Sidebar

Our Catalog

Availability

Price

$
to
$

Refurbished Business Phone Systems

Definity Cards

Filter
  • 10
  • 15
  • 20
  • 25
  • 30
  • 50
  • Featured
  • Best selling
  • Alphabetically, A-Z
  • Alphabetically, Z-A
  • Price, low to high
  • Price, high to low
  • Date, old to new
  • Date, new to old
Sort

Sort by:

  • Featured
  • Best selling
  • Alphabetically, A-Z
  • Alphabetically, Z-A
  • Price, low to high
  • Price, high to low
  • Date, old to new
  • Date, new to old
  • Avaya Definity TN567 Audix Multi-Function Board (Refurbished)
    Avaya Definity TN567 Audix Multi-Function Board (Refurbished)
    Key Features: Mfr. Part #: TN567 Audix Multi-Function Board
    $99.00
    $99.00
  • Avaya Definity TN556D ISDN-BRI 4-Wire S/T-NT 12-Port Interface (Refurbished)
    Avaya Definity TN556D ISDN-BRI 4-Wire S/T-NT 12-Port Interface (Refurbished)
    Avaya Definity TN556D ISDN-BRI 4-Wire S/T-NT Interface (12-Ports). More Information Provides 12-Ports connecting to ISDN-BRI terminals Each port has TXT, TXR, PXT, and PXR signal leads Up to 8 ports can be used for adjunct switch application interface (ASAI) links Each port operates at...
    $249.00
    $249.00
  • Avaya Definity TN556C ISDN-BRI 4-Wire Interface Card (Refurbished)
    Avaya Definity TN556C ISDN-BRI 4-Wire Interface Card (Refurbished)
    Key Features: Man. Part #: TN556C TN556C ISDN-BRI 4-Wire Interface Card Avaya Definity
    $99.00
    $99.00
  • Avaya Definity TN556B ISDN-BRI 4-Wire Interface (Refurbished)
    Avaya Definity TN556B ISDN-BRI 4-Wire Interface (Refurbished)
    Provides 12-ports connecting to ISDN-BRI terminals. Each port uses TXT, TXR, PXT, PXR signal leads and ranges up to 3300 feet maximum from the system to the voice terminal. Key Features: Mfr. Part #: TN556B Ports connection to ISDN-BRI terminals: 12 Signal leads: TXT,...
    $59.00
    $59.00
  • Avaya Definity TN553 Packet Data Line (Refurbished)
    Avaya Definity TN553 Packet Data Line (Refurbished)
    Key Features: Provides 12 ports that can connect through a cross-connect field to a TN726B circuit pack Provides software-administrable connections between the Switch Processing Element (SPE) and system access ports Connects to the packet bus and converts mode-2 protocol to mode-3 protocol connecting the...
    $79.00
    $79.00
  • Avaya Definity TN464HP DS1/ISDN PRI Interface (Refurbished)
    Avaya Definity TN464HP DS1/ISDN PRI Interface (Refurbished)
    Key Features: ISDN-PRI T1 or E1 connectivity Line-out (LO) and line-in (LI) signal leads for unpolarized, balanced pairs Support for CO, TIE, DID, and off-premises station (OPS) port types that use any of the following protocols: - robbed-bit signaling protocol, - proprietary bit-oriented signaling...
    $39.98
    $39.98
  • Avaya Definity TN464GP Universal DS1/PRI Interface (Refurbished)
    Avaya Definity TN464GP Universal DS1/PRI Interface (Refurbished)
    Avaya Definity TN464GP Universal DS1/PRI Interface. More Information Supports DS1 Rate (24 Digital Channels) and E1 Rate (32 Digital Channels) All versions support CO, TIE, DID and OPS (Off - Premises Stations) port types using the robbed signal protocol, proprietary bit-oriented signaling, (BOS) 24th...
    $37.00
    $37.00
  • Avaya Definity TN464D Universal DS1/ISDN Circuit Pack (Refurbished)
    Avaya Definity TN464D Universal DS1/ISDN Circuit Pack (Refurbished)
    Avaya Definity TN464D Universal DS1/ISDN Circuit Pack. More Information Supports DS1 Rate (24 Digital Channels) and E1 Rate (32 Digital Channels) All versions support CO, TIE, DID and OPS (Off - Premises Stations) port types using the robbed signal protocol, proprietary bit-oriented signaling, (BOS)...
    $49.00
    $49.00
  • Avaya Definity TN429D Direct Inward/Outward Dialing Card (Refurbished)
    Avaya Definity TN429D Direct Inward/Outward Dialing Card (Refurbished)
    Avaya Definity TN429D DIOD (Direct Inward/Outward Dialing) Card. More Information Provides 8 ports for direct inward/outward dialing (DIOD) trunks Each port provides a 2-wire interface to the central office (CO) public exchange for incoming and outgoing calls CO provides caller names and numbers to...
    $549.00
    $549.00
  • Avaya Definity TN420C Tone Detector Card (Refurbished)
    Avaya Definity TN420C Tone Detector Card (Refurbished)
    Avaya Definity TN420C Tone Detector Card. More Information Detects and analyzes tones on the Time Division Multiplexing (TDM) bus Provides two Network Processing Elements (NPEs) with eight channels that provide four Dual Tone Multi-Frequency (DTMF) receiver ports, two general purpose tone detector ports, and...
