Standard Digital Features

Note: We recommend use of a Linux kernel version greater than 2.6.18 for PRI or ISDN use


PCI Card Mechanical Data

Size : 2.5” tall, 4.75 ” wide

Form Factor : Single PCI slot

Weight : 1 pound with all included components maximum

PCI Express Card Mechanical Data

Size : 2.5” tall, 4.75 ” wide

Form Factor : Single 1x PCI-e slot

Weight : 1 pound with all included components maximum

    All Rhino PCI T1 cards feature a single chip integrated CSU with both LIU and Framer, that is software controlled and software programmable

    •      Complete T1/DS1/ISDN-PRI/E1/J1 Transceiver Functionality
    •      T1/E1/J1 embedded CSU
    •      Long-Haul and Short-Haul Line Interface for Clock/Data Recovery and Wave shaping
    •      Crystal-Less Jitter Attenuator
    •      Fully Independent Transmit and Receive Functionality
    •      Single chip line interface unit (LIU) and Framer
    •      Rhino hardware echo cancellation (REC1) card ready
    •      Asterisk soft PBX tested and ready
    •      Zaptel/DAHDI compliant open source module source code included
    •      Line build-out software selectable
    •      Custom Rhino PCI interface chip means no wasted CPU overhead
    •      Fractional voice and data capable
    •      zttool and dahdi_tool compliant interface
    •      Field software upgradeable
    •      Alarm and Link status LEDs visible from the rear bracket
    •      5-year limited warranty
    •      Unlimited Hardware Support

    Digital Compatibility
    T1 coding and framing : 
    •      D4 or ESF
    •      AMI or B8ZS
    E1 coding and framing:
    •      D4 or HD3B
    •      CAS or CCS
    Line build-out selections: 
    •      0-133 feet or 0db
    •      133-266 feet
    •      266-399 feet 
    •      399-533 feet
    •      533-655 feet 
    •      -7.5db 
    •      -15db
    •      -22.5db
    Signaling protocols: 
    •      E&M 
    •      PRI
    •      Loop
    •     Ground
    •     Kewl

    Other features:

    •     Distinctive ring in Loop start mode
    •     Caller ID enabled in Loop start mode
    •     Loopback modes under software selection (zttool and dahdi_tool)
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    Rhino R4T1 Quad Port T1/E1/J1 PCI Plug-In Card

    Using Asterisk? Rhino Open Source Telephony PCI products allow you to utilize analog phones and wiring in conjunction with leading-edge Asterisk technology -- without having to buy expensive IP telephones. Why go IP when you can save on installations by using your existing wiring? With Rhino you can use lower cost analog phones with digital features and get guaranteed T1 voice quality, all while enjoying Asterisk VoIP technology for off-premise connectivity.

    Rhino offers the lowest T1 card prices on the market. We do not quote a low initial price and later sell you "more stuff" to get the job done. We will give you a low price on a solution that is complete and ready to mount, plug in and immediately begin use.


    The Rhino R4T1 card comes in a PCI and PCI-Express format. Both are available with optional modular

    Echo Cancellation (shown pictured)



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    For reseller pricing and quantity discounts please contact us at 877.RHINO.T1 (877-744-6681)

    Need a channel bank? Take a look at our·CB24 series!


    R4T1 Pricing

    List Pricing for the Rhino Quad Port T1 card (r4t1) - $1,399

    List Pricing for the Rhino Quad Port T1 card (r4t1) w EC - $1,998

    List Pricing for the Rhino Quad Port T1 card (r4t1) - PCI Express - $1,399

    List Pricing for the Rhino Quad Port T1 card (r4t1) - PCI Express w EC - $1,998


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