The ESI-100 combines multiple first-rate, feature-rich systems into one tightly integrated unit:

• Business phone system
• Voicemail
• Automated attendant
• Messages-on-hold
• Enhanced Caller ID
• Automatic call distribution (ACD)
• Intelligent Call Forwarding
• Optional Windows-based communication management tools: VIP, VIP Professional, and ESI
• PC Attendant Console
• Optional ESI Presence Management
• Network-based VoIP telephony

System Capacity :

Total stations - 84
IP stations - 72
Digital stations - 48
Analog stations - 28
Call-processing ports - 108
Central Office (CO) lines - 42
Digital line cards (T1/PRI) - 1
Voice mail ports - 8
Voice storage (hours) - Up to 140
Station/special-purpose mailboxes - 1,121
Conference ports (16 members/conference) - 16
Built-in automatic call distribution (ACD) - Yes
Shared-office tenanting (tenants) - 2
ESI Presence Management - Optional
VIP applications - Optional
Mirrored Memory Module (M3) backup - n/a