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ESI Communications IVX 128 Digital Phone System with T1 12 Port Card (Refurbished) ESI Communications IVX 128 Digital Phone System with T1 12 Port Card (Refurbished)

Key Features: ESI IVX 128 Digital Phone System w/ T1 12 Port Card Condition: Refurbished

Our Price: $449.00
ESI 5000-0135 GEN 1 D12 12-Port Station Card (Refurbished) ESI 5000-0135 GEN 1 D12 12-Port Station Card (Refurbished)

Key Features: Mfr. Part #: 5000-0135 Adds 12 Digital Extensions Compatibility: ESI IVX Digital Phone System Condition: Refurbished

Our Price: $129.00
ESI 5000-0257 IVX 482 1st Gen Port Expansion Card (Refurbished) ESI 5000-0257 IVX 482 1st Gen Port Expansion Card (Refurbished)

Key Features: Mfr. Part #: 5000-0257 4 Analog CO Lines 8 Digital Extensions 2 Analog Extensions Compatibility: ESI C-Class System, ESI 42 S (Gen1) System Condition: Refurbished

Our Price: $155.00
ESI IVX S-Class 5000-0269 Gen 1 KSU (Refurbished) ESI IVX S-Class 5000-0269 Gen 1 KSU (Refurbished)

Key Features: Mfr. Part #: 5000-0269 ESI IVX S-Class KSU Gen 1 Condition: Refurbished

Our Price: $299.00
ESI 5000-0321 IVC Card (Refurbished) ESI 5000-0321 IVC Card (Refurbished)

Key Features: Mfr. Part #: 5000-0321 ESI IVC Card Condition: Refurbished

Our Price: $179.00
ESI 5000-0374 IVX E2 A12 Analog Station Card (Refurbished) ESI 5000-0374 IVX E2 A12 Analog Station Card (Refurbished)

Key Features: Mnfr. Part #: 5000-0374 ESI IVX E2 A12 Analog Station Card Connects up to 12 analog devices (only) such as fax machines and cordless phones Uses 12 station ports...

Our Price: $199.00
ESI 500-0160 Gen 1 A12 12-Port Analog Station Card (Refurbished) ESI 500-0160 Gen 1 A12 12-Port Analog Station Card (Refurbished)

Key Features: Mfr. Part #: 5000-0160 IVX A12 12 Port Analog Station Circuit Card Condition: Refurbished

Our Price: $199.00
ESI 50 Communications Server Phone System (Refurbished) ESI 50 Communications Server Phone System (Refurbished)

Key Features: ESI-50 includes a built-in 482 port card and IVC hardware One expansion slot for another 482 card. Simply activate the IVC to add IP phones and/or Esi-Link licenses. Both...

Our Price: $649.00
ESI 50 Communications Server Phone System Upgraded Voicemail (Refurbished) ESI 50 Communications Server Phone System Upgraded Voicemail (Refurbished)

Key Features: ESI-50 includes a built-in 482 port card and IVC hardware along with one expansion slot for another 482 card Simply activate the IVC to add IP phones and/or Esi-Link...

Our Price: $649.00
ESI 5269-0254 42S Basic KSU Cabinet with Power Supply (Refurbished) ESI 5269-0254 42S Basic KSU Cabinet with Power Supply (Refurbished)

Key Features: Mfr. Part #: 5269-0254 ESI 42S Basic KSU Cabinet with Power Supply Condition: Refurbished

Our Price: $475.00
ESI Communications IVX 56S S-Class Generation II Digital Phone System without NSP (Refurbished) ESI Communications IVX 56S S-Class Generation II Digital Phone System without NSP (Refurbished)

Key Features: ESI S-Class Generation II All In One Digital Phone System ESI provides big-system features into the small-business IVX S-Class The IVX phone system design means all vital business communications...

Our Price: $299.00
ESI 5000-0106 684 GEN1 Expansion Card (Refurbished) ESI 5000-0106 684 GEN1 Expansion Card (Refurbished)

More Information: Provides an additional 6 CO lines, 8 digital stations, and 4 analog ports to an E-Class KSU.

