ESI CS 1000 Business Phone System

Communication Server

The ESI-1000 architecture allows expansion when required. Each system cabinet (one Base Cabinet and up to five Expansion Cabinets) mounts in a standard equipment rack or on the wall.

System highlights (maximum capacities shown)

Total stations – 816
IP stations – 816
Digital stations – 504
Analog stations – 384
Call-processing ports – 1,128
Central Office (CO) lines – 240
Digital line cards (T1/PRI) – 10
Voice mail ports – 128
Voice storage (hours) – 1,200
Station/special-purpose mailboxes – 1,941
Conference ports (16 members/conference) – 64
Built-in automatic call distribution (ACD) – Yes
Shared-office tenanting (tenants) – 8
ESI Presence Management – Optional
VIP applications – Optional
Mirrored Memory Module (M3) backup – Standard

Plus other ESI Communications Server features:

• Both digital and IP-based
• Standards-based design (including SIP support)
• ESI’s Verbal User Guide™
• Six-level, 100-branch automated attendant
• Automatic call distribution (ACD)
• ESI phones
  • Desktop and cordless models
  • Digital and IP
• ESI options
  • ESI Presence Management™
  • VIP™ family of applications
• Optional IP-based features, including Esi-Link (combines up to 100 ESI systems into one)