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)

CS 1000Total 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

ESI CS 1000 Brochure Adobe PDF Brochure

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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)