Our Price: $345.00
ESI Communications 600 Server Base with Expansion Cabinet (Refurbished) ESI Communications 600 Server Base with Expansion Cabinet (Refurbished)

Key Features: ESI Communications Server w/ ESI 600 Base Cabinet and ESI 600/1000 Expansion Cabinet Mnfr. Par #: 500-0405 Cabinet Mnfr. Part #: 5000-0370 Expansion Cabinet The ESI 600 System for...

Our Price: $349.00
ESI Communications Server-100 MB Demo Unit (Refurbished) ESI Communications Server-100 MB Demo Unit (Refurbished)

Key Features: This is the cabinet from the Demo Kit (5000-0524) this is for used for demonstration purposes only and cannot be used as a phone system Condition: Refurbished

Our Price: $899.99
ESI Communications Server 100 Phone System KSU (Refurbished) ESI Communications Server 100 Phone System KSU (Refurbished)

Key Features: ESI-100 includes a built-in 612 port card and IVC hardware along with one expansion slot for another card Both digital and IP-based Standard-based design (including SIP support) ESI's Verbal...

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ESI Communications Server 200/600 IVC 24 R Intelligent VoIP Card (Refurbished) ESI Communications Server 200/600 IVC 24 R Intelligent VoIP Card (Refurbished)

Key Features: CS IVC (Intelligent VoIP Card) - Supports standards-compliant IP telephony service and features including VoIP to the desktop and ESI-Link Features highly configurable DSP technology that manages the flow...

Our Price: $239.00
ESI 5000-0655 Communications Server 200 Base Cabinet (Refurbished) ESI 5000-0655 Communications Server 200 Base Cabinet (Refurbished)

Key Features: ESI Communications Servers represent an innovative approach to digital and IP communications The science behind the switch is sophisticated in its simplicity: Design a platform with the flexibility to...

Our Price: $699.00
ESI 5000-0655 Communications Server 200 Base Cabinet With Upgraded 24-Port Voice Mail (Refurbished) ESI 5000-0655 Communications Server 200 Base Cabinet With Upgraded 24-Port Voice Mail (Refurbished)

Key Features: ESI Communications Servers represent an innovative approach to digital and IP communications. Ability to be configured as a purely IP-based communications system It is ideal for any business that...

Our Price: $699.00
ESI 5000-0433 Communications Server 200 Expansion Cabinet (Refurbished) ESI 5000-0433 Communications Server 200 Expansion Cabinet (Refurbished)

Key Features: The ESI-200’s Expansion Cabinet is unique to that model while the ESI-1000 and ESI-600 share the same Expansion Cabinet. Maximum Expansion Cabinets ESI-200 - 1 Expansion Cabinet ESI-600 -...

Our Price: $399.00
ESI 5000-0370 Communications Server 600/1000 Expansion Cabinet (Refurbished) ESI 5000-0370 Communications Server 600/1000 Expansion Cabinet (Refurbished)

Key Features: The ESI-1000 and ESI-600 share the same Expansion Cabinet Maximum Expansion Cabinets: ESI-200 - 1 Expansion Cabinet ESI-600 - 3 Expansion Cabinets ESI-1000 - 5 Expansion Cabinets Power Supply...

Our Price: $349.00
ESI 5000-0405 Communications Server 600 Base Cabinet (Refurbished) ESI 5000-0405 Communications Server 600 Base Cabinet (Refurbished)

Key Features: The ESI 600 System for Converged Communications can be a traditional digital business phone system a fully standards-based IP telephony system or any mix of the two Like other...

Our Price: $1,311.99
ESI PC 5000-0418 Communications Server 612 PC Card (Refurbished) ESI PC 5000-0418 Communications Server 612 PC Card (Refurbished)

Key Features: CS-612 - Provides circuits to connect up to six analog loop-start CO lines and 12 Digital Feature Phones Ground-start CO lines are not supported This card uses 12 stations...

Our Price: $199.00
ESI 5000-0419 Communications Server 684 PC Card (Refurbished) ESI 5000-0419 Communications Server 684 PC Card (Refurbished)

Key Features: Mnfr Part #: 5000-0419 CS 684 - Connects up to six analog loop-start CO lines eight Digital Feature Phones and four analog station ports The CO line ports support...