    $69.00
    $69.00
  • Avaya Definity TN2793B 24-Port Analog Circuit Pack (Refurbished)
    Avaya Definity TN2793B 24-Port Analog Circuit Pack (Refurbished)
    Key Features: Dual coded, 24-port analog line that performs all the functions of the TN746B, 16-port analog line circuit pack Each port supports 1 voice terminal such as 500 and 2500 terminals Supports on-premises wiring with either touch-tone or rotary dialing and with or...
    $118.88
    $118.88
  • Avaya Definity TN2793 24-Port Analog Circuit Pack (Refurbished)
    Avaya Definity TN2793 24-Port Analog Circuit Pack (Refurbished)
    Key Features: Dual coded, 24-port analog line that performs all the functions of the TN746B, 16-port analog line circuit pack Each port supports 1 voice terminal such as 500 and 2500 terminals Supports on-premises wiring with either touch-tone or rotary dialing and with or...
    $99.98
    $99.98
  • Avaya Definity TN2501AP Voice Announcements Over LAN (VAL) (Refurbished)
    Avaya Definity TN2501AP Voice Announcements Over LAN (VAL) (Refurbished)
    Key Features: Offers up to 1 hour of announcement storage capacity Provides shorter backup/restore times Plays announcements over the TDM bus and is firmware downloadable Provdes 33 ports: 1 dedicated telephone access port for recording and playing (port number 1 1 ethernet port (port...
    $84.98
    $84.98
  • Avaya Definity TN2464CP DS1 Interface Circuit Pack (Refurbished)
    Avaya Definity TN2464CP DS1 Interface Circuit Pack (Refurbished)
    Key Features: Supports DS1 Rate (24 Digital Channels) and E1 Rate (32 Digital Channels) All versions support CO, TIE, DID and OPS (Off - Premises Stations) port types using the robbed signal protocol, proprietary bit-oriented signaling, (BOS) 24th channel signaling protocol, and the DMI-BOS...
    $199.98
    $199.98
  • Avaya Definity TN2464BP DS1 Interface Circuit Pack (Refurbished)
    Avaya Definity TN2464BP DS1 Interface Circuit Pack (Refurbished)
    Key Features: Supports DS1 Rate (24 Digital Channels) and E1 Rate (32 Digital Channels) All versions support CO, TIE, DID and OPS (Off - Premises Stations) port types using the robbed signal protocol, proprietary bit-oriented signaling, (BOS) 24th channel signaling protocol, and the DMI-BOS...
    $50.00
    $50.00
  • Avaya Definity TN2464 DS1 Interface (Refurbished)
    Avaya Definity TN2464 DS1 Interface (Refurbished)
    Key Features: Supports T1 (24-channel) and E1 (32-channel) digital facilities In ISDN-PRI applications, the ISDN D-channel connects to a TN778 packet control and the TN765 packet processor interface (R8 or later si) or the TN1655 packet interface (R8r or later) via the LAN bus...
    $59.98
    $59.98
  • Avaya Definity TN2404 Processor Circuit Card (Refurbished)
    Avaya Definity TN2404 Processor Circuit Card (Refurbished)
    Key Features: Mfr. Part #: TN2404 In R9si systems, the TN2404 processor circuit pack replaces the TN790B Increased DRAM memory and flash memory for 16 to 32 Mb Designed to handle errors with the EM-BUS and must be used with the C-LAN (TN799) and...
    $78.99
    $78.99
  • Avaya Definity TN2404 Processor - R9si or Later (Refurbished)
    Avaya Definity TN2404 Processor - R9si or Later (Refurbished)
    Avaya Definity TN2404 Processor (R9si or later). More Information In R9si systems, the TN2404 processor circuit pack replaces the TN790B Increased DRAM memory and flash memory for 16 to 32 Mb Designed to handle errors with the EM-BUS and must be used with the...
    $240.00
    $240.00
  • Avaya Definity TN2402 Processor for CSI (Refurbished)
    Avaya Definity TN2402 Processor for CSI (Refurbished)
    Avaya Definity TN2402 Processor for csi. More Information Processor platform runs at 25 MHz Includes a 32-bit CPU complex and a maintenance processor complex providing serial communications and maintenance functions Terminates ISDN LAPD signaling over the TDM bus from PRI and BRI trunk circuit...
    $41.97
    $41.97
  • Avaya Definity TN2401 Net/Pkt Interface - R9si or later (Refurbished)
    Avaya Definity TN2401 Net/Pkt Interface - R9si or later (Refurbished)
    Avaya Definity TN2401 Net/Pkt Interface (R9si or later). More Information In R9si systems, the TN2401 Net/Pkt interface replaces the TN794 Provides the functionality of the TN777B network control interface (NETCON), the TN778 packet interface (PACCON, and, if BX.25 connectivity is not required, the TN765...
    $175.00
    $175.00

Recently Viewed Products