ESI IVX 128E Phone System Expansion Cabinet

The ESI IVX 128e expansion phone system cabinet provides additional expansion of your existing IVX 128E phone system for up to another two port cards. The cabinet enables users to add up to 12 analog...

ESI CS100 A4 PC Expansion Port Card

The ESI CS100 is an expansion port card that provides an additional four analog stations for your ESI CS100 phone system. The ESI CS100 A4 port card is a second generation card. ESI CS100 A4...

ESI CS-100 Phone System with 48 Key H DFP Phones Bundle

The ESI CS-100 Phone System with 48 Key H DFP Phones Bundle is an excellent small business phone system. This special ESI bundle comes with either 5 or 10 ESI 48 Key H DFP phones and an ESI E2...

ESI CS 100 Phone System (ESI-100)

The ESI-100 Communications Server is a phone system that supports both digital and IP phones depending on what modules you have installed (please note, IP licensing required).  This listing is...

ESI 5000-0419 CS 684 Port Card Communications Server

The ESI CS 684 port card is designed to fit the Communications Servers produced by ESI. Each 684 Port Card (5000-0419) provides 6 analog trunks, 8 digital ports, and four analog ports. ESI CS 684...

ESI CS 612 Port Card Communications Server 5000-0418

The ESI 5000-0418 is an add on module for Communications Servers. The ESI 5000-0418 is a CS 612 port card. The ESI 612 card adds 6 analog CO trunks for PSTN connectivity and 12 digital station ports...

ESI IVX S-Class E-Class Phone System Expansion Cabinet

The ESI Expansion Cabinet for ESI S-Class and E-Class phone systems expands the systems to accept an additional two port cards. The cabinet includes grounding capabilities for connecting your...

ESI 5000-0420 CS D12 PC 12 Port Digital Extension Card

The ESI 5000-0420 is an add on module for ESI Communications Server systems. The module provides 12 digital station ports to add additional digital phones to your system. The module is compatible...