Our Price: $245.00
ESI 5000-0423 Communications Server 6ALC PC Analog Port Card (Refurbished) ESI 5000-0423 Communications Server 6ALC PC Analog Port Card (Refurbished)

Key Features: The CS-6ALC is similar to the CS-612 and E2-612,but connects only up to six analog loop-start CO lines(no stations). Compatible with: ESI-200 ESI-600 ESI-1000 Refurbished

Our Price: $269.00
ESI 5000-0425 Communications Server CS-A12 PC 12 Analog Station Card (Refurbished) ESI 5000-0425 Communications Server CS-A12 PC 12 Analog Station Card (Refurbished)

Key Features: Connects up to 12 analog devices (only) such as fax machines and cordless phones This card uses 12 station ports and no CO ports Each port provides a standard...

Our Price: $399.00
ESI 5000-0420 Communications Server D12 Port Station Card (Refurbished) ESI 5000-0420 Communications Server D12 Port Station Card (Refurbished)

Key Features: Only connects up to 12 Digital Feature Phones This card provides 12 Digital station ports and no CO ports. Compatible with: ESI Communication Server 200 ESI Communication Server 600...

Our Price: $129.00
ESI Communications Server DLC 82 PRI 23 Channel x 8 Digital x 2 Analog Card (5000-0498) ESI Communications Server DLC 82 PRI 23 Channel x 8 Digital x 2 Analog Card (5000-0498)

Key Features: Mfg Part# 5000-0498 CS-DLC82- (ESI-50 only)Provides an ISDN PRI interface supporting 23B (bearer) channels one D (datalink) channel eight digital stations and two analog devices. A jumper on this...

Our Price: $499.00
ESI 5000-0424 Communications Server DLC PC T1/PRI Card (Refurbished) ESI 5000-0424 Communications Server DLC PC T1/PRI Card (Refurbished)

Key Features: CS DLC PC - Provides either a T1 interface supporting 24 DS0 channels or an ISDN PRI interface supporting 23 B (bearer) channels and one D (datalink) channel. Compatible...

Our Price: $189.00
ESI Communications Server G2 HS 600 PC (Refurbished) ESI Communications Server G2 HS 600 PC (Refurbished)

Key Features: ESI Communications Server G2 HS 600 PC Refurbished

Our Price: $249.00
ESI 5000-0461 Communications Server CS IVC 12R12EL (Refurbished) ESI 5000-0461 Communications Server CS IVC 12R12EL (Refurbished)

Key Features: CS IVC (Intelligent VoIP Card) - Supports standards-compliant IP telephony service and features including VoIP to the desktop and ESI-Link It features highly configurable DSP technology that manages the...

Our Price: $300.00
ESI 5000-0456 Communications Server IVC 24 EL (Refurbished) ESI 5000-0456 Communications Server IVC 24 EL (Refurbished)

Key Features: CS IVC (Intelligent VoIP Card) - Supports standards-compliant IP telephony service and features including VoIP to the desktop and ESI-Link It features highly configurable DSP technology that manages the...

Our Price: $329.00
ESI 5000-0422 Communications Server DLC12 PC T1/PRI + 12 Station Card (Refurbished) ESI 5000-0422 Communications Server DLC12 PC T1/PRI + 12 Station Card (Refurbished)

Key Features: CS DLC 12 PC - Provides either a T1 interface supporting 24 DS0 channels or an ISDN PRI interface supporting 23 B (bearer) channels one D (datalink) channel and...

Our Price: $349.00
ESI 5000-0258 Expansion Cabinet (Refurbished) ESI 5000-0258 Expansion Cabinet (Refurbished)

Key Features: Refurbished Allows two additional expansion cards to be installed Compatible with: IVX IVX E-Class IVX S-Class IVX 128 IVX 128 Plus Communications Server 50 Communications Server 100

Our Price: $48.00
ESI 5010-0540 IVX 012 PC (Refurbished) ESI 5010-0540 IVX 012 PC (Refurbished)

Key Features: Mfr. Part #: 5010-0540 ESI IVX 012 PC Condition: Refurbished

Our Price: $169.00
ESI IVX 128 Digital Phone System with 612 Port Card (Refurbished) ESI IVX 128 Digital Phone System with 612 Port Card (Refurbished)

Key Features: IVX 128 (IVX stands for Integrated Voice Exchange while 128 indicates the system’s maximum number of call-processing ports) is an advanced business telecommunications system that includes not only phone...

