	4	6	8	16	24	24	8	16
Guest/information mailboxes	n/a	10	n/a	10	10	190	190	190	190	190	190
Automatic fax switching
Music/message- on-hold sources	2	5	4	5	5	8	8	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	1
Maximum simultaneous conference calls (4 per conference)	2	2	2	2	2	4	4	6	6	4	4
Privacy release
Programming via PC, local	—	—
Programming via PC, remote	—	—
Esi-Dex™ built-in directory
ACD (automatic call distribution)	—	—	—	—	—
ACD reporting	n/a	n/a	n/a	n/a	n/a
Verbal Help Guide™ — spoken help
Dedicated VOICE MAIL key (24-/48-Key Phones)	n/a
Live call recording *	n/a		—
Live call screening	n/a		**
On-hold dialing
Three-character dial-by-name from auto attendant	n/a	—	—	—	—
Enhanced Caller ID ***
Caller ID data* to analog ports**
Call forwarding
Intelligent Call Forwarding™ on PRI lines	—	—	—	—	—
Shared-office tenants	—	—	—	—	—	2	2	4	4	2	2
Personal greeting keys	n/a		**
Service observing	—	—	—	—	—
911 alert
AutoPage	—	—	—	—	—
Cascade paging mailboxes	n/a	10	—	10	10	10	10	10	10	10	10
Q & A mailboxes	n/a	—	—	—	—	10	10	10	10	10	10
Group mailboxes	n/a	—	—	—	—	16	16	16	16	16	16
Off-premises message delivery
Off-premises “reach me”
Message Recycle Bin	n/a		**
Missed Call Key	—	—	—	—	—
Quick Groups™	n/a		—
Quick Move™	n/a		—
QuickPage™	—	—	—	—	—
Remote recording of main greeting	n/a		—
Voice mail display *	n/a
Visual hold
Virtual Answer Key	n/a	—
Virtual Mailbox Key *	n/a		—

Phone comparison chart

Phone model	12-Key Digital	24-Key Digital	48-Key Digital	48-Key Digital TAPI	48-Key IP	48-Key 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
Built-in headset jack*****	—	—					n/a
Speaker							n/a
Microphone (for spkrphn. use)	—						n/a
Four-angle tilt stand
Status indicator lamp	—						n/a

*	Not available on 12-Key Feature Phone.
**	Master User only (IAM-equipped systems).
***	Requires Caller ID service from your telephone service provider; Caller ID not enhanced on 12-Key Feature Phone.
****	No dedicated VOICE MAIL key, but any of the programmable feature keys can be programmed to perform the same functions.
*****	On models shipped since March 1, 2004.

IVX X-Class, IVX S-Class, IVX E-Class, and IP E-Class products available only from 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 © 2005 ESI (Estech Systems, Inc.). IVX is a registered trademark of ESI.