VC420D - 2 PCI E1

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Item Code: OP_86V50280P69E
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weight0.50 g
volume weight0.00 g


VC420D -2 PCI E1 VERSION (no echo cancellatiion)

VC420D is a 4 Ports Digital PCI analog card.

  • 1-4 E1/T1/J1 Digital Port
  • Providing E1/T1/J1 support in one card
  • Supporting Hardware HDLC.
  • For PCI-E Slot, Please Add 35 USD

Features and Benefits

The VC420D is a with 4 ports, selectable E1 (32-channel) or T1 (24-channel) card that supports all the functionality of the Digium quad T1/E1 card. This card supports both voice and data modes on its single span. For example, the card can support 12 channels dedicated to voice and 12 to data while passing all traffic through to the Asterisk PBX, which reliably routes the channels to their designated locations. This eliminates the need for an external router.

The VC420D can easily connect multiple PCs equipped with the card and achieve voice quality on par with single PBX implementations. Scalability for this product is derived from adding multiple cards to each individual PC. Add addition cards as you need them for your expanding applications.

The card supports industry standard telephony and data protocols, including both RBS and Primary Rate ISDN (PRI) protocol families for voice and PPP, Cisco HDLC, and Frame Relay data modes. The board drives both line-side and trunk-side interfaces, including call features.

The VC420Dprovides a wealth of line encoding (AMI / BSZS / HDB3), hardwareframe processing(CRC4 / non-CRC4 / ESF / D4T1 / E1). Every card provides two independent HDLC transceiver and support SS7 FISU transmit-receive. The card also provides two independent Jitter Attenuator.
The VC420Dreserved slot for echo cancellation. Carrier-grade EC modules have been provided. The EC module also can provide optimizing of voice quality.
The card provides 32bits transmission in both DMA slave and master mode. The data in every DMA transmission can be adjusted according to different motherboard to reach the maximum.
This series cards including 3 models.VC420D-1/VC420D-2/VCL120D-4,corresponding to 4 、2 、1 E1 / T1 / J1 interfaces.VC420D is 9.5 CM long, 10 CM high and compliance with PCI 2.2 standard interface card.ECmodule can be inserted to the slot on the card to provide hardware echo cancellation.

Hardware requirement
  • 500-Mhz Pentium III
  • 64MB RAM
  • 3.3V or 5V PCI 2.2 slot
  • Support Industry Standard: PCI 2.2
  • Hardware Echo Canceller Optional
  • Support for Asterisk®, Yate™, Call Weaver and FreeSwitch™ PBX
  • 1 E1/T1/J1 Port
  • 2 E1/T1/J1 Port
  • 4 E1/T1/J1 Port


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