Our Price: $399.00
ESI IVX 128 Expansion Cabinet (Refurbished) ESI IVX 128 Expansion Cabinet (Refurbished)

The ESI IVX Expansion Cabinet has two slots for circuit cards on the IVX 128 and IVX 128 Plus. One of these expansion cabinets may be added to the main cabinet....

Our Price: $149.00
ESI IVX 128 Main Base 2 ESI IVX 128 Main Base 2

The ESI IVX 128 Main Base 2 is for the IVX 128 and IVX 128 Plus telephone systems. This allows the addition of two more expansion cabinets (the Main cabinet allows...

Our Price: $449.00
ESI IVX 20 Phone System (Refurbished) ESI IVX 20 Phone System (Refurbished)

ESI IVX 20 Telephone System This comes carded ready for 4 Central Office telephone lines 8 phone stations and 6 ports of voicemail (6 hours storage and 8 mailboxes). This does...

Our Price: $1,395.00
ESI IVX 20 Plus Phone System (Refurbished) ESI IVX 20 Plus Phone System (Refurbished)

ESI IVX 20 Plus Telephone System Information: This comes carded ready for 4 Central Office telephone lines 8 phone stations and 6 ports of voicemail (6 hours storage and 8 mailboxes)....

Our Price: $599.00
ESI IVX 20 Plus Cabinet KSU (Refurbished) ESI IVX 20 Plus Cabinet KSU (Refurbished)

Key Features: ESI IVX 20 Plus Cabinet Hard Drive Model: MHR2010AT (PN: CA06062-B13200DX) Refurbished

Our Price: $279.00
ESI IVX 4x8 Expansion Card (Refurbished) ESI IVX 4x8 Expansion Card (Refurbished)

Key Features: ESI Original analog 4x8 expansion card Expands your IVX system by 4 Lines, 8 Stations Condition: Refurbished

Our Price: $79.00
ESI IVX 4x8 KSU (Refurbished) ESI IVX 4x8 KSU (Refurbished)

More Information: Condition: Refurbished

Our Price: $129.00
ESI IVX 56S S-Class Generation II Digital Phone System with NSP (Refurbished) ESI IVX 56S S-Class Generation II Digital Phone System with NSP (Refurbished)

Key Features: ESI S-Class Generation II All In One Digital Phone System ESI builds big-system features into the small-business IVX S-Class The patented IVX phone system design means all vital business...

Our Price: $499.00
ESI 5000-0294 Gen II IVX 482 S-Class 56S Expansion Card (Refurbished) ESI 5000-0294 Gen II IVX 482 S-Class 56S Expansion Card (Refurbished)

Key Features: ESI IVX S-Class Gen II 482 PC 4x8x2 Expansion Card For the 56S system (IVX 56s supports up to 16 phone lines up to 32 stations and up to...

Our Price: $395.00
ESI 5000-0104 IVX 612 (GEN 1) PC Card (Refurbished) ESI 5000-0104 IVX 612 (GEN 1) PC Card (Refurbished)

Key Features: Mnfr Part #: 5000-0104 ESI IVX128 612 Port Card Works with the X-Class (sleeve required) and E-Class Gen I & II Refurbished

Our Price: $99.00
ESI IVX 684 PC Card (Refurbished) ESI IVX 684 PC Card (Refurbished)

The IVX 128 6 X 8 X 4 expansion card provides ports for 6 C. O. Lines, 8 phone stations and 4 analog station ports.

Our Price: $249.00
ESI IVX 8x16 KSU (Refurbished) ESI IVX 8x16 KSU (Refurbished)

Key Features: Condition: Refurbished

Our Price: $189.00
ESI IVX A12 PC Card (Refurbished) ESI IVX A12 PC Card (Refurbished)

The A12 PC Card provides 12 analog station ports for devices such as single line phones faxes and modems. The A12 PC card operates on ESI IVX 128 128 Plus X...

Our Price: $199.00
ESI IVX C-Class Gen II All-In-One Digital Phone System with Power Supply (Refurbished) ESI IVX C-Class Gen II All-In-One Digital Phone System with Power Supply (Refurbished)

ESI IVX C-Class All-In-One Digital Phone System w/ Power Supply Key Features: Full integration With an IVX C-Class system just one compact cabinet does what other systems must combine multiple boxes...

Our Price: $229.00
ESI IVX C-Class Gen 2 360 Expansion Port Card 3x6x2 (Refurbished) ESI IVX C-Class Gen 2 360 Expansion Port Card 3x6x2 (Refurbished)

Key Features: ESI IVX C-Class Gen 2 360 Expansion Port Card 3x6x2 Adds 3 CO x 6 Digital Stations to an existing ESI IVX C Class Telephone System Refurbished

Our Price: $249.00
ESI IVX D12 PC Card (Refurbished) ESI IVX D12 PC Card (Refurbished)

ESI IVX D12PC card provides expansion for 12 digital phone station ports. The D12 PC card operates on ESI IVX 128 128 Plus X Class and E Class telephone systems. It...

Our Price: $445.00
ESI IVX DLC 12 PC Card (Refurbished) ESI IVX DLC 12 PC Card (Refurbished)

ESI DLC12 card provides expansion for 12 digital station ports and either a T-1 or PRI. On the IVX 128 it may only be configured as a T-1. On the IVX...

Our Price: $199.00
ESI IVX E2 684 Port Card (New) ESI IVX E2 684 Port Card (New)

Key Features: The IVX 128 6 X 8 X 4 expansion card provides ports for 6 C. O. Lines, 8 phone stations and 4 analog station ports Condition: New

Our Price: $449.00
ESI IVX E2 684 Port Card (Refurbished) ESI IVX E2 684 Port Card (Refurbished)

Key Features: The IVX 128 6 X 8 X 4 expansion card provides ports for 6 C. O. Lines, 8 phone stations and 4 analog station ports COndition: Refurbished

Our Price: $239.00
ESI IVX E2 D12 Digital Extension Port Card (Refurbished) ESI IVX E2 D12 Digital Extension Port Card (Refurbished)

Key Features: Mfr. Part #: IVX E2 D12 Adds 12 Digital Extensions Compatibility: ESI IVX E-Class Gen 1 ESI IVX E-Class Gen 2 ESI IVX X-Class ESI IVX C-Class ESI Communications...

Our Price: $219.00
ESI 5000-0348 IVX E2 DLC12 PC T1/PRI + 12 Station Card (Refurbished) ESI 5000-0348 IVX E2 DLC12 PC T1/PRI + 12 Station Card (Refurbished)

Key Features: E2 DLC 12 PC - Provides either a T1 interface supporting 24 DS0 channels or an ISDN PRI interface supporting 23 B (bearer) channels one D (datalink) channel and...

Our Price: $399.00
ESI IVX E2 Local Network Card (Refurbished) ESI IVX E2 Local Network Card (Refurbished)

Key Features: If equipped with an LNC the ESI system supports up to 12 ESI IP Feature Phones Each IP Feature Phone looks and works like a 48-Key Digital Feature Phone...

Our Price: $399.00
ESI IVX 20 Plus 2 X 4 X 2 Expansion Card (Refurbished) ESI IVX 20 Plus 2 X 4 X 2 Expansion Card (Refurbished)

This expansion card adds the capacity for 2 C. O. lines, 4 digital stations and 2 analog stations to the IVX 20 Plus telephone system.

Our Price: $245.00
ESI IVX E-Class Base Cabinet II (Refurbished) ESI IVX E-Class Base Cabinet II (Refurbished)

Key Features: To expand an IVX 128e system beyond Base Cabinet I (and its Expansion Cabinet) connect Base Cabinet II via ribbon cable to Base Cabinet I Base Cabinet II houses...

Our Price: $369.00
ESI IVX E-Class GEN II E2 612 Port Card (New) ESI IVX E-Class GEN II E2 612 Port Card (New)

Key Features: E2-612 Card - 6 lines x 12 digital Condition: New

Our Price: $499.00
ESI IVX E-Class GEN II E2 612 Port Card (Refurbished) ESI IVX E-Class GEN II E2 612 Port Card (Refurbished)

Key Features: ESI E-Class GEN II E2 612 Port Card Condition: Refurbished

Our Price: $191.00
ESI IVX E-Class Generation I Phone System 72e without NSP (Refurbished) ESI IVX E-Class Generation I Phone System 72e without NSP (Refurbished)

Key Features: 70 Hour Memory Module RS-232C DB9 serial port Built-in 33.6 Kbs modem for remote access External paging-device interface MOH interface Compatible Cards: 684 612 A12 D12 DLC12 Condition: Refurbished...

Our Price: $229.00
ESI IVX Classic Expansion Card, IVX PC Card (Refurbished) ESI IVX Classic Expansion Card, IVX PC Card (Refurbished)

The IVX PC Card requires an open card slot in the IVX Classic main cabinet or in an expansion cabinet. It allows for the addition of 4 phone lines and 8...

Our Price: $249.00
ESI IVX E-Class GEN II Phone System 72e Base Cabinet I without NSP (Refurbished) ESI IVX E-Class GEN II Phone System 72e Base Cabinet I without NSP (Refurbished)

Key Features: ESI IVX E-Class Generation II Phone System 70 Hour Memory Module RS-232C DB9 serial port Built-in 33.6 Kbs modem for remote access External paging-device interface MOH interface Compatible Cards:...

Our Price: $299.00
ESI IVX PC P-Card 4 Loop Start Lines by 8 Station Card (Refurbished) ESI IVX PC P-Card 4 Loop Start Lines by 8 Station Card (Refurbished)

Key Features: Port cards for the original IVX provide for configurations in multiples of 4 loop start lines by 8 stations Each port card has a standard female Amphenol connector for...

Our Price: $99.00
ESI IVX PC Local Network Card (Refurbished) ESI IVX PC Local Network Card (Refurbished)

Key Features: If equipped with an LNC the IVX ESI system supports up to 12 ESI IP Feature Phones Each IP Feature Phone looks and works like a 48-Key Digital Feature...

Our Price: $249.00
ESI IVX 128 Plus Digital Phone System with 612 Port Card (Refurbished) ESI IVX 128 Plus Digital Phone System with 612 Port Card (Refurbished)

Key Features: ESI IVX 128 PLUS Digital Phone System w/expansion & 612 Port Card installed Condition: Refurbished

Our Price: $360.00
ESI IVX E-Class Generation II Phone System 72e with NSP (Refurbished) ESI IVX E-Class Generation II Phone System 72e with NSP (Refurbished)

Key Features: 70 Hour Memory Module RS-232C DB9 serial port Built-in 33.6 Kbs modem for remote access External paging-device interface MOH interface Compatible Cards: 684 and E2-684 612 and E2-612 A12...

Our Price: $361.99
ESI IVX S-Class 42S Gen I PC 4x8x2 Card (Refurbished) ESI IVX S-Class 42S Gen I PC 4x8x2 Card (Refurbished)

Key Features: ESI IVX S-Class Gen I 482 PC 4x8 Card For the 42S system (The IVX 42s system tops out at 12 lines 24 stations and six analog ports (12...

Our Price: $199.00
ESI X-Class Card Mount (Refurbished) ESI X-Class Card Mount (Refurbished)

Key Features: This card is used to mount IVX cards into the X-Class system Condition: Refurbished

Our Price: $39.00
   
 

Shop From A Grand Variety Of ESI KSUs, Modules & Cards In Our Stock

ESI delivers high performance equipment of telecommunication systems. We provide you with ESI equipment to help improve performance. With our large selection ESI KSUs, modules, and phone cards you are sure to find equipment to fit your business systems needs.

Choose the features you need at completive prices. Let us deliver our high quality ESI equipment to you, by shopping with us. Use our drop down menu to sort through our products easily and seamlessly. If you have any questions regarding these products please request a live chat to chat with a representative or give us